Double Star Calculator - Results


STFB 11 AB - Astrometric and kinematic properties
Gaia Source ID - Star A          : 1790202365373760256     Simbad
Gaia Source ID - Star B          : 1790202571530814464     Simbad
Observation Epoch : J2024.667 / 2024-09-01 Angular Separation : 36.113 ± 0.0038 arcsec Position Angle : 311.53 ± 0.0055 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 36.240 ± 0.0003 arcsec Position Angle : 311.49 ± 0.0005 degree Projected Separation : 1632 au Spatial Separation : 5.87 ± 0.80 pc Spatial Separation : 19.16 ± 2.62 ly Parallax Significance : 6.65 σ 3D Space Velocity Angle : 1.93 ± 0.09 degree ΔProper Motion Angle : 5.65 ± 0.16 degree ΔTotal Proper Motion : 8.22 ± 0.48 mas/yr ΔTangential Velocity : 1.78 ± 0.50 km/s ΔRadial Velocity : 5.54 ± 1.68 km/s ΔSpeed (scalar) : 5.81 ± 1.59 km/s ΔRelative Velocity (3D) : 6.40 ± 1.46 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 1790202365373760256           VizieR
Epoch : J2016.000 Right Ascension (RA) : 21h 22m 5.32s Declination (Dec) : 19° 48' 17.24" Distance : 47.97 ± 0.33 pc Distance : 156.44 ± 1.09 ly Magnitude (G-band) : 3.77 mag Absolute Magnitude : 0.37 ± 0.02 mag Stellar Extinction : N/A Spectral Type (BP/RP) : K Bolometric correction : -0.63 mag Luminosity : 100.24 + 1.41 / − 1.39 L☉ Log(Luminosity) : 2.00106 Teff (bp_rp) : 4800.00 K Log(Teff) : 3.68124 Mass estimation : 3.34 M☉ RUWE : 2.03 Position Angle of Proper Motion : 59.19 ± 0.05 degree Total Proper Motion : 122.70 ± 0.14 mas/yr Tangential Velocity : 27.90 ± 0.20 km/s Radial Velocity (Gaia) : -77.13 ± 0.12 km/s Space Velocity : 82.02 ± 0.13 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.01
Spectral type from ESP-ELS       :          K

Star A - Double Star Quality Metrics
Parallax over error :    143.535 : very good
RUWE                :      2.030 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      3.772 : G > 3 mag, photometry reliable
Excess noise        :      0.805 : Good fit
  Significance      :   1339.988 :   Minor noise, likely negligible
BP-RP excess factor :      1.223 : photometry consistent
Visibility periods  :         14 : high, indicates well observed star
IPD multi-peak frac :        23% : mulitple peaks detected (possible double)
IDP GoF harmonic amp:      0.003 : unobtrusive (single star source)


Star B - Stellar Data
Gaia Source ID                   : 1790202571530814464           VizieR
Epoch : J2016.000 Right Ascension (RA) : 21h 22m 3.40s Declination (Dec) : 19° 48' 41.25" Distance : 42.09 ± 0.73 pc Distance : 137.28 ± 2.39 ly Magnitude (G-band) : 8.95 mag Absolute Magnitude : 5.83 ± 0.04 mag Stellar Extinction : 0.00 ± <0.01 mag Spectral Type (BP/RP) : G Bolometric correction : -0.10 mag Luminosity : 0.40 + 0.01 / − 0.01 L☉ Log(Luminosity) : -0.39450 Effective temperature (Teff) : 4991.15 + 0.71 / - 0.74 K Log(Teff) : 3.69820 Mass estimation : 0.86 M☉ RUWE : 20.38 Position Angle of Proper Motion : 64.84 ± 0.15 degree Total Proper Motion : 130.92 ± 0.46 mas/yr Tangential Velocity : 26.12 ± 0.46 km/s Radial Velocity (Gaia) : -71.60 ± 1.67 km/s Space Velocity : 76.21 ± 1.58 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.04
Radius from GSP-Phot Aeneas      :       0.98  ±   0.02          R☉
Spectral type from ESP-ELS       :          K
Radius of the star from FLAME    :       0.82  ±   0.02          R☉
Bolometric correction            :      -0.03                    mag
Luminosity of the star (FLAME)   :       0.38  ±   0.01          L☉
Mass of the star from FLAME      :       0.79  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        366      Main Sequence (late)

Star B - Double Star Quality Metrics
Parallax over error :     57.530 : very good
RUWE                :     20.380 : poor astrometric fit, (possible double)
Non Single Star     :            : Astrometric and/or Spectroscopic Binary
Duplicated source   :      false : single source
G magnitude         :      8.952 : G > 3 mag, photometry reliable
Excess noise        :      3.358 : Poor fit
  Significance      :  13235.909 :   Possible binary or jitter
BP-RP excess factor :      1.222 : photometry consistent
Visibility periods  :         16 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.015 : 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)          :        0.11     (CPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.21     (Weak)
COMOV: Distance Evidence Indicator :        0.00     (Unlikely)
Co-Moving Total Evidence Indicator :        0.00     (Unlikely)

rPM/COMOV Agreement                :                 (Discrepant)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :        1632     au
Spatial Separation                 :        5.87  ±     0.80  pc
  1-Sigma Range                    : [      5.07,       6.68] pc
  Significance                     :        6.65     σ
  Note: High-confidence 3D separation

3D spatial distance probabilities : =================================== P(D-3D <= 3264 au) : 0.0 % (2.0 * D-projected) P(D-3D <= 10000 au) : 0.0 % (Wide binary) P(D-3D <= 20000 au) : 0.0 % (Very wide binary) P(D-3D <= 50000 au) : 0.0 % (Extremely wide) P(D-3D <= 206265 au) : 0.0 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.11     (CPM)
ΔRelative Velocity (3D)            :        6.40  ±  1.46   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.00     (Unlikely)
WBS: Distance Evidence Indicator   :        0.00     (Unlikely)
Binarity Total Evidence Indicator  :        0.00     (Unlikely)
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

RUWE parameters
RUWE probability for a binary system (Star A) :  2.03 : Medium
RUWE probability for a binary system (Star B) : 20.38 : Very high

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     37.933    0.051     310.908    0.070
1901.0     37.919    0.050     310.913    0.069
1902.0     37.904    0.050     310.918    0.068
1903.0     37.889    0.050     310.922    0.068
1904.0     37.875    0.049     310.927    0.067
1905.0     37.860    0.049     310.932    0.067
1906.0     37.846    0.048     310.937    0.066
1907.0     37.831    0.048     310.942    0.066
1908.0     37.816    0.047     310.946    0.065
1909.0     37.802    0.047     310.951    0.064
1910.0     37.787    0.047     310.956    0.064
1911.0     37.772    0.046     310.961    0.063
1912.0     37.758    0.046     310.966    0.063
1913.0     37.743    0.045     310.971    0.062
1914.0     37.729    0.045     310.975    0.062
1915.0     37.714    0.044     310.980    0.061
1916.0     37.699    0.044     310.985    0.060
1917.0     37.685    0.043     310.990    0.060
1918.0     37.670    0.043     310.995    0.059
1919.0     37.656    0.043     311.000    0.059
1920.0     37.641    0.042     311.004    0.058
1921.0     37.626    0.042     311.009    0.057
1922.0     37.612    0.041     311.014    0.057
1923.0     37.597    0.041     311.019    0.056
1924.0     37.583    0.040     311.024    0.056
1925.0     37.568    0.040     311.029    0.055
1926.0     37.553    0.039     311.034    0.055
1927.0     37.539    0.039     311.038    0.054
1928.0     37.524    0.039     311.043    0.053
1929.0     37.509    0.038     311.048    0.053
1930.0     37.495    0.038     311.053    0.052
1931.0     37.480    0.037     311.058    0.052
1932.0     37.466    0.037     311.063    0.051
1933.0     37.451    0.036     311.068    0.050
1934.0     37.436    0.036     311.073    0.050
1935.0     37.422    0.036     311.078    0.049
1936.0     37.407    0.035     311.082    0.049
1937.0     37.393    0.035     311.087    0.048
1938.0     37.378    0.034     311.092    0.048
1939.0     37.363    0.034     311.097    0.047
1940.0     37.349    0.033     311.102    0.046
1941.0     37.334    0.033     311.107    0.046
1942.0     37.320    0.032     311.112    0.045
1943.0     37.305    0.032     311.117    0.045
1944.0     37.290    0.032     311.122    0.044
1945.0     37.276    0.031     311.127    0.043
1946.0     37.261    0.031     311.132    0.043
1947.0     37.247    0.030     311.137    0.042
1948.0     37.232    0.030     311.142    0.042
1949.0     37.217    0.029     311.147    0.041
1950.0     37.203    0.029     311.152    0.040
1951.0     37.188    0.028     311.157    0.040
1952.0     37.174    0.028     311.161    0.039
1953.0     37.159    0.028     311.166    0.039
1954.0     37.144    0.027     311.171    0.038
1955.0     37.130    0.027     311.176    0.037
1956.0     37.115    0.026     311.181    0.037
1957.0     37.101    0.026     311.186    0.036
1958.0     37.086    0.025     311.191    0.036
1959.0     37.071    0.025     311.196    0.035
1960.0     37.057    0.025     311.201    0.034
1961.0     37.042    0.024     311.206    0.034
1962.0     37.028    0.024     311.211    0.033
1963.0     37.013    0.023     311.216    0.033
1964.0     36.998    0.023     311.221    0.032
1965.0     36.984    0.022     311.226    0.031
1966.0     36.969    0.022     311.231    0.031
1967.0     36.955    0.021     311.237    0.030
1968.0     36.940    0.021     311.242    0.030
1969.0     36.925    0.021     311.247    0.029
1970.0     36.911    0.020     311.252    0.028
1971.0     36.896    0.020     311.257    0.028
1972.0     36.882    0.019     311.262    0.027
1973.0     36.867    0.019     311.267    0.027
1974.0     36.852    0.018     311.272    0.026
1975.0     36.838    0.018     311.277    0.025
1976.0     36.823    0.018     311.282    0.025
1977.0     36.809    0.017     311.287    0.024
1978.0     36.794    0.017     311.292    0.024
1979.0     36.779    0.016     311.297    0.023
1980.0     36.765    0.016     311.302    0.022
1981.0     36.750    0.015     311.307    0.022
1982.0     36.736    0.015     311.312    0.021
1983.0     36.721    0.014     311.318    0.021
1984.0     36.706    0.014     311.323    0.020
1985.0     36.692    0.014     311.328    0.019
1986.0     36.677    0.013     311.333    0.019
1987.0     36.663    0.013     311.338    0.018
1988.0     36.648    0.012     311.343    0.017
1989.0     36.633    0.012     311.348    0.017
1990.0     36.619    0.011     311.353    0.016
1991.0     36.604    0.011     311.358    0.016
1992.0     36.590    0.011     311.364    0.015
1993.0     36.575    0.010     311.369    0.014
1994.0     36.560    0.010     311.374    0.014
1995.0     36.546    0.009     311.379    0.013
1996.0     36.531    0.009     311.384    0.013
1997.0     36.517    0.008     311.389    0.012
1998.0     36.502    0.008     311.394    0.011
1999.0     36.488    0.007     311.400    0.011
2000.0     36.473    0.007     311.405    0.010
2001.0     36.458    0.007     311.410    0.009
2002.0     36.444    0.006     311.415    0.009
2003.0     36.429    0.006     311.420    0.008
2004.0     36.415    0.005     311.425    0.008
2005.0     36.400    0.005     311.431    0.007
2006.0     36.385    0.004     311.436    0.006
2007.0     36.371    0.004     311.441    0.006
2008.0     36.356    0.004     311.446    0.005
2009.0     36.342    0.003     311.451    0.004
2010.0     36.327    0.003     311.457    0.004
2011.0     36.312    0.002     311.462    0.003
2012.0     36.298    0.002     311.467    0.003
2013.0     36.283    0.001     311.472    0.002
2014.0     36.269    0.001     311.477    0.001
2015.0     36.254    0.001     311.483    0.001
2016.0     36.240    0.000     311.488    0.000
2017.0     36.225    0.001     311.493    0.001
2018.0     36.210    0.001     311.498    0.001
2019.0     36.196    0.001     311.504    0.002
2020.0     36.181    0.002     311.509    0.003
2021.0     36.167    0.002     311.514    0.003
2022.0     36.152    0.003     311.519    0.004
2023.0     36.137    0.003     311.525    0.004
2024.0     36.123    0.004     311.530    0.005
2025.0     36.108    0.004     311.535    0.006
2026.0     36.094    0.004     311.540    0.006
2027.0     36.079    0.005     311.546    0.007
2028.0     36.065    0.005     311.551    0.008
2029.0     36.050    0.006     311.556    0.008
2030.0     36.035    0.006     311.562    0.009
2031.0     36.021    0.007     311.567    0.010
2032.0     36.006    0.007     311.572    0.010
2033.0     35.992    0.007     311.577    0.011
2034.0     35.977    0.008     311.583    0.011
2035.0     35.963    0.008     311.588    0.012
2036.0     35.948    0.009     311.593    0.013
2037.0     35.933    0.009     311.599    0.013
2038.0     35.919    0.010     311.604    0.014
2039.0     35.904    0.010     311.609    0.015
2040.0     35.890    0.010     311.615    0.015
2041.0     35.875    0.011     311.620    0.016
2042.0     35.860    0.011     311.625    0.017
2043.0     35.846    0.012     311.631    0.017
2044.0     35.831    0.012     311.636    0.018
2045.0     35.817    0.013     311.641    0.019
2046.0     35.802    0.013     311.647    0.019
2047.0     35.788    0.014     311.652    0.020
2048.0     35.773    0.014     311.657    0.021
2049.0     35.758    0.014     311.663    0.021
2050.0     35.744    0.015     311.668    0.022
2051.0     35.729    0.015     311.674    0.022
2052.0     35.715    0.016     311.679    0.023
2053.0     35.700    0.016     311.684    0.024
2054.0     35.686    0.017     311.690    0.024
2055.0     35.671    0.017     311.695    0.025
2056.0     35.656    0.017     311.701    0.026
2057.0     35.642    0.018     311.706    0.026
2058.0     35.627    0.018     311.711    0.027
2059.0     35.613    0.019     311.717    0.028
2060.0     35.598    0.019     311.722    0.028
2061.0     35.584    0.020     311.728    0.029
2062.0     35.569    0.020     311.733    0.030
2063.0     35.554    0.021     311.738    0.030
2064.0     35.540    0.021     311.744    0.031
2065.0     35.525    0.021     311.749    0.032
2066.0     35.511    0.022     311.755    0.032
2067.0     35.496    0.022     311.760    0.033
2068.0     35.482    0.023     311.766    0.034
2069.0     35.467    0.023     311.771    0.034
2070.0     35.452    0.024     311.777    0.035
2071.0     35.438    0.024     311.782    0.036
2072.0     35.423    0.024     311.788    0.036
2073.0     35.409    0.025     311.793    0.037
2074.0     35.394    0.025     311.799    0.038
2075.0     35.380    0.026     311.804    0.038
2076.0     35.365    0.026     311.810    0.039
2077.0     35.351    0.027     311.815    0.040
2078.0     35.336    0.027     311.821    0.040
2079.0     35.321    0.027     311.826    0.041
2080.0     35.307    0.028     311.832    0.042
2081.0     35.292    0.028     311.837    0.042
2082.0     35.278    0.029     311.843    0.043
2083.0     35.263    0.029     311.848    0.044
2084.0     35.249    0.030     311.854    0.044
2085.0     35.234    0.030     311.859    0.045
2086.0     35.219    0.031     311.865    0.046
2087.0     35.205    0.031     311.870    0.046
2088.0     35.190    0.031     311.876    0.047
2089.0     35.176    0.032     311.881    0.048
2090.0     35.161    0.032     311.887    0.048
2091.0     35.147    0.033     311.892    0.049
2092.0     35.132    0.033     311.898    0.050
2093.0     35.118    0.034     311.904    0.050
2094.0     35.103    0.034     311.909    0.051
2095.0     35.088    0.034     311.915    0.052
2096.0     35.074    0.035     311.920    0.052
2097.0     35.059    0.035     311.926    0.053
2098.0     35.045    0.036     311.931    0.054
2099.0     35.030    0.036     311.937    0.054
2100.0     35.016    0.037     311.943    0.055




Measurements for STFB 11 AB

WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
21221+1948  STFB 11     AB    1    36.36"   311.2°   B2024.671  HWI  120/900 APO   ASI678MM  


WDS record for STFB 11 AB
wds_id                       : 21221+1948
discoverer_code              : STFB
discoverer_number            : 11
discoverer_components        : AB
date_first                   : 1780
date_last                    : 2020
num_of_obs                   : 85
pa_first                     : 308
pa_last                      : 313
sep_first                    : 37.1
sep_last                     : 36.6
mag_primary                  : 4.2
mag_secondary                : 9.3
spectral_type                : K1III+K0V
primary_proper_motion_RA     : 105
primary_proper_motion_DEC    : 63
secondary_proper_motion_RA   : 119
secondary_proper_motion_DEC  : 56
dm_number                    : +19 4691
notes                        : NO T
precise_coordinate           : 212205.13+194815.7
                             : 21:22:05.13 +19:48:15.7

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
O: Orbit described in WDSNOT MEMO and has entry in Orbit Catalog
T: Similar parallax/proper motion: physical


Orbital Elements for STFB 11 AB
WDS: STFB 11 AB WDS ID/Discoverer
P: 13500.000 Orbital period (years)
a: 21.97 Semi-major axis (arcseconds)
i: 18.0 Inclination (degrees)
Ω: 131.0 Longitude of ascending node (degrees)
T: 7315.000 Epoch of periastron passage (year)
e: 0.7 Eccentricity
ω: 351.0 Argument of periastron (degrees)
Start-Year: -4725.000 Year
End-Year: 8775.000 Year
Epoch: 2024.67 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STFB 11 AB
Position: 212205.13+194815.7 Epoch-2000 right ascension and declination
WDS-ID: 21221+1948 WDS designation
Discoverer Code: STFB 11 AB Discover designation and components
ADS number: 14909 Aitken Double Star catalog
HD number: 203504 HD catalog number
Hipparcos number: 105502 Hipparcos catalog number
V1: 4.20 Magnitude of the primary
V2: 9.3 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2011 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
8 = Interferometric
9 = Astrometric
Flags: n Flags
Ephemerides: Ephemerides
Code: PkO2014c Reference

Double Star Orbit for STFB 11 AB



WDS 6th Orbit including measures of STFB 11 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 STFB 11 AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2024.67   36.110   311.80
--------------------------
-4800.00   17.465   246.41
-4700.00   18.291   249.14
-4600.00   19.093   251.65
-4500.00   19.872   253.95
-4400.00   20.629   256.08
-4300.00   21.364   258.07
-4200.00   22.077   259.92
-4100.00   22.768   261.66
-4000.00   23.439   263.30
-3900.00   24.089   264.84
-3800.00   24.720   266.31
-3700.00   25.331   267.71
-3600.00   25.923   269.04
-3500.00   26.496   270.31
-3400.00   27.052   271.53
-3300.00   27.590   272.70
-3200.00   28.110   273.83
-3100.00   28.613   274.92
-3000.00   29.100   275.97
-2900.00   29.571   276.98
-2800.00   30.025   277.97
-2700.00   30.464   278.92
-2600.00   30.887   279.85
-2500.00   31.295   280.76
-2400.00   31.688   281.64
-2300.00   32.066   282.50
-2200.00   32.430   283.34
-2100.00   32.780   284.16
-2000.00   33.115   284.97
-1900.00   33.437   285.75
-1800.00   33.745   286.53
-1700.00   34.039   287.29
-1600.00   34.320   288.04
-1500.00   34.587   288.78
-1400.00   34.842   289.50
-1300.00   35.083   290.22
-1200.00   35.311   290.92
-1100.00   35.527   291.62
-1000.00   35.730   292.31
-900.00   35.920   292.99
-800.00   36.098   293.66
-700.00   36.263   294.33
-600.00   36.417   294.99
-500.00   36.557   295.65
-400.00   36.686   296.30
-300.00   36.802   296.95
-200.00   36.906   297.59
-100.00   36.998   298.23
0.00   37.078   298.87
100.00   37.146   299.50
200.00   37.202   300.14
300.00   37.247   300.77
400.00   37.279   301.40
500.00   37.299   302.03
600.00   37.307   302.65
700.00   37.303   303.28
800.00   37.287   303.91
900.00   37.259   304.54
1000.00   37.220   305.17
1100.00   37.168   305.80
1200.00   37.104   306.44
1300.00   37.028   307.07
1400.00   36.940   307.71
1500.00   36.839   308.35
1600.00   36.727   309.00
1700.00   36.602   309.65
1800.00   36.464   310.30
1900.00   36.314   310.96
2000.00   36.152   311.63
2100.00   35.977   312.30
2200.00   35.789   312.98
2300.00   35.588   313.67
2400.00   35.375   314.36
2500.00   35.148   315.07
2600.00   34.908   315.78
2700.00   34.655   316.50
2800.00   34.388   317.23
2900.00   34.107   317.98
3000.00   33.813   318.74
3100.00   33.505   319.51
3200.00   33.182   320.30
3300.00   32.845   321.10
3400.00   32.494   321.92
3500.00   32.127   322.75
3600.00   31.746   323.61
3700.00   31.349   324.49
3800.00   30.937   325.39
3900.00   30.508   326.32
4000.00   30.064   327.27
4100.00   29.603   328.25
4200.00   29.125   329.27
4300.00   28.629   330.31
4400.00   28.116   331.40
4500.00   27.586   332.53
4600.00   27.036   333.70
4700.00   26.468   334.92
4800.00   25.880   336.20
4900.00   25.273   337.53
5000.00   24.645   338.94
5100.00   23.996   340.41
5200.00   23.325   341.98
5300.00   22.632   343.63
5400.00   21.917   345.39
5500.00   21.178   347.28
5600.00   20.415   349.30
5700.00   19.627   351.48
5800.00   18.815   353.85
5900.00   17.977   356.43
6000.00   17.113   359.27
6100.00   16.224     2.42
6200.00   15.310     5.94
6300.00   14.373     9.91
6400.00   13.414    14.44
6500.00   12.440    19.68
6600.00   11.456    25.82
6700.00   10.476    33.10
6800.00    9.519    41.87
6900.00    8.614    52.55
7000.00    7.808    65.58
7100.00    7.159    81.29
7200.00    6.733    99.53
7300.00    6.581   119.41
7400.00    6.715   139.33
7500.00    7.109   157.75
7600.00    7.709   173.76
7700.00    8.458   187.20
7800.00    9.304   198.33
7900.00   10.207   207.54
8000.00   11.139   215.23
8100.00   12.080   221.73
8200.00   13.018   227.29
8300.00   13.945   232.10
8400.00   14.856   236.32
8500.00   15.747   240.06
8600.00   16.617   243.40
8700.00   17.465   246.41
8800.00   18.291   249.14


Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1790202365373760256
source_id = 1790202365373760256
random_index = 307218936
ref_epoch = 2016.0
ra = 320.52216241512485
ra_error = 0.13590373
dec = 19.804789713946604
dec_error = 0.07526381
parallax = 20.848168338475414
parallax_error = 0.14524819
parallax_over_error = 143.53479
pm = 122.70384
pmra = 105.39116798282723
pmra_error = 0.15698768
pmdec = 62.84054757968135
pmdec_error = 0.08982463
ra_dec_corr = -0.58612895
ra_parallax_corr = 0.3591708
ra_pmra_corr = -0.3758696
ra_pmdec_corr = 0.36503989
dec_parallax_corr = -0.09390976
dec_pmra_corr = 0.29731423
dec_pmdec_corr = -0.5598287
parallax_pmra_corr = -0.30443913
parallax_pmdec_corr = 0.16437063
pmra_pmdec_corr = -0.49001262
astrometric_n_obs_al = 317
astrometric_n_obs_ac = 317
astrometric_n_good_obs_al = 308
astrometric_n_bad_obs_al = 9
astrometric_gof_al = 22.360481
astrometric_chi2_al = 39973.805
astrometric_excess_noise = 0.80543983
astrometric_excess_noise_sig = 1339.9878
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.3665113
pseudocolour_error = 0.021025978
ra_pseudocolour_corr = -0.08022385
dec_pseudocolour_corr = 0.20119385
parallax_pseudocolour_corr = -0.17388931
pmra_pseudocolour_corr = 0.029655028
pmdec_pseudocolour_corr = -0.23590487
astrometric_matched_transits = 36
visibility_periods_used = 14
astrometric_sigma5d_max = 0.24231593
matched_transits = 38
new_matched_transits = 38
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.0029425793
ipd_gof_harmonic_phase = 159.31003
ipd_frac_multi_peak = 23
ipd_frac_odd_win = 0
ruwe = 2.034912
duplicated_source = false
phot_g_n_obs = 298
phot_g_mean_flux = 583637197.0746934
phot_g_mean_flux_error = 523195.97
phot_g_mean_flux_over_error = 1115.5231
phot_g_mean_mag = 3.7720094
phot_bp_n_obs = 36
phot_bp_mean_flux = 245306950.67873347
phot_bp_mean_flux_error = 1545927.6
phot_bp_mean_flux_over_error = 158.67946
phot_bp_mean_mag = 4.3642673
phot_rp_n_obs = 36
phot_rp_mean_flux = 468749922.20551413
phot_rp_mean_flux_error = 1534870.1
phot_rp_mean_flux_over_error = 305.4004
phot_rp_mean_mag = 3.0705426
phot_bp_rp_excess_factor = 1.2234602
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 = 1.2937248
bp_g = 0.592258
g_rp = 0.7014668
radial_velocity = -77.13383
radial_velocity_error = 0.12048626
rv_method_used = 1
rv_nb_transits = 2
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 2
rv_expected_sig_to_noise = 562.5219
rv_time_duration = 577.5172
rv_template_teff = 4750.0
rv_template_logg = 2.5
rv_template_fe_h = 0.0
rv_atm_param_origin = 222
grvs_mag = 2.8570213
grvs_mag_error = 0.025528409
grvs_mag_nb_transits = 2
phot_variable_flag = NOT_AVAILABLE
l = 70.0508882917806
b = -20.92429750569382
ecl_lon = 330.3110381145384
ecl_lat = 33.28460915633415
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 0
has_xp_continuous = true
has_xp_sampled = true
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = false
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.0274254e-13
classprob_dsc_combmod_galaxy = 5.131938e-13
classprob_dsc_combmod_star = 0.9999288
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1790202571530814464
source_id = 1790202571530814464
random_index = 1531098218
ref_epoch = 2016.0
ra = 320.5141472143
ra_error = 0.3386812
dec = 19.811458233769162
dec_error = 0.24415031
parallax = 23.75798711938306
parallax_error = 0.4129684
parallax_over_error = 57.529797
pm = 130.92096
pmra = 118.5008133076914
pmra_error = 0.49270898
pmdec = 55.658361007848455
pmdec_error = 0.29223695
ra_dec_corr = -0.33734155
ra_parallax_corr = 0.04002275
ra_pmra_corr = -0.28770489
ra_pmdec_corr = 0.23000385
dec_parallax_corr = 0.035078473
dec_pmra_corr = 0.22420108
dec_pmdec_corr = -0.5563622
parallax_pmra_corr = -0.023948815
parallax_pmdec_corr = 0.05005881
pmra_pmdec_corr = -0.33660212
astrometric_n_obs_al = 435
astrometric_n_obs_ac = 435
astrometric_n_good_obs_al = 417
astrometric_n_bad_obs_al = 18
astrometric_gof_al = 278.20996
astrometric_chi2_al = 343420.44
astrometric_excess_noise = 3.3581378
astrometric_excess_noise_sig = 13235.909
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.5064553
astrometric_matched_transits = 47
visibility_periods_used = 16
astrometric_sigma5d_max = 0.71435726
matched_transits = 54
new_matched_transits = 24
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.015186522
ipd_gof_harmonic_phase = 176.26775
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 20.378487
duplicated_source = false
phot_g_n_obs = 457
phot_g_mean_flux = 4943448.37226442
phot_g_mean_flux_error = 521.97144
phot_g_mean_flux_over_error = 9470.726
phot_g_mean_mag = 8.9522915
phot_bp_n_obs = 49
phot_bp_mean_flux = 2399024.1892303564
phot_bp_mean_flux_error = 465.80734
phot_bp_mean_flux_over_error = 5150.25
phot_bp_mean_mag = 9.388455
phot_rp_n_obs = 51
phot_rp_mean_flux = 3643011.611914294
phot_rp_mean_flux_error = 1093.9037
phot_rp_mean_flux_over_error = 3330.2856
phot_rp_mean_mag = 8.344244
phot_bp_rp_excess_factor = 1.222231
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 = 1.0442114
bp_g = 0.4361639
g_rp = 0.6080475
radial_velocity = -71.59508
radial_velocity_error = 1.6737016
rv_method_used = 1
rv_nb_transits = 17
rv_nb_deblended_transits = 3
rv_visibility_periods_used = 10
rv_expected_sig_to_noise = 196.62439
rv_renormalised_gof = 58.42961
rv_chisq_pvalue = 0.0
rv_time_duration = 899.46515
rv_amplitude_robust = 13.200424
rv_template_teff = 5250.0
rv_template_logg = 4.0
rv_template_fe_h = 0.0
rv_atm_param_origin = 440
vbroad = 8.027012
vbroad_error = 2.2624555
vbroad_nb_transits = 12
grvs_mag = 8.095754
grvs_mag_error = 0.006668367
grvs_mag_nb_transits = 12
phot_variable_flag = NOT_AVAILABLE
l = 70.05097293584309
b = -20.914231273411257
ecl_lon = 330.30557736795606
ecl_lat = 33.29358126716763
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 3
has_xp_continuous = true
has_xp_sampled = true
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = true
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.0589242e-13
classprob_dsc_combmod_galaxy = 5.289273e-13
classprob_dsc_combmod_star = 0.99961686
teff_gspphot = 4991.1455
teff_gspphot_lower = 4990.408
teff_gspphot_upper = 4991.855
logg_gspphot = 4.402
logg_gspphot_lower = 4.3924
logg_gspphot_upper = 4.4105
mh_gspphot = -0.4121
mh_gspphot_lower = -0.4154
mh_gspphot_upper = -0.4085
distance_gspphot = 50.2283
distance_gspphot_lower = 49.4341
distance_gspphot_upper = 51.1029
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0003
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0003
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0002
libname_gspphot = MARCS
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1790202365373760256
classprob_dsc_combmod_quasar = 1.0274254e-13
classprob_dsc_combmod_galaxy = 5.131938e-13
classprob_dsc_combmod_star = 0.9999288
classprob_dsc_combmod_whitedwarf = 1.8759103e-09
classprob_dsc_combmod_binarystar = 7.121017e-05
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.99291945
classprob_dsc_specmod_whitedwarf = 9.291836e-06
classprob_dsc_specmod_binarystar = 0.0070712897
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspspec = 4635.0
teff_gspspec_lower = 4629.0
teff_gspspec_upper = 4641.0
logg_gspspec = 2.07
logg_gspspec_lower = 2.06
logg_gspspec_upper = 2.09
mh_gspspec = -0.06
mh_gspspec_lower = -0.06
mh_gspspec_upper = -0.05
alphafe_gspspec = -0.02
alphafe_gspspec_lower = -0.02
alphafe_gspspec_upper = -0.02
fem_gspspec = -0.14
fem_gspspec_lower = -0.18
fem_gspspec_upper = -0.09
fem_gspspec_nlines = 8
fem_gspspec_linescatter = 0.14
sife_gspspec = -0.04
sife_gspspec_lower = -0.08
sife_gspspec_upper = 0.01
sife_gspspec_nlines = 3
sife_gspspec_linescatter = 0.03
cafe_gspspec = -0.02
cafe_gspspec_lower = -0.03
cafe_gspspec_upper = -0.02
cafe_gspspec_nlines = 7
cafe_gspspec_linescatter = 0.01
tife_gspspec = -0.04
tife_gspspec_lower = -0.08
tife_gspspec_upper = 0.0
tife_gspspec_nlines = 3
tife_gspspec_linescatter = 0.07
mgfe_gspspec = 0.2
mgfe_gspspec_lower = 0.07
mgfe_gspspec_upper = 0.32
mgfe_gspspec_nlines = 1
mgfe_gspspec_linescatter = 0.0
nfe_gspspec = -0.11
nfe_gspspec_lower = -0.17
nfe_gspspec_upper = -0.06
nfe_gspspec_nlines = 2
nfe_gspspec_linescatter = 0.02
crfe_gspspec = 0.13
crfe_gspspec_lower = 0.06
crfe_gspspec_upper = 0.18
crfe_gspspec_nlines = 1
crfe_gspspec_linescatter = 0.0
nife_gspspec = -0.04
nife_gspspec_lower = -0.17
nife_gspspec_upper = 0.04
nife_gspspec_nlines = 1
nife_gspspec_linescatter = 0.0
cn0ew_gspspec = 0.02
cn0ew_gspspec_uncertainty = 0.01
cn0_gspspec_centralline = 862.87
cn0_gspspec_width = 0.25
dib_gspspec_lambda = 861.7659
dib_gspspec_lambda_uncertainty = 0.02234218
dibew_gspspec = 0.021
dibew_gspspec_uncertainty = 0.002
dibewnoise_gspspec_uncertainty = 0.0012
dibp0_gspspec = -0.0235
dibp2_gspspec = 0.3481
dibp2_gspspec_uncertainty = 1.5504
dibqf_gspspec = 5
flags_gspspec = 00000000000001000009900001000990099999905
logchisq_gspspec = -4.184027
ew_espels_halpha = -0.0943461
ew_espels_halpha_uncertainty = 0.016959928
ew_espels_halpha_flag = 1
ew_espels_halpha_model = 0.040676
flags_esphs = 93
spectraltype_esphs = K
mh_msc = -0.36327773
mh_msc_upper = 0.5
mh_msc_lower = -1.0
azero_msc = 0.19449955
azero_msc_upper = 1.4749057
azero_msc_lower = 0.0
distance_msc = 20.220198
distance_msc_upper = 51.90744
distance_msc_lower = 10.0
teff_msc1 = 3989.6782
teff_msc1_upper = 7063.5796
teff_msc1_lower = 3000.0
teff_msc2 = 5462.544
teff_msc2_upper = 8000.0
teff_msc2_lower = 3669.1895
logg_msc1 = 3.5255156
logg_msc1_upper = 5.2
logg_msc1_lower = 2.0
logg_msc2 = 4.152702
logg_msc2_upper = 5.2
logg_msc2_lower = 2.791575
ag_msc = 0.15137018
ag_msc_upper = 1.1367221
ag_msc_lower = 0.0
logposterior_msc = -40317.312
mcmcaccept_msc = 0.16568018
mcmcdrift_msc = 0.04035149
flags_msc = 1
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1790202571530814464
classprob_dsc_combmod_quasar = 1.0589242e-13
classprob_dsc_combmod_galaxy = 5.289273e-13
classprob_dsc_combmod_star = 0.99961686
classprob_dsc_combmod_whitedwarf = 2.078538e-12
classprob_dsc_combmod_binarystar = 0.00038315827
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.96308345
classprob_dsc_specmod_whitedwarf = 0.0
classprob_dsc_specmod_binarystar = 0.03691652
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 4991.1455
teff_gspphot_lower = 4990.408
teff_gspphot_upper = 4991.855
logg_gspphot = 4.402
logg_gspphot_lower = 4.3924
logg_gspphot_upper = 4.4105
mh_gspphot = -0.4121
mh_gspphot_lower = -0.4154
mh_gspphot_upper = -0.4085
distance_gspphot = 50.2283
distance_gspphot_lower = 49.4341
distance_gspphot_upper = 51.1029
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0003
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0003
abp_gspphot = 0.0001
abp_gspphot_lower = 0.0
abp_gspphot_upper = 0.0003
arp_gspphot = 0.0001
arp_gspphot_lower = 0.0
arp_gspphot_upper = 0.0002
ebpminrp_gspphot = 0.0
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0002
mg_gspphot = 5.4368
mg_gspphot_lower = 5.3995
mg_gspphot_upper = 5.472
radius_gspphot = 0.9816
radius_gspphot_lower = 0.9658
radius_gspphot_upper = 0.9989
logposterior_gspphot = -4693.456
mcmcaccept_gspphot = 0.42846394
libname_gspphot = MARCS
teff_gspspec = 5166.0
teff_gspspec_lower = 5155.0
teff_gspspec_upper = 5181.0
logg_gspspec = 4.28
logg_gspspec_lower = 4.25
logg_gspspec_upper = 4.32
mh_gspspec = -0.12
mh_gspspec_lower = -0.13
mh_gspspec_upper = -0.11
alphafe_gspspec = 0.09
alphafe_gspspec_lower = 0.08
alphafe_gspspec_upper = 0.1
fem_gspspec = -0.05
fem_gspspec_lower = -0.13
fem_gspspec_upper = 0.01
fem_gspspec_nlines = 7
fem_gspspec_linescatter = 0.06
sife_gspspec = -0.14
sife_gspspec_lower = -0.27
sife_gspspec_upper = -0.06
sife_gspspec_nlines = 3
sife_gspspec_linescatter = 0.05
cafe_gspspec = 0.07
cafe_gspspec_lower = 0.06
cafe_gspspec_upper = 0.09
cafe_gspspec_nlines = 7
cafe_gspspec_linescatter = 0.02
tife_gspspec = 0.15
tife_gspspec_lower = 0.06
tife_gspspec_upper = 0.25
tife_gspspec_nlines = 2
tife_gspspec_linescatter = 0.04
mgfe_gspspec = 0.19
mgfe_gspspec_lower = 0.07
mgfe_gspspec_upper = 0.28
mgfe_gspspec_nlines = 1
mgfe_gspspec_linescatter = 0.0
nfe_gspspec = 0.08
nfe_gspspec_lower = -0.04
nfe_gspspec_upper = 0.21
nfe_gspspec_nlines = 1
nfe_gspspec_linescatter = 0.0
nife_gspspec = 0.04
nife_gspspec_lower = -0.11
nife_gspspec_upper = 0.27
nife_gspspec_nlines = 1
nife_gspspec_linescatter = 0.0
dibqf_gspspec = -1
flags_gspspec = 00000000000001000009900009900992199999999
logchisq_gspspec = -4.274475
ew_espels_halpha = -0.043081757
ew_espels_halpha_uncertainty = 0.011800011
ew_espels_halpha_flag = 1
ew_espels_halpha_model = 0.036912
flags_esphs = 93
spectraltype_esphs = K
activityindex_espcs = 0.012310288
activityindex_espcs_uncertainty = 0.00020835083
activityindex_espcs_input = M1
radius_flame = 0.81913877
radius_flame_lower = 0.79789245
radius_flame_upper = 0.8409404
lum_flame = 0.37516075
lum_flame_lower = 0.3627691
lum_flame_upper = 0.3883369
mass_flame = 0.7873846
mass_flame_lower = 0.74716246
mass_flame_upper = 0.82779485
age_flame = 12.533723
age_flame_lower = 10.001404
age_flame_upper = 13.5
flags_flame = 00
evolstage_flame = 366
gravredshift_flame = 0.5735563
gravredshift_flame_lower = 0.570993
gravredshift_flame_upper = 0.57512295
bc_flame = -0.030758444
mh_msc = -0.1941886
mh_msc_upper = -0.102160364
mh_msc_lower = -0.28544688
azero_msc = 0.2081439
azero_msc_upper = 0.4100399
azero_msc_lower = 0.12532891
distance_msc = 61.045048
distance_msc_upper = 63.44579
distance_msc_lower = 56.169865
teff_msc1 = 5070.9434
teff_msc1_upper = 5179.7812
teff_msc1_lower = 4993.7314
teff_msc2 = 4950.915
teff_msc2_upper = 5214.6016
teff_msc2_lower = 4732.2236
logg_msc1 = 4.3800793
logg_msc1_upper = 4.4494734
logg_msc1_lower = 4.3477974
logg_msc2 = 4.5974197
logg_msc2_upper = 4.682378
logg_msc2_lower = 4.5128098
ag_msc = 0.16483872
ag_msc_upper = 0.31544328
ag_msc_lower = 0.09894116
logposterior_msc = 235.3941
mcmcaccept_msc = 0.19102626
mcmcdrift_msc = 0.1516371
flags_msc = 0




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 08:50:39 +0200



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