Double Star Calculator - Results


STF 1888 AB - Astrometric and kinematic properties
Gaia Source ID - Star A          : 1237090738916392704     Simbad
Gaia Source ID - Star B          : 1237090738916392832     Simbad
Observation Epoch : J2026.498 / 2026-07-02 Angular Separation : 4.968 ± 0.0014 arcsec Position Angle : 287.80 ± 0.0164 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 5.656 ± 0.0001 arcsec Position Angle : 302.08 ± 0.0011 degree Projected Separation : 38 au Spatial Separation : 1033 ± 1340 au Parallax Significance : 0.77 σ 3D Space Velocity Angle : 34.17 ± 0.18 degree ΔProper Motion Angle : 36.12 ± 0.06 degree ΔTotal Proper Motion : 91.92 ± 0.13 mas/yr ΔTangential Velocity : 2.94 ± 0.01 km/s ΔRadial Velocity : 0.72 ± 0.18 km/s ΔSpeed (scalar) : 3.01 ± 0.06 km/s ΔRelative Velocity (3D) : 4.59 ± 0.03 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 1237090738916392704           VizieR
Epoch : J2016.000 Right Ascension (RA) : 14h 51m 23.53s Declination (Dec) : 19° 06' 0.97" Distance : 6.75 ± 0.01 pc Distance : 22.03 ± 0.02 ly Magnitude (G-band) : 4.48 mag Absolute Magnitude : 5.33 ± <0.01 mag Stellar Extinction : 0.00 ± <0.01 mag Spectral Type (BP/RP) : G Bolometric correction : -0.10 mag Luminosity : 0.64 + 0.00 / − 0.00 L☉ Log(Luminosity) : -0.19508 Effective temperature (Teff) : 5386.08 + 8.87 / - 8.56 K Log(Teff) : 3.73127 Mass estimation : 0.93 M☉ RUWE : 1.10 Position Angle of Proper Motion : 107.65 ± 0.06 degree Total Proper Motion : 133.77 ± 0.13 mas/yr Tangential Velocity : 4.28 ± 0.01 km/s Radial Velocity (Gaia) : 1.59 ± 0.12 km/s Space Velocity : 4.57 ± 0.04 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.06
Radius from GSP-Phot Aeneas      :       0.85  ±   0.02          R☉
Spectral type from ESP-ELS       :          G
Radius of the star from FLAME    :       0.86  ±   0.02          R☉
Bolometric correction            :       0.05                    mag
Luminosity of the star (FLAME)   :       0.55  ±   0.01          L☉
Mass of the star from FLAME      :       0.90  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        212      Main Sequence (early)

Star A - Double Star Quality Metrics
Parallax over error :   1124.034 : very good
RUWE                :      1.100 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      4.480 : G > 3 mag, photometry reliable
Excess noise        :      0.871 : Good fit
  Significance      :   1169.090 :   Minor noise, likely negligible
BP-RP excess factor :      1.196 : photometry consistent
Visibility periods  :         14 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.015 : unobtrusive (single star source)


Star B - Stellar Data
Gaia Source ID                   : 1237090738916392832           VizieR
Epoch : J2016.000 Right Ascension (RA) : 14h 51m 23.19s Declination (Dec) : 19° 06' 3.97" Distance : 6.75 ± 0.00 pc Distance : 22.01 ± 0.01 ly Magnitude (G-band) : 6.43 mag Absolute Magnitude : 7.28 ± <0.01 mag Stellar Extinction : 0.00 ± <0.01 mag Spectral Type (BP/RP) : K Bolometric correction : -0.63 mag Luminosity : 0.17 + 0.00 / − 0.00 L☉ Log(Luminosity) : -0.76561 Effective temperature (Teff) : 4244.48 + 2.04 / - 1.93 K Log(Teff) : 3.62782 Mass estimation : 0.73 M☉ RUWE : 1.51 Position Angle of Proper Motion : 143.77 ± 0.01 degree Total Proper Motion : 225.69 ± 0.04 mas/yr Tangential Velocity : 7.22 ± 0.00 km/s Radial Velocity (Gaia) : 2.31 ± 0.13 km/s Space Velocity : 7.58 ± 0.04 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.09
Radius from GSP-Phot Aeneas      :       0.66  ±   0.00          R☉
Spectral type from ESP-ELS       :          K
Radius of the star from FLAME    :       0.66  ±   0.02          R☉
Bolometric correction            :      -0.31                    mag
Luminosity of the star (FLAME)   :       0.13  ±   0.01          L☉
FLAME quality indicators         :         20
  Quality                        :       Mass/Age not available
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        341      Main Sequence (mid)

Star B - Double Star Quality Metrics
Parallax over error :   2712.664 : very good
RUWE                :      1.510 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      6.430 : G > 3 mag, photometry reliable
Excess noise        :      0.217 : Good fit
  Significance      :     42.487 :   Minor noise, likely negligible
BP-RP excess factor :      1.271 : photometry consistent
Visibility periods  :         11 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.012 : unobtrusive (single star source)

Hertzsprung-Russell Diagram of the Double-Star
Positions of both components within the HRD, either derived from calculated luminosities and
effective temperatures (Teff) from the Gaia GSP-Phot Aeneas library (plotted as solid circles)
or estimated from the color index (bp_rp) measured by Gaia (plotted as open circles).


Double Star plausibility checks
Common Proper Motion

Classification acc. to Harshaw     :
===================================
rPM (Proper Motion Ratio)          :        0.63     (DPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.43     (Moderate)
COMOV: Distance Evidence Indicator :        1.00     (Strong)
Co-Moving Total Evidence Indicator :        0.66     (Moderate)

rPM/COMOV Agreement                :                 (Low)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :          38     au
Spatial Separation                 :        1033  ±     1340  au
  1-Sigma Range                    : [        38,       2374] au
  Significance                     :        0.77     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 76 au) : 1.1 % (2.0 * D-projected) P(D-3D <= 100 au) : 1.8 % (Close binary) P(D-3D <= 141 au) : 3.1 % (D-critical) P(D-3D <= 1000 au) : 33.9 % (Intermediate) P(D-3D <= 2500 au) : 82.2 % (Wide binary) P(D-3D <= 10000 au) : 100.0 % (Wide binary) P(D-3D <= 20000 au) : 100.0 % (Very wide binary) P(D-3D <= 50000 au) : 100.0 % (Extremely wide) P(D-3D <= 206265 au) : 100.0 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.63     (DPM)
ΔRelative Velocity (3D)            :        4.59  ±  0.03   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.01     (Unlikely)
WBS: Distance Evidence Indicator   :        1.00     (Strong)
Binarity Total Evidence Indicator  :        0.08     (Unlikely)


UWLE for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.83     (Strong)
WBS: Distance Evidence Indicator   :        1.00     (Strong)
Binarity Total Evidence Indicator  :        0.91     (Strong)

Orbital & Binding Dynamics         :
-----------------------------------
Est. orbital period at lower bound :      158.40            years
Escape Velocity                    :        8.80            km/s (Bound)
3D Velocity Difference             :        4.59  ±  0.03   km/s
Circular Orbital Velocity          :        6.22            km/s
Binding Indicator η                :        0.27     (Strongly Bound)
  η < 0.5 : Strongly bound / 0.5 ≤ η < 1.0: Bound / η ≥ 1.0 : Unbound

UWLE for Tight Binaries (2D) : =================================== TBS: Velocity Evidence Indicator : 0.83 (Strong) TBS: Distance Evidence Indicator : 1.00 (Strong) Binarity Total Evidence Indicator : 0.91 (Strong) Orbital & Binding Dynamics : ----------------------------------- Est. orbital period at lower bound : 158.40 years Escape Velocity : 8.80 km/s (Bound) 3D Velocity Difference : 4.59 ± 0.03 km/s Circular Orbital Velocity : 6.22 km/s Binding Indicator η : 0.27 (Strongly Bound) η < 0.5 : Strongly bound / 0.5 ≤ η < 1.0: Bound / η ≥ 1.0 : Unbound
UWLE Evidence Indicators - Parametrization:
===========================================
Mode                 Condition  s0         v0              Δx         Uncertainty
---------------------------------------------------------------------------------
Co-Moving                -         1.0 pc    5 km/s        spatial    σspatial
Wide Binaries (3D)       -      20,000 au  ∝√1/dspatial     spatial    σspatial
Wide Binaries (2D)   RI < 3.0   20,000 au  ∝√1/dprojected   projected  σspatial
Tight Binaries (2D)  RI < 3.0    1,000 au  ∝√1/dprojected   projected  σprojected

Metallicity (Experimental / Not validated)

Metallicity (Gaia DR3, GSP-Phot)   :
===================================
Metallicity Star A - [M/H]         :     -0.0427  ± 0.1198 dex
  Metallicity reliability factor A :        0.95
Metallicity Star B - [M/H]         :      0.1444  ± 0.0117 dex
  Metallicity reliability factor B :        1.00
Metallicity Difference             :      0.1871           dex
Combined uncertainty               :      0.2421           dex
Sigma-Distance (Z-Score)           :      0.77 σ
  Compatibility                    :  Consistent (good agreement)

Note: Z-Score calculation accounts for a 0.21 dex systematic uncertainty
      floor based on Gaia DR3 GSP-Phot validation studies

-- Experimental module – results are preliminary and not validated --

RUWE parameters
RUWE probability for a binary system (Star A) :  1.10 : Zero
RUWE probability for a binary system (Star B) :  1.51 : Medium

Separation and position angle as a function of Julian Epoch
Note: Separation and position angle for different epochs are derived solely
from Gaia proper motion measurements; possible orbital motion is not considered.

-- For epoch J[1900-2100], computed using Gaia proper motions --

Click to expand/collapse - Separation and Position Angle for J-Epoch:
Epoch      Sep[″]   e_Sep[″]    PA[°]     e_PA[°]
-------------------------------------------------
1900.0     20.175    0.016     344.246    0.044
1901.0     20.037    0.016     344.152    0.044
1902.0     19.899    0.016     344.057    0.044
1903.0     19.762    0.015     343.961    0.043
1904.0     19.624    0.015     343.864    0.043
1905.0     19.487    0.015     343.765    0.043
1906.0     19.349    0.015     343.664    0.043
1907.0     19.212    0.015     343.562    0.043
1908.0     19.074    0.015     343.459    0.043
1909.0     18.937    0.015     343.354    0.043
1910.0     18.800    0.014     343.248    0.043
1911.0     18.663    0.014     343.140    0.043
1912.0     18.526    0.014     343.031    0.043
1913.0     18.389    0.014     342.920    0.043
1914.0     18.252    0.014     342.807    0.042
1915.0     18.115    0.014     342.693    0.042
1916.0     17.978    0.014     342.577    0.042
1917.0     17.841    0.014     342.459    0.042
1918.0     17.705    0.013     342.339    0.042
1919.0     17.568    0.013     342.217    0.042
1920.0     17.432    0.013     342.094    0.042
1921.0     17.295    0.013     341.968    0.042
1922.0     17.159    0.013     341.841    0.042
1923.0     17.023    0.013     341.711    0.042
1924.0     16.886    0.013     341.579    0.041
1925.0     16.750    0.012     341.446    0.041
1926.0     16.614    0.012     341.310    0.041
1927.0     16.479    0.012     341.172    0.041
1928.0     16.343    0.012     341.031    0.041
1929.0     16.207    0.012     340.888    0.041
1930.0     16.072    0.012     340.743    0.041
1931.0     15.936    0.012     340.595    0.041
1932.0     15.801    0.011     340.445    0.040
1933.0     15.665    0.011     340.292    0.040
1934.0     15.530    0.011     340.137    0.040
1935.0     15.395    0.011     339.978    0.040
1936.0     15.260    0.011     339.817    0.040
1937.0     15.126    0.011     339.653    0.040
1938.0     14.991    0.011     339.487    0.040
1939.0     14.856    0.011     339.317    0.039
1940.0     14.722    0.010     339.144    0.039
1941.0     14.588    0.010     338.968    0.039
1942.0     14.454    0.010     338.788    0.039
1943.0     14.320    0.010     338.605    0.039
1944.0     14.186    0.010     338.419    0.039
1945.0     14.052    0.010     338.229    0.038
1946.0     13.919    0.010     338.036    0.038
1947.0     13.785    0.009     337.839    0.038
1948.0     13.652    0.009     337.638    0.038
1949.0     13.519    0.009     337.433    0.038
1950.0     13.386    0.009     337.223    0.038
1951.0     13.254    0.009     337.010    0.037
1952.0     13.121    0.009     336.793    0.037
1953.0     12.989    0.009     336.571    0.037
1954.0     12.857    0.008     336.344    0.037
1955.0     12.725    0.008     336.113    0.037
1956.0     12.593    0.008     335.877    0.036
1957.0     12.462    0.008     335.636    0.036
1958.0     12.331    0.008     335.389    0.036
1959.0     12.200    0.008     335.138    0.036
1960.0     12.069    0.008     334.881    0.035
1961.0     11.938    0.007     334.618    0.035
1962.0     11.808    0.007     334.350    0.035
1963.0     11.678    0.007     334.076    0.035
1964.0     11.549    0.007     333.795    0.034
1965.0     11.419    0.007     333.508    0.034
1966.0     11.290    0.007     333.215    0.034
1967.0     11.161    0.007     332.914    0.033
1968.0     11.033    0.007     332.607    0.033
1969.0     10.905    0.006     332.293    0.033
1970.0     10.777    0.006     331.971    0.033
1971.0     10.649    0.006     331.641    0.032
1972.0     10.522    0.006     331.303    0.032
1973.0     10.395    0.006     330.957    0.032
1974.0     10.269    0.006     330.603    0.031
1975.0     10.143    0.006     330.240    0.031
1976.0     10.017    0.005     329.867    0.030
1977.0      9.892    0.005     329.486    0.030
1978.0      9.768    0.005     329.094    0.030
1979.0      9.643    0.005     328.692    0.029
1980.0      9.520    0.005     328.280    0.029
1981.0      9.397    0.005     327.857    0.028
1982.0      9.274    0.005     327.423    0.028
1983.0      9.152    0.004     326.977    0.028
1984.0      9.030    0.004     326.519    0.027
1985.0      8.909    0.004     326.049    0.027
1986.0      8.789    0.004     325.566    0.026
1987.0      8.669    0.004     325.069    0.026
1988.0      8.550    0.004     324.559    0.025
1989.0      8.432    0.004     324.034    0.025
1990.0      8.314    0.004     323.494    0.024
1991.0      8.197    0.003     322.939    0.023
1992.0      8.081    0.003     322.368    0.023
1993.0      7.966    0.003     321.780    0.022
1994.0      7.852    0.003     321.175    0.021
1995.0      7.738    0.003     320.553    0.021
1996.0      7.626    0.003     319.911    0.020
1997.0      7.514    0.003     319.251    0.019
1998.0      7.403    0.002     318.571    0.019
1999.0      7.294    0.002     317.870    0.018
2000.0      7.186    0.002     317.148    0.017
2001.0      7.079    0.002     316.405    0.016
2002.0      6.973    0.002     315.638    0.015
2003.0      6.868    0.002     314.848    0.015
2004.0      6.765    0.002     314.033    0.014
2005.0      6.663    0.001     313.194    0.013
2006.0      6.562    0.001     312.329    0.012
2007.0      6.464    0.001     311.437    0.011
2008.0      6.366    0.001     310.517    0.010
2009.0      6.271    0.001     309.569    0.009
2010.0      6.177    0.001     308.593    0.008
2011.0      6.085    0.001     307.586    0.006
2012.0      5.995    0.001     306.549    0.005
2013.0      5.907    0.000     305.480    0.004
2014.0      5.821    0.000     304.380    0.003
2015.0      5.738    0.000     303.247    0.002
2016.0      5.656    0.000     302.081    0.001
2017.0      5.577    0.000     300.882    0.002
2018.0      5.501    0.000     299.648    0.003
2019.0      5.427    0.000     298.381    0.004
2020.0      5.356    0.001     297.079    0.006
2021.0      5.288    0.001     295.743    0.007
2022.0      5.222    0.001     294.373    0.009
2023.0      5.160    0.001     292.969    0.011
2024.0      5.101    0.001     291.531    0.012
2025.0      5.045    0.001     290.061    0.014
2026.0      4.993    0.001     288.559    0.016
2027.0      4.944    0.001     287.026    0.017
2028.0      4.899    0.002     285.464    0.019
2029.0      4.857    0.002     283.874    0.021
2030.0      4.820    0.002     282.257    0.023
2031.0      4.786    0.002     280.617    0.024
2032.0      4.756    0.002     278.954    0.026
2033.0      4.730    0.002     277.272    0.028
2034.0      4.708    0.002     275.573    0.030
2035.0      4.691    0.003     273.860    0.032
2036.0      4.678    0.003     272.135    0.033
2037.0      4.669    0.003     270.403    0.035
2038.0      4.664    0.003     268.665    0.037
2039.0      4.663    0.003     266.925    0.038
2040.0      4.667    0.003     265.186    0.040
2041.0      4.675    0.003     263.452    0.042
2042.0      4.688    0.003     261.725    0.043
2043.0      4.704    0.004     260.009    0.045
2044.0      4.725    0.004     258.307    0.046
2045.0      4.750    0.004     256.621    0.047
2046.0      4.779    0.004     254.954    0.049
2047.0      4.812    0.004     253.309    0.050
2048.0      4.849    0.004     251.687    0.051
2049.0      4.890    0.004     250.091    0.052
2050.0      4.934    0.005     248.523    0.053
2051.0      4.982    0.005     246.984    0.054
2052.0      5.034    0.005     245.475    0.055
2053.0      5.089    0.005     243.998    0.056
2054.0      5.147    0.005     242.553    0.057
2055.0      5.209    0.005     241.142    0.058
2056.0      5.274    0.005     239.765    0.059
2057.0      5.341    0.005     238.421    0.059
2058.0      5.412    0.006     237.112    0.060
2059.0      5.485    0.006     235.837    0.060
2060.0      5.561    0.006     234.597    0.061
2061.0      5.639    0.006     233.390    0.061
2062.0      5.720    0.006     232.217    0.062
2063.0      5.803    0.006     231.077    0.062
2064.0      5.889    0.006     229.970    0.063
2065.0      5.976    0.007     228.895    0.063
2066.0      6.066    0.007     227.851    0.063
2067.0      6.157    0.007     226.838    0.064
2068.0      6.251    0.007     225.855    0.064
2069.0      6.346    0.007     224.901    0.064
2070.0      6.443    0.007     223.975    0.064
2071.0      6.541    0.007     223.078    0.065
2072.0      6.641    0.008     222.207    0.065
2073.0      6.743    0.008     221.362    0.065
2074.0      6.846    0.008     220.542    0.065
2075.0      6.950    0.008     219.747    0.065
2076.0      7.056    0.008     218.975    0.065
2077.0      7.163    0.008     218.227    0.065
2078.0      7.271    0.008     217.500    0.065
2079.0      7.380    0.009     216.795    0.065
2080.0      7.490    0.009     216.111    0.065
2081.0      7.602    0.009     215.446    0.065
2082.0      7.714    0.009     214.801    0.065
2083.0      7.827    0.009     214.174    0.065
2084.0      7.941    0.009     213.566    0.065
2085.0      8.057    0.009     212.974    0.065
2086.0      8.172    0.010     212.400    0.065
2087.0      8.289    0.010     211.841    0.065
2088.0      8.407    0.010     211.298    0.065
2089.0      8.525    0.010     210.770    0.065
2090.0      8.644    0.010     210.257    0.065
2091.0      8.763    0.010     209.757    0.065
2092.0      8.883    0.010     209.271    0.065
2093.0      9.004    0.010     208.798    0.065
2094.0      9.126    0.011     208.338    0.065
2095.0      9.248    0.011     207.889    0.065
2096.0      9.370    0.011     207.453    0.065
2097.0      9.493    0.011     207.027    0.065
2098.0      9.617    0.011     206.613    0.065
2099.0      9.741    0.011     206.209    0.065
2100.0      9.866    0.011     205.815    0.065




Measurements for STF 1888 AB
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
14514+1906  STF 1888    AB    1    5.14"    293.8°   B2022.483  HWI  120/900 APO   ASI120MC 
14514+1906  STF 1888    AB    1    5.06"    291.3°   B2023.305  HWI  120/900 APO   ASI120MC
14514+1906  STF 1888    AB    1    4.91"    291.5°   B2024.356  HWI  120/900 APO   ASI120MC

14514+1906  STF 1888    AB    3    4.76"    288.4°   B2025.325  HWI  120/900 APO   ASI678MM  AD
*14514+1906 STF 1888    AB    1    4.76"    288.6°   B2025.325  HWI  120/900 APO   ASI678MM  AD
*14514+1906 STF 1888    AB    1    4.74"    288.4°   B2025.325  HWI  120/900 APO   ASI678MM  AD
*14514+1906 STF 1888    AB    1    4.78"    288.2°   B2025.325  HWI  120/900 APO   ASI678MM  AD 

14514+1906  STF 1888    AB    1    4.85"    288.4°   B2025.468  HWI  120/900 APO   ASI678MM
14514+1906  STF 1888    AB    5    4.73"    286.16°  B2026.483  HWI  120/900 APO   ASI678MM


AD - Measurement accuracy affected by atmospheric dispersion


B2026.483
=========
#    Sep      PA             #    Sep      PA
---------------------        ------------------------------------------
1    4.698    286.032        6    4.74     286.79    Not sharp/Not used
2    4.761    286.345        7    4.81     285.57    Not sharp/Not used 
3    4.765    286.099        8    4.77     285.89    Not sharp/Not used
4    4.717    286.423        9    4.75     286.10    Not sharp/Not used
5    4.703    285.889        10   4.77     286.21    Not sharp/Not used
--------------------         ------------------------------------------
AV   4.73     286.16         AV   4.77     286.11    NOT USED
====================         ====================


Epoch      2025    2026      Meas     Dev(2025)    Dev(2026)
------------------------------------------------------------
2022.50    5.129    5.040    5.14"    0.011"       0.1"
2023.00    5.085    4.994             
2023.50    5.041    4.949    5.06"    0.019"       0.111"
2024.00    4.996    4.903             
2024.50    4.952    4.856              
2025.00    4.907    4.810              
2025.50    4.861    4.763    4.85"    -0.011"      0.087"
2026.00    4.816    4.716              
2026.50    4.770    4.669    4.73"    -0.04"       0.061"


Epoch      2025    2026       Meas               Elements 2026        Measurements
------------------------------------------------------------------
2022.50    5.129   293.59       5.040   292.95       5.14"    293.8° 
2023.00    5.085   292.86       4.994   292.20       
2023.50    5.041   292.12       4.949   291.43       5.06"    291.3°
2024.00    4.996   291.37       4.903   290.65       
2024.50    4.952   290.60       4.856   289.85       
2025.00    4.907   289.82       4.810   289.04       
2025.50    4.861   289.03       4.763   288.21       4.85"    288.4°
2026.00    4.816   288.22       4.716   287.36       
2026.50    4.770   287.39       4.669   286.50       4.73"    286.16°

-- Image of STF-1888-AB-taken with Equinox 120/900 APO --


WDS record for STF 1888 AB
wds_id                       : 14514+1906
discoverer_code              : STF
discoverer_number            : 1888
discoverer_components        : AB
date_first                   : 1780
date_last                    : 2023
num_of_obs                   : 1473
pa_first                     : 24
pa_last                      : 292
sep_first                    : 3.4
sep_last                     : 5.0
mag_primary                  : 4.76
mag_secondary                : 6.95
spectral_type                : G8V+K5V
primary_proper_motion_RA     : 153
primary_proper_motion_DEC    : -72
secondary_proper_motion_RA   : 90
secondary_proper_motion_DEC  : -147
dm_number                    : +19 2870
notes                        : NO
precise_coordinate           : 145123.38+190601.7
                             : 14:51:23.38 +19:06:01.7

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
O: Orbit described in WDSNOT MEMO and has entry in Orbit Catalog


Orbital Elements for STF 1888 AB
WDS: STF 1888 AB WDS ID/Discoverer
P: 151.870 Orbital period (years)
a: 4.92219 Semi-major axis (arcseconds)
i: 140.2816 Inclination (degrees)
Ω: 167.9575 Longitude of ascending node (degrees)
T: 1909.377 Epoch of periastron passage (year)
e: 0.51168 Eccentricity
ω: 23.8399 Argument of periastron (degrees)
Start-Year: 1949.065 Year
End-Year: 2100.935 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF 1888 AB
Position: 145123.38+190601.7 Epoch-2000 right ascension and declination
WDS-ID: 14514+1906 WDS designation
Discoverer Code: STF 1888 AB Discover designation and components
ADS number: 9413 Aitken Double Star catalog
HD number: 131156 HD catalog number
Hipparcos number: 72659 Hipparcos catalog number
V1: 4.76 Magnitude of the primary
V2: 6.95 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 2 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
8 = Interferometric
9 = Astrometric
Flags: n Flags
Ephemerides: Ephemerides
Code: Kpp2020f Reference

Double Star Orbit for STF 1888 AB



WDS 6th Orbit including measures of STF 1888 AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of STF 1888 AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.669   286.50
--------------------------
1949.00    6.098   357.92
1950.00    6.180   356.92
1951.00    6.260   355.94
1952.00    6.336   354.98
1953.00    6.408   354.04
1954.00    6.478   353.13
1955.00    6.544   352.23
1956.00    6.607   351.36
1957.00    6.667   350.50
1958.00    6.723   349.65
1959.00    6.777   348.82
1960.00    6.828   348.00
1961.00    6.876   347.19
1962.00    6.920   346.39
1963.00    6.962   345.60
1964.00    7.001   344.82
1965.00    7.037   344.05
1966.00    7.070   343.29
1967.00    7.100   342.53
1968.00    7.128   341.78
1969.00    7.153   341.04
1970.00    7.175   340.30
1971.00    7.194   339.56
1972.00    7.211   338.83
1973.00    7.225   338.10
1974.00    7.236   337.38
1975.00    7.245   336.65
1976.00    7.251   335.93
1977.00    7.255   335.21
1978.00    7.256   334.49
1979.00    7.254   333.77
1980.00    7.250   333.05
1981.00    7.244   332.32
1982.00    7.235   331.60
1983.00    7.224   330.87
1984.00    7.210   330.15
1985.00    7.194   329.41
1986.00    7.175   328.68
1987.00    7.154   327.94
1988.00    7.131   327.20
1989.00    7.106   326.45
1990.00    7.078   325.69
1991.00    7.047   324.93
1992.00    7.015   324.16
1993.00    6.980   323.39
1994.00    6.943   322.60
1995.00    6.904   321.81
1996.00    6.863   321.01
1997.00    6.819   320.20
1998.00    6.773   319.38
1999.00    6.725   318.55
2000.00    6.675   317.70
2001.00    6.623   316.84
2002.00    6.569   315.97
2003.00    6.512   315.08
2004.00    6.454   314.18
2005.00    6.393   313.26
2006.00    6.331   312.32
2007.00    6.266   311.36
2008.00    6.200   310.39
2009.00    6.131   309.39
2010.00    6.061   308.37
2011.00    5.989   307.32
2012.00    5.915   306.25
2013.00    5.839   305.15
2014.00    5.762   304.02
2015.00    5.682   302.87
2016.00    5.602   301.67
2017.00    5.519   300.45
2018.00    5.435   299.18
2019.00    5.350   297.87
2020.00    5.263   296.53
2021.00    5.174   295.13
2022.00    5.085   293.69
2023.00    4.994   292.20
2024.00    4.903   290.65
2025.00    4.810   289.04
2026.00    4.716   287.36
2027.00    4.622   285.62
2028.00    4.527   283.81
2029.00    4.432   281.92
2030.00    4.337   279.94
2031.00    4.242   277.88
2032.00    4.147   275.72
2033.00    4.052   273.46
2034.00    3.958   271.10
2035.00    3.865   268.61
2036.00    3.773   266.01
2037.00    3.683   263.28
2038.00    3.594   260.41
2039.00    3.508   257.40
2040.00    3.425   254.24
2041.00    3.344   250.93
2042.00    3.267   247.45
2043.00    3.194   243.81
2044.00    3.124   240.01
2045.00    3.059   236.04
2046.00    2.998   231.90
2047.00    2.942   227.59
2048.00    2.891   223.13
2049.00    2.843   218.51
2050.00    2.800   213.74
2051.00    2.761   208.83
2052.00    2.724   203.78
2053.00    2.688   198.60
2054.00    2.654   193.28
2055.00    2.618   187.82
2056.00    2.580   182.20
2057.00    2.539   176.41
2058.00    2.494   170.42
2059.00    2.445   164.19
2060.00    2.392   157.71
2061.00    2.336   150.91
2062.00    2.280   143.79
2063.00    2.229   136.31
2064.00    2.185   128.51
2065.00    2.154   120.44
2066.00    2.139   112.19
2067.00    2.144   103.90
2068.00    2.171    95.73
2069.00    2.219    87.83
2070.00    2.288    80.35
2071.00    2.377    73.36
2072.00    2.481    66.92
2073.00    2.599    61.03
2074.00    2.727    55.67
2075.00    2.863    50.80
2076.00    3.005    46.39
2077.00    3.151    42.38
2078.00    3.299    38.73
2079.00    3.448    35.39
2080.00    3.597    32.33
2081.00    3.746    29.51
2082.00    3.893    26.91
2083.00    4.039    24.50
2084.00    4.181    22.25
2085.00    4.322    20.15
2086.00    4.459    18.18
2087.00    4.593    16.33
2088.00    4.724    14.58
2089.00    4.852    12.92
2090.00    4.976    11.35
2091.00    5.097     9.86
2092.00    5.214     8.43
2093.00    5.327     7.06
2094.00    5.437     5.75
2095.00    5.544     4.49
2096.00    5.647     3.28
2097.00    5.746     2.11
2098.00    5.842     0.98
2099.00    5.934   359.88
2100.00    6.023   358.82
2101.00    6.109   357.79


Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1237090738916392704
source_id = 1237090738916392704
random_index = 617701831
ref_epoch = 2016.0
ra = 222.8480514738455
ra_error = 0.087588266
dec = 19.100269640072455
dec_error = 0.11655944
parallax = 148.06949945238355
parallax_error = 0.13173045
parallax_over_error = 1124.0339
pm = 133.76799
pmra = 127.46787577668219
pmra_error = 0.12581071
pmdec = -40.568645496944214
pmdec_error = 0.12948832
ra_dec_corr = -0.15071559
ra_parallax_corr = -0.037514754
ra_pmra_corr = 0.071361795
ra_pmdec_corr = -0.23937874
dec_parallax_corr = -0.3291232
dec_pmra_corr = -0.3174845
dec_pmdec_corr = 0.27168384
parallax_pmra_corr = 0.22655383
parallax_pmdec_corr = -0.1634044
pmra_pmdec_corr = -0.047150988
astrometric_n_obs_al = 191
astrometric_n_obs_ac = 191
astrometric_n_good_obs_al = 184
astrometric_n_bad_obs_al = 7
astrometric_gof_al = 1.8820353
astrometric_chi2_al = 22090.326
astrometric_excess_noise = 0.8707373
astrometric_excess_noise_sig = 1169.0902
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.5399121
astrometric_matched_transits = 22
visibility_periods_used = 14
astrometric_sigma5d_max = 0.19354253
matched_transits = 22
new_matched_transits = 10
matched_transits_removed = 5
ipd_gof_harmonic_amplitude = 0.015252595
ipd_gof_harmonic_phase = 70.01927
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.0991775
duplicated_source = false
phot_g_n_obs = 168
phot_g_mean_flux = 303916134.62313545
phot_g_mean_flux_error = 358205.4
phot_g_mean_flux_over_error = 848.4409
phot_g_mean_mag = 4.4804826
phot_bp_n_obs = 22
phot_bp_mean_flux = 154027372.67674315
phot_bp_mean_flux_error = 358164.28
phot_bp_mean_flux_over_error = 430.04672
phot_bp_mean_mag = 4.8695474
phot_rp_n_obs = 22
phot_rp_mean_flux = 209596404.0976573
phot_rp_mean_flux_error = 534694.6
phot_rp_mean_flux_over_error = 391.99274
phot_rp_mean_mag = 3.9444358
phot_bp_rp_excess_factor = 1.196461
phot_bp_n_contaminated_transits = 1
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 1
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = 0.92511153
bp_g = 0.3890648
g_rp = 0.53604674
radial_velocity = 1.5923321
radial_velocity_error = 0.124338284
rv_method_used = 1
rv_nb_transits = 13
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 11
rv_expected_sig_to_noise = 1346.872
rv_chisq_pvalue = 0.5318909
rv_time_duration = 853.56116
rv_amplitude_robust = 0.5902978
rv_template_teff = 5500.0
rv_template_logg = 5.0
rv_template_fe_h = -0.25
rv_atm_param_origin = 444
vbroad = 6.2165513
vbroad_error = 1.1778948
vbroad_nb_transits = 11
grvs_mag = 3.7619736
grvs_mag_error = 0.007079245
grvs_mag_nb_transits = 13
phot_variable_flag = NOT_AVAILABLE
l = 23.085938824194358
b = 61.35566378245869
ecl_lon = 213.55036231077804
ecl_lat = 33.768535838250145
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 0
has_xp_continuous = false
has_xp_sampled = false
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = true
has_mcmc_msc = false
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.0819808e-13
classprob_dsc_combmod_galaxy = 5.4044394e-13
classprob_dsc_combmod_star = 0.9993886
teff_gspphot = 5386.0786
teff_gspphot_lower = 5377.5137
teff_gspphot_upper = 5394.945
logg_gspphot = 4.4925
logg_gspphot_lower = 4.4816
logg_gspphot_upper = 4.5076
mh_gspphot = -0.0427
mh_gspphot_lower = -0.1059
mh_gspphot_upper = 0.1338
distance_gspphot = 6.7505
distance_gspphot_lower = 6.7046
distance_gspphot_upper = 7.0924
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0008
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0007
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0004
libname_gspphot = MARCS
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1237090738916392832
source_id = 1237090738916392832
random_index = 1677919691
ref_epoch = 2016.0
ra = 222.8466426652314
ra_error = 0.023990432
dec = 19.101104107947574
dec_error = 0.041207254
parallax = 148.17931678941665
parallax_error = 0.054625016
parallax_over_error = 2712.664
pm = 225.68721
pmra = 133.37604517724114
pmra_error = 0.041277938
pmdec = -182.0591844077652
pmdec_error = 0.045075502
ra_dec_corr = -0.16492383
ra_parallax_corr = 0.15513408
ra_pmra_corr = 0.18133436
ra_pmdec_corr = 0.19919366
dec_parallax_corr = -0.6621759
dec_pmra_corr = -0.23474391
dec_pmdec_corr = -0.28984773
parallax_pmra_corr = 0.43534228
parallax_pmdec_corr = 0.2531175
pmra_pmdec_corr = 0.34717172
astrometric_n_obs_al = 174
astrometric_n_obs_ac = 174
astrometric_n_good_obs_al = 171
astrometric_n_bad_obs_al = 3
astrometric_gof_al = 8.677709
astrometric_chi2_al = 1132.1138
astrometric_excess_noise = 0.21679328
astrometric_excess_noise_sig = 42.486767
astrometric_params_solved = 31
astrometric_primary_flag = true
nu_eff_used_in_astrometry = 1.4220431
astrometric_matched_transits = 20
visibility_periods_used = 11
astrometric_sigma5d_max = 0.07466299
matched_transits = 21
new_matched_transits = 11
matched_transits_removed = 7
ipd_gof_harmonic_amplitude = 0.012327977
ipd_gof_harmonic_phase = 66.0582
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.5099552
duplicated_source = false
phot_g_n_obs = 173
phot_g_mean_flux = 50455685.21886825
phot_g_mean_flux_error = 14206.615
phot_g_mean_flux_over_error = 3551.5627
phot_g_mean_mag = 6.4300914
phot_bp_n_obs = 15
phot_bp_mean_flux = 19152085.694207128
phot_bp_mean_flux_error = 27792.582
phot_bp_mean_flux_over_error = 689.10785
phot_bp_mean_mag = 7.133002
phot_rp_n_obs = 14
phot_rp_mean_flux = 44989353.593097635
phot_rp_mean_flux_error = 76125.02
phot_rp_mean_flux_over_error = 590.993
phot_rp_mean_mag = 5.615121
phot_bp_rp_excess_factor = 1.2712431
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = 1.5178809
bp_g = 0.7029104
g_rp = 0.8149705
radial_velocity = 2.3123786
radial_velocity_error = 0.12521172
rv_method_used = 1
rv_nb_transits = 12
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 10
rv_expected_sig_to_noise = 643.2911
rv_chisq_pvalue = 0.58009607
rv_time_duration = 733.2432
rv_amplitude_robust = 0.50008655
rv_template_teff = 5500.0
rv_template_logg = 4.5
rv_template_fe_h = 0.0
rv_atm_param_origin = 222
vbroad = 12.858899
vbroad_error = 0.79617506
vbroad_nb_transits = 10
grvs_mag = 5.280558
grvs_mag_error = 0.02247261
grvs_mag_nb_transits = 12
phot_variable_flag = NOT_AVAILABLE
l = 23.086519315405123
b = 61.3572101082614
ecl_lon = 213.54851050267092
ecl_lat = 33.76885023237257
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 0
has_xp_continuous = false
has_xp_sampled = false
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = true
has_mcmc_msc = false
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.1192878e-13
classprob_dsc_combmod_galaxy = 5.590786e-13
classprob_dsc_combmod_star = 0.9990192
teff_gspphot = 4244.478
teff_gspphot_lower = 4242.5444
teff_gspphot_upper = 4246.52
logg_gspphot = 4.6362
logg_gspphot_lower = 4.6315
logg_gspphot_upper = 4.6402
mh_gspphot = 0.1444
mh_gspphot_lower = 0.1346
mh_gspphot_upper = 0.1581
distance_gspphot = 6.7397
distance_gspphot_lower = 6.7345
distance_gspphot_upper = 6.7454
azero_gspphot = 0.0
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0001
ag_gspphot = 0.0
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0001
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0001
libname_gspphot = MARCS
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1237090738916392704
classprob_dsc_combmod_quasar = 1.0819808e-13
classprob_dsc_combmod_galaxy = 5.4044394e-13
classprob_dsc_combmod_star = 0.9993886
classprob_dsc_combmod_whitedwarf = 2.1237953e-12
classprob_dsc_combmod_binarystar = 0.00061142887
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9423454
classprob_dsc_specmod_whitedwarf = 0.0
classprob_dsc_specmod_binarystar = 0.057654582
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 5386.0786
teff_gspphot_lower = 5377.5137
teff_gspphot_upper = 5394.945
logg_gspphot = 4.4925
logg_gspphot_lower = 4.4816
logg_gspphot_upper = 4.5076
mh_gspphot = -0.0427
mh_gspphot_lower = -0.1059
mh_gspphot_upper = 0.1338
distance_gspphot = 6.7505
distance_gspphot_lower = 6.7046
distance_gspphot_upper = 7.0924
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0008
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0007
abp_gspphot = 0.0001
abp_gspphot_lower = 0.0
abp_gspphot_upper = 0.0008
arp_gspphot = 0.0
arp_gspphot_lower = 0.0
arp_gspphot_upper = 0.0005
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0004
mg_gspphot = 5.3401
mg_gspphot_lower = 5.2343
mg_gspphot_upper = 5.3544
radius_gspphot = 0.8488
radius_gspphot_lower = 0.8439
radius_gspphot_upper = 0.8891
logposterior_gspphot = -5910.2725
mcmcaccept_gspphot = 0.3513793
libname_gspphot = MARCS
teff_gspspec = 5455.0
teff_gspspec_lower = 5447.0
teff_gspspec_upper = 5462.0
logg_gspspec = 5.15
logg_gspspec_lower = 5.14
logg_gspspec_upper = 5.16
mh_gspspec = -0.13
mh_gspspec_lower = -0.14
mh_gspspec_upper = -0.13
alphafe_gspspec = 0.25
alphafe_gspspec_lower = 0.25
alphafe_gspspec_upper = 0.26
dibqf_gspspec = -2
flags_gspspec = 00000002000009999999999999999999999999999
ew_espels_halpha = -0.023944039
ew_espels_halpha_uncertainty = 0.026175557
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.06859
flags_esphs = 93
spectraltype_esphs = G
activityindex_espcs = 0.050763637
activityindex_espcs_uncertainty = 7.498598e-05
activityindex_espcs_input = M2
radius_flame = 0.85529965
radius_flame_lower = 0.8375712
radius_flame_upper = 0.87290144
lum_flame = 0.5541511
lum_flame_lower = 0.5481172
lum_flame_upper = 0.55952656
mass_flame = 0.9037054
mass_flame_lower = 0.86324126
mass_flame_upper = 0.94492954
age_flame = 4.755022
age_flame_lower = 2.948281
age_flame_upper = 6.280825
flags_flame = 00
evolstage_flame = 212
gravredshift_flame = 0.6267239
gravredshift_flame_lower = 0.60622275
gravredshift_flame_upper = 0.6441821
bc_flame = 0.047232624
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1237090738916392832
classprob_dsc_combmod_quasar = 1.1192878e-13
classprob_dsc_combmod_galaxy = 5.590786e-13
classprob_dsc_combmod_star = 0.9990192
classprob_dsc_combmod_whitedwarf = 2.1970242e-12
classprob_dsc_combmod_binarystar = 0.0009807887
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9105993
classprob_dsc_specmod_whitedwarf = 0.0
classprob_dsc_specmod_binarystar = 0.08940076
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 4244.478
teff_gspphot_lower = 4242.5444
teff_gspphot_upper = 4246.52
logg_gspphot = 4.6362
logg_gspphot_lower = 4.6315
logg_gspphot_upper = 4.6402
mh_gspphot = 0.1444
mh_gspphot_lower = 0.1346
mh_gspphot_upper = 0.1581
distance_gspphot = 6.7397
distance_gspphot_lower = 6.7345
distance_gspphot_upper = 6.7454
azero_gspphot = 0.0
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0001
ag_gspphot = 0.0
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0001
abp_gspphot = 0.0
abp_gspphot_lower = 0.0
abp_gspphot_upper = 0.0001
arp_gspphot = 0.0
arp_gspphot_lower = 0.0
arp_gspphot_upper = 0.0001
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0001
mg_gspphot = 7.292
mg_gspphot_lower = 7.29
mg_gspphot_upper = 7.2936
radius_gspphot = 0.6591
radius_gspphot_lower = 0.6582
radius_gspphot_upper = 0.6601
logposterior_gspphot = -7012.5225
mcmcaccept_gspphot = 0.37460816
libname_gspphot = MARCS
teff_gspspec = 4273.0
teff_gspspec_lower = 4269.0
teff_gspspec_upper = 4277.0
logg_gspspec = 5.01
logg_gspspec_lower = 5.0
logg_gspspec_upper = 5.03
mh_gspspec = -0.03
mh_gspspec_lower = -0.05
mh_gspspec_upper = -0.02
alphafe_gspspec = 0.18
alphafe_gspspec_lower = 0.17
alphafe_gspspec_upper = 0.18
dibqf_gspspec = -2
flags_gspspec = 01000001000009999999999999999999999999999
logchisq_gspspec = -2.8329875
ew_espels_halpha = 0.040645402
ew_espels_halpha_uncertainty = 0.02871015
ew_espels_halpha_flag = 1
ew_espels_halpha_model = -0.238752
flags_esphs = 91
spectraltype_esphs = K
activityindex_espcs = 0.046912823
activityindex_espcs_uncertainty = 0.0002746518
activityindex_espcs_input = M2
radius_flame = 0.66196513
radius_flame_lower = 0.64346623
radius_flame_upper = 0.68046457
lum_flame = 0.1281248
lum_flame_lower = 0.12312335
lum_flame_upper = 0.13312654
flags_flame = 20
evolstage_flame = 341
gravredshift_flame = 0.66355366
gravredshift_flame_lower = 0.6580414
gravredshift_flame_upper = 0.66891646
bc_flame = -0.3135984




Observation Date:


Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2026. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.


Acknowledgements
The Double Star Calculator makes use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Additionally, it incorporates data from the Washington Double Star Catalog, maintained at the U.S. Naval Observatory, and makes use of the Aladin Sky Atlas developed at CDS, Strasbourg Observatory, France.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2591 $)
Report created: 2026-09-09 08:35:37 +0200



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