Double Star Calculator - Results


STF 1965 - Astrometric and kinematic properties
Gaia Source ID - Star A          : 1374695306328813568     Simbad
Gaia Source ID - Star B          : 1374695306328813696     Simbad
Observation Epoch : J2025.521 / 2025-07-10 Angular Separation : 6.353 ± 0.0010 arcsec Position Angle : 306.27 ± 0.0094 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 6.344 ± 0.0001 arcsec Position Angle : 305.95 ± 0.0007 degree Projected Separation : 989 au Spatial Separation : 1.56 ± 8.27 ly Spatial Separation : 98489 ± 522947 au Parallax Significance : 0.19 σ ΔProper Motion Angle : 10.08 ± 0.40 degree ΔTotal Proper Motion : 2.66 ± 0.10 mas/yr ΔTangential Velocity : 1.93 ± 0.22 km/s ΔRelative Velocity (2D) : 2.82 ± 0.14 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 1374695306328813568           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 39m 22.65s Declination (Dec) : 36° 38' 8.80" Distance : 155.62 ± 2.32 pc Distance : 507.57 ± 7.58 ly Magnitude (G-band) : 4.99 mag Absolute Magnitude : -0.99 ± 0.03 mag Stellar Extinction : 0.02 ± <0.01 mag Spectral Type (BP/RP) : O Bolometric correction : -3.76 mag Luminosity : 6257.16 + 190.24 / − 184.63 L☉ Log(Luminosity) : 3.79638 Effective temperature (Teff) : 12157.06 +34.31 / -37.97 K Log(Teff) : 4.08483 Mass estimation : 9.09 M☉ RUWE : 1.11 Position Angle of Proper Motion : 244.30 ± 0.36 degree Total Proper Motion : 17.21 ± 0.09 mas/yr Tangential Velocity : 12.70 ± 0.20 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.00
Radius from GSP-Phot Aeneas      :       4.31  ±   0.06          R☉
Spectral type from ESP-ELS       :          B
Radius of the star from FLAME    :       4.34  ±   0.11          R☉
Bolometric correction            :      -0.70                    mag
Luminosity of the star (FLAME)   :     370.96  ±  10.81          L☉
Mass of the star from FLAME      :       3.89  ±   0.05          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        273      Main Sequence (early)

Star A - Double Star Quality Metrics
Parallax over error :     66.951 : very good
RUWE                :      1.110 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      4.985 : G > 3 mag, photometry reliable
Excess noise        :      0.802 : Good fit
  Significance      :   1018.665 :   Minor noise, likely negligible
BP-RP excess factor :      1.146 : photometry consistent
Visibility periods  :         20 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.129 : slight indication of structure


Star B - Stellar Data
Gaia Source ID                   : 1374695306328813696           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 39m 22.23s Declination (Dec) : 36° 38' 12.52" Distance : 156.10 ± 1.01 pc Distance : 509.12 ± 3.30 ly Magnitude (G-band) : 5.98 mag Absolute Magnitude : 0.01 ± 0.01 mag Stellar Extinction : 0.00 ± <0.01 mag Spectral Type (BP/RP) : O Bolometric correction : -3.76 mag Luminosity : 2496.34 + 32.75 / − 32.33 L☉ Log(Luminosity) : 3.39730 Effective temperature (Teff) : 13291.98 +57.80 / -74.06 K Log(Teff) : 4.12359 Mass estimation : 7.21 M☉ RUWE : 0.90 Position Angle of Proper Motion : 254.37 ± 0.18 degree Total Proper Motion : 14.55 ± 0.04 mas/yr Tangential Velocity : 10.77 ± 0.07 km/s Radial Velocity (Simbad) : -19.40 ± 2.00 km/s Bibcode : 1953GCRV..C......0W Space Velocity : 22.19 ± 1.75 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.00
Radius from GSP-Phot Aeneas      :       2.63  ±   0.02          R☉
Spectral type from ESP-ELS       :          B
Radius of the star from FLAME    :       2.63  ±   0.06          R☉
Bolometric correction            :      -1.00                    mag
Luminosity of the star (FLAME)   :     194.47  ±   3.81          L☉
Mass of the star from FLAME      :       3.60  ±   0.05          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        180      Main Sequence (early)

Star B - Double Star Quality Metrics
Parallax over error :    154.139 : very good
RUWE                :      0.900 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      5.975 : G > 3 mag, photometry reliable
Excess noise        :      0.358 : Good fit
  Significance      :    196.307 :   Minor noise, likely negligible
BP-RP excess factor :      1.162 : photometry consistent
Visibility periods  :         23 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.026 : 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)          :        0.22     (SPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.73     (Strong)
COMOV: Distance Evidence Indicator :        0.36     (Moderate)
Co-Moving Total Evidence Indicator :        0.51     (Moderate)

rPM/COMOV Agreement                :                 (High)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :         989     au
Spatial Separation                 :       98489  ±   522947  au
  1-Sigma Range                    : [       989,     621437] au
  Significance                     :        0.19     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 1978 au) : 0.1 % (2.0 * D-projected) P(D-3D <= 2500 au) : 0.2 % (Wide binary) P(D-3D <= 10000 au) : 1.2 % (Wide binary) P(D-3D <= 20000 au) : 2.5 % (Very wide binary) P(D-3D <= 50000 au) : 6.4 % (Extremely wide) P(D-3D <= 206265 au) : 27.1 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.22     (SPM)
ΔRelative Velocity (2D)            :        2.82  ±  0.14   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.00     (Unlikely)
WBS: Distance Evidence Indicator   :        0.04     (Unlikely)
Binarity Total Evidence Indicator  :        0.00     (Unlikely)


UWLE for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.17     (Weak)
WBS: Distance Evidence Indicator   :        0.04     (Unlikely)
Binarity Total Evidence Indicator  :        0.08     (Unlikely)

UWLE for Tight Binaries (2D) : =================================== TBS: Velocity Evidence Indicator : 0.17 (Weak) TBS: Distance Evidence Indicator : 0.38 (Moderate) Binarity Total Evidence Indicator : 0.25 (Weak) Orbital & Binding Dynamics : ----------------------------------- Est. orbital period at lower bound : 6675.10 years Escape Velocity : 5.41 km/s (Bound) 2D Velocity Difference : 2.82 ± 0.14 km/s Circular Orbital Velocity : 3.82 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]         :      0.2344  ± 0.0558 dex
  Metallicity reliability factor A :        0.98
Metallicity Star B - [M/H]         :     -0.9949  ± 0.2792 dex
  Metallicity reliability factor B :        0.86
Metallicity Difference             :      1.2293           dex
Combined uncertainty               :      0.3537           dex
Sigma-Distance (Z-Score)           :      3.48 σ
  Compatibility                    :  Inconsistent (likely different)

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) :  1.11 : Zero
RUWE probability for a binary system (Star B) :  0.90 : Zero

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      6.259    0.012     301.959    0.118
1901.0      6.259    0.012     301.994    0.117
1902.0      6.260    0.012     302.029    0.116
1903.0      6.260    0.012     302.064    0.115
1904.0      6.261    0.012     302.098    0.114
1905.0      6.262    0.012     302.133    0.113
1906.0      6.262    0.011     302.168    0.112
1907.0      6.263    0.011     302.203    0.111
1908.0      6.264    0.011     302.237    0.109
1909.0      6.264    0.011     302.272    0.108
1910.0      6.265    0.011     302.307    0.107
1911.0      6.265    0.011     302.342    0.106
1912.0      6.266    0.011     302.376    0.105
1913.0      6.267    0.011     302.411    0.104
1914.0      6.267    0.011     302.446    0.103
1915.0      6.268    0.011     302.481    0.102
1916.0      6.269    0.010     302.515    0.101
1917.0      6.269    0.010     302.550    0.100
1918.0      6.270    0.010     302.585    0.099
1919.0      6.271    0.010     302.619    0.098
1920.0      6.271    0.010     302.654    0.097
1921.0      6.272    0.010     302.689    0.096
1922.0      6.272    0.010     302.723    0.095
1923.0      6.273    0.010     302.758    0.094
1924.0      6.274    0.010     302.793    0.093
1925.0      6.274    0.010     302.827    0.092
1926.0      6.275    0.009     302.862    0.091
1927.0      6.276    0.009     302.896    0.090
1928.0      6.276    0.009     302.931    0.089
1929.0      6.277    0.009     302.966    0.088
1930.0      6.278    0.009     303.000    0.087
1931.0      6.278    0.009     303.035    0.086
1932.0      6.279    0.009     303.069    0.085
1933.0      6.280    0.009     303.104    0.084
1934.0      6.281    0.009     303.139    0.083
1935.0      6.281    0.008     303.173    0.082
1936.0      6.282    0.008     303.208    0.081
1937.0      6.283    0.008     303.242    0.080
1938.0      6.283    0.008     303.277    0.079
1939.0      6.284    0.008     303.311    0.078
1940.0      6.285    0.008     303.346    0.077
1941.0      6.285    0.008     303.380    0.076
1942.0      6.286    0.008     303.415    0.075
1943.0      6.287    0.008     303.449    0.073
1944.0      6.287    0.008     303.484    0.072
1945.0      6.288    0.007     303.518    0.071
1946.0      6.289    0.007     303.553    0.070
1947.0      6.290    0.007     303.587    0.069
1948.0      6.290    0.007     303.622    0.068
1949.0      6.291    0.007     303.656    0.067
1950.0      6.292    0.007     303.691    0.066
1951.0      6.292    0.007     303.725    0.065
1952.0      6.293    0.007     303.759    0.064
1953.0      6.294    0.007     303.794    0.063
1954.0      6.295    0.007     303.828    0.062
1955.0      6.295    0.006     303.863    0.061
1956.0      6.296    0.006     303.897    0.060
1957.0      6.297    0.006     303.931    0.059
1958.0      6.298    0.006     303.966    0.058
1959.0      6.298    0.006     304.000    0.057
1960.0      6.299    0.006     304.035    0.056
1961.0      6.300    0.006     304.069    0.055
1962.0      6.301    0.006     304.103    0.054
1963.0      6.301    0.006     304.138    0.053
1964.0      6.302    0.005     304.172    0.052
1965.0      6.303    0.005     304.206    0.051
1966.0      6.304    0.005     304.241    0.050
1967.0      6.304    0.005     304.275    0.049
1968.0      6.305    0.005     304.309    0.048
1969.0      6.306    0.005     304.343    0.047
1970.0      6.307    0.005     304.378    0.046
1971.0      6.307    0.005     304.412    0.045
1972.0      6.308    0.005     304.446    0.044
1973.0      6.309    0.005     304.480    0.043
1974.0      6.310    0.004     304.515    0.042
1975.0      6.310    0.004     304.549    0.041
1976.0      6.311    0.004     304.583    0.040
1977.0      6.312    0.004     304.617    0.039
1978.0      6.313    0.004     304.652    0.038
1979.0      6.314    0.004     304.686    0.037
1980.0      6.314    0.004     304.720    0.036
1981.0      6.315    0.004     304.754    0.035
1982.0      6.316    0.004     304.788    0.034
1983.0      6.317    0.003     304.823    0.033
1984.0      6.318    0.003     304.857    0.032
1985.0      6.318    0.003     304.891    0.031
1986.0      6.319    0.003     304.925    0.030
1987.0      6.320    0.003     304.959    0.029
1988.0      6.321    0.003     304.993    0.028
1989.0      6.322    0.003     305.027    0.027
1990.0      6.322    0.003     305.062    0.026
1991.0      6.323    0.003     305.096    0.025
1992.0      6.324    0.003     305.130    0.024
1993.0      6.325    0.002     305.164    0.023
1994.0      6.326    0.002     305.198    0.022
1995.0      6.326    0.002     305.232    0.021
1996.0      6.327    0.002     305.266    0.020
1997.0      6.328    0.002     305.300    0.019
1998.0      6.329    0.002     305.334    0.018
1999.0      6.330    0.002     305.368    0.017
2000.0      6.331    0.002     305.402    0.016
2001.0      6.331    0.002     305.436    0.015
2002.0      6.332    0.001     305.470    0.014
2003.0      6.333    0.001     305.504    0.013
2004.0      6.334    0.001     305.538    0.012
2005.0      6.335    0.001     305.572    0.011
2006.0      6.336    0.001     305.606    0.010
2007.0      6.336    0.001     305.640    0.009
2008.0      6.337    0.001     305.674    0.008
2009.0      6.338    0.001     305.708    0.007
2010.0      6.339    0.001     305.742    0.006
2011.0      6.340    0.001     305.776    0.005
2012.0      6.341    0.000     305.810    0.004
2013.0      6.342    0.000     305.844    0.003
2014.0      6.342    0.000     305.877    0.002
2015.0      6.343    0.000     305.911    0.001
2016.0      6.344    0.000     305.945    0.001
2017.0      6.345    0.000     305.979    0.001
2018.0      6.346    0.000     306.013    0.002
2019.0      6.347    0.000     306.047    0.003
2020.0      6.348    0.000     306.081    0.004
2021.0      6.349    0.001     306.114    0.005
2022.0      6.349    0.001     306.148    0.006
2023.0      6.350    0.001     306.182    0.007
2024.0      6.351    0.001     306.216    0.008
2025.0      6.352    0.001     306.250    0.009
2026.0      6.353    0.001     306.283    0.010
2027.0      6.354    0.001     306.317    0.011
2028.0      6.355    0.001     306.351    0.012
2029.0      6.356    0.001     306.385    0.013
2030.0      6.357    0.001     306.419    0.014
2031.0      6.357    0.002     306.452    0.015
2032.0      6.358    0.002     306.486    0.016
2033.0      6.359    0.002     306.520    0.017
2034.0      6.360    0.002     306.553    0.018
2035.0      6.361    0.002     306.587    0.019
2036.0      6.362    0.002     306.621    0.020
2037.0      6.363    0.002     306.654    0.021
2038.0      6.364    0.002     306.688    0.022
2039.0      6.365    0.002     306.722    0.023
2040.0      6.366    0.003     306.755    0.024
2041.0      6.367    0.003     306.789    0.025
2042.0      6.368    0.003     306.823    0.026
2043.0      6.368    0.003     306.856    0.027
2044.0      6.369    0.003     306.890    0.028
2045.0      6.370    0.003     306.924    0.029
2046.0      6.371    0.003     306.957    0.030
2047.0      6.372    0.003     306.991    0.030
2048.0      6.373    0.003     307.024    0.031
2049.0      6.374    0.004     307.058    0.032
2050.0      6.375    0.004     307.091    0.033
2051.0      6.376    0.004     307.125    0.034
2052.0      6.377    0.004     307.158    0.035
2053.0      6.378    0.004     307.192    0.036
2054.0      6.379    0.004     307.225    0.037
2055.0      6.380    0.004     307.259    0.038
2056.0      6.381    0.004     307.292    0.039
2057.0      6.382    0.004     307.326    0.040
2058.0      6.383    0.004     307.359    0.041
2059.0      6.384    0.005     307.393    0.042
2060.0      6.385    0.005     307.426    0.043
2061.0      6.386    0.005     307.460    0.044
2062.0      6.386    0.005     307.493    0.045
2063.0      6.387    0.005     307.527    0.046
2064.0      6.388    0.005     307.560    0.047
2065.0      6.389    0.005     307.593    0.048
2066.0      6.390    0.005     307.627    0.049
2067.0      6.391    0.005     307.660    0.050
2068.0      6.392    0.006     307.694    0.051
2069.0      6.393    0.006     307.727    0.052
2070.0      6.394    0.006     307.760    0.053
2071.0      6.395    0.006     307.794    0.054
2072.0      6.396    0.006     307.827    0.055
2073.0      6.397    0.006     307.860    0.056
2074.0      6.398    0.006     307.894    0.057
2075.0      6.399    0.006     307.927    0.058
2076.0      6.400    0.006     307.960    0.059
2077.0      6.401    0.007     307.993    0.060
2078.0      6.402    0.007     308.027    0.061
2079.0      6.403    0.007     308.060    0.061
2080.0      6.404    0.007     308.093    0.062
2081.0      6.405    0.007     308.126    0.063
2082.0      6.406    0.007     308.160    0.064
2083.0      6.407    0.007     308.193    0.065
2084.0      6.408    0.007     308.226    0.066
2085.0      6.409    0.007     308.259    0.067
2086.0      6.410    0.007     308.292    0.068
2087.0      6.411    0.008     308.326    0.069
2088.0      6.412    0.008     308.359    0.070
2089.0      6.413    0.008     308.392    0.071
2090.0      6.414    0.008     308.425    0.072
2091.0      6.416    0.008     308.458    0.073
2092.0      6.417    0.008     308.491    0.074
2093.0      6.418    0.008     308.524    0.075
2094.0      6.419    0.008     308.557    0.076
2095.0      6.420    0.008     308.591    0.077
2096.0      6.421    0.009     308.624    0.078
2097.0      6.422    0.009     308.657    0.079
2098.0      6.423    0.009     308.690    0.080
2099.0      6.424    0.009     308.723    0.081
2100.0      6.425    0.009     308.756    0.082




Measurements for STF 1965
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
15394+3638  STF 1965          1    6.32"    --       B2025.468  HWI  120/900 APO   ASI678MM  CAL

-- Image of STF-1965-taken with Equinox 120/900 APO --


WDS record for STF 1965
wds_id                       : 15394+3638
discoverer_code              : STF
discoverer_number            : 1965
discoverer_components        : 
date_first                   : 1779
date_last                    : 2024
num_of_obs                   : 346
pa_first                     : 296
pa_last                      : 306
sep_first                    : 5.5
sep_last                     : 6.3
mag_primary                  : 4.96
mag_secondary                : 5.91
spectral_type                : B7V+B9V
primary_proper_motion_RA     : -17
primary_proper_motion_DEC    : -4
secondary_proper_motion_RA   : -15
secondary_proper_motion_DEC  : -7
dm_number                    : +37 2665
notes                        : N
precise_coordinate           : 153922.68+363809.0
                             : 15:39:22.68 +36:38:09.0

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS



Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1374695306328813568
source_id = 1374695306328813568
random_index = 1712389563
ref_epoch = 2016.0
ra = 234.84438427599244
ra_error = 0.066066846
dec = 36.63577788094199
dec_error = 0.076981604
parallax = 6.425871677276062
parallax_error = 0.09597933
parallax_over_error = 66.95058
pm = 17.212988
pmra = -15.50989053913835
pmra_error = 0.09057239
pmdec = -7.465267958752845
pmdec_error = 0.11207384
ra_dec_corr = 0.14198038
ra_parallax_corr = -0.0957413
ra_pmra_corr = 0.0026587103
ra_pmdec_corr = -0.05059084
dec_parallax_corr = -0.13419163
dec_pmra_corr = -0.10870716
dec_pmdec_corr = -0.28724864
parallax_pmra_corr = 0.031407572
parallax_pmdec_corr = 0.15192577
pmra_pmdec_corr = 0.36957684
astrometric_n_obs_al = 291
astrometric_n_obs_ac = 291
astrometric_n_good_obs_al = 284
astrometric_n_bad_obs_al = 7
astrometric_gof_al = 2.4970794
astrometric_chi2_al = 28337.814
astrometric_excess_noise = 0.8023428
astrometric_excess_noise_sig = 1018.665
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.7994769
astrometric_matched_transits = 33
visibility_periods_used = 20
astrometric_sigma5d_max = 0.1696144
matched_transits = 35
new_matched_transits = 13
matched_transits_removed = 17
ipd_gof_harmonic_amplitude = 0.129032
ipd_gof_harmonic_phase = 56.89235
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.106315
duplicated_source = false
phot_g_n_obs = 282
phot_g_mean_flux = 190874544.36699966
phot_g_mean_flux_error = 155717.17
phot_g_mean_flux_over_error = 1225.7771
phot_g_mean_mag = 4.985497
phot_bp_n_obs = 31
phot_bp_mean_flux = 144816408.9045126
phot_bp_mean_flux_error = 126028.69
phot_bp_mean_flux_over_error = 1149.075
phot_bp_mean_mag = 4.9364977
phot_rp_n_obs = 29
phot_rp_mean_flux = 73849350.75429793
phot_rp_mean_flux_error = 127334.59
phot_rp_mean_flux_over_error = 579.963
phot_rp_mean_mag = 5.0770288
phot_bp_rp_excess_factor = 1.1455994
phot_bp_n_contaminated_transits = 1
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = -0.14053106
bp_g = -0.04899931
g_rp = -0.09153175
phot_variable_flag = NOT_AVAILABLE
l = 58.69775758503363
b = 53.412971106414275
ecl_lon = 218.2746216329549
ecl_lat = 53.945341133030574
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 = true
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.02173065e-13
classprob_dsc_combmod_galaxy = 5.1034936e-13
classprob_dsc_combmod_star = 0.9999997
teff_gspphot = 12157.055
teff_gspphot_lower = 12119.086
teff_gspphot_upper = 12191.367
logg_gspphot = 3.7614
logg_gspphot_lower = 3.752
logg_gspphot_upper = 3.772
mh_gspphot = 0.2344
mh_gspphot_lower = 0.1828
mh_gspphot_upper = 0.2943
distance_gspphot = 157.8719
distance_gspphot_lower = 155.528
distance_gspphot_upper = 159.7918
azero_gspphot = 0.0164
azero_gspphot_lower = 0.0139
azero_gspphot_upper = 0.0187
ag_gspphot = 0.0161
ag_gspphot_lower = 0.0137
ag_gspphot_upper = 0.0184
ebpminrp_gspphot = 0.0086
ebpminrp_gspphot_lower = 0.0073
ebpminrp_gspphot_upper = 0.0099
libname_gspphot = A
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1374695306328813696
source_id = 1374695306328813696
random_index = 1361289303
ref_epoch = 2016.0
ra = 234.84260630488228
ra_error = 0.027581114
dec = 36.63681234775629
dec_error = 0.03409098
parallax = 6.406216533139849
parallax_error = 0.04156142
parallax_over_error = 154.13853
pm = 14.548928
pmra = -14.011124047737166
pmra_error = 0.034096584
pmdec = -3.9191460598859673
pmdec_error = 0.045929357
ra_dec_corr = 0.21245071
ra_parallax_corr = 0.055816416
ra_pmra_corr = -0.004346729
ra_pmdec_corr = -0.17882033
dec_parallax_corr = -0.10687147
dec_pmra_corr = -0.16146812
dec_pmdec_corr = -0.2608535
parallax_pmra_corr = -0.06822226
parallax_pmdec_corr = 0.12108215
pmra_pmdec_corr = 0.18591534
astrometric_n_obs_al = 335
astrometric_n_obs_ac = 335
astrometric_n_good_obs_al = 333
astrometric_n_bad_obs_al = 2
astrometric_gof_al = -2.5070593
astrometric_chi2_al = 5923.0923
astrometric_excess_noise = 0.3580076
astrometric_excess_noise_sig = 196.30666
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.8067333
astrometric_matched_transits = 38
visibility_periods_used = 23
astrometric_sigma5d_max = 0.06594717
matched_transits = 40
new_matched_transits = 13
matched_transits_removed = 9
ipd_gof_harmonic_amplitude = 0.026071375
ipd_gof_harmonic_phase = 27.882484
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.9027481
duplicated_source = false
phot_g_n_obs = 346
phot_g_mean_flux = 76696102.66159394
phot_g_mean_flux_error = 57421.12
phot_g_mean_flux_over_error = 1335.6776
phot_g_mean_mag = 5.975434
phot_bp_n_obs = 37
phot_bp_mean_flux = 59333456.87887561
phot_bp_mean_flux_error = 131639.81
phot_bp_mean_flux_over_error = 450.72577
phot_bp_mean_mag = 5.905293
phot_rp_n_obs = 35
phot_rp_mean_flux = 29804924.68612642
phot_rp_mean_flux_error = 101467.17
phot_rp_mean_flux_over_error = 293.7396
phot_rp_mean_mag = 6.0621753
phot_bp_rp_excess_factor = 1.1622283
phot_bp_n_contaminated_transits = 5
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 5
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = -0.15688229
bp_g = -0.07014084
g_rp = -0.08674145
phot_variable_flag = VARIABLE
l = 58.6996070876435
b = 53.41434603409791
ecl_lon = 218.2717046156608
ecl_lat = 53.94573882346988
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 = true
has_epoch_rv = false
has_mcmc_gspphot = true
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.02199086e-13
classprob_dsc_combmod_galaxy = 5.104793e-13
classprob_dsc_combmod_star = 0.99999964
teff_gspphot = 13291.975
teff_gspphot_lower = 13217.913
teff_gspphot_upper = 13349.776
logg_gspphot = 4.0429
logg_gspphot_lower = 4.0272
logg_gspphot_upper = 4.0568
mh_gspphot = -0.9949
mh_gspphot_lower = -1.3641
mh_gspphot_upper = -0.8058
distance_gspphot = 157.2414
distance_gspphot_lower = 156.0184
distance_gspphot_upper = 158.4815
azero_gspphot = 0.0018
azero_gspphot_lower = 0.0006
azero_gspphot_upper = 0.0033
ag_gspphot = 0.0017
ag_gspphot_lower = 0.0006
ag_gspphot_upper = 0.0033
ebpminrp_gspphot = 0.0009
ebpminrp_gspphot_lower = 0.0003
ebpminrp_gspphot_upper = 0.0018
libname_gspphot = A
radial_velocity = -19.4
radial_velocity_error = 2.0
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1374695306328813568
classprob_dsc_combmod_quasar = 1.02173065e-13
classprob_dsc_combmod_galaxy = 5.1034936e-13
classprob_dsc_combmod_star = 0.9999997
classprob_dsc_combmod_whitedwarf = 2.9592786e-07
classprob_dsc_combmod_binarystar = 1.00144906e-10
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9985244
classprob_dsc_specmod_whitedwarf = 0.0014755481
classprob_dsc_specmod_binarystar = 0.0
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 12157.055
teff_gspphot_lower = 12119.086
teff_gspphot_upper = 12191.367
logg_gspphot = 3.7614
logg_gspphot_lower = 3.752
logg_gspphot_upper = 3.772
mh_gspphot = 0.2344
mh_gspphot_lower = 0.1828
mh_gspphot_upper = 0.2943
distance_gspphot = 157.8719
distance_gspphot_lower = 155.528
distance_gspphot_upper = 159.7918
azero_gspphot = 0.0164
azero_gspphot_lower = 0.0139
azero_gspphot_upper = 0.0187
ag_gspphot = 0.0161
ag_gspphot_lower = 0.0137
ag_gspphot_upper = 0.0184
abp_gspphot = 0.0188
abp_gspphot_lower = 0.016
abp_gspphot_upper = 0.0214
arp_gspphot = 0.0102
arp_gspphot_lower = 0.0086
arp_gspphot_upper = 0.0116
ebpminrp_gspphot = 0.0086
ebpminrp_gspphot_lower = 0.0073
ebpminrp_gspphot_upper = 0.0099
mg_gspphot = -1.0296
mg_gspphot_lower = -1.0561
mg_gspphot_upper = -0.9976
radius_gspphot = 4.3082
radius_gspphot_lower = 4.2476
radius_gspphot_upper = 4.3623
logposterior_gspphot = -2464.8784
mcmcaccept_gspphot = 0.5491536
libname_gspphot = A
ew_espels_halpha = 0.18872137
ew_espels_halpha_uncertainty = 0.028239282
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.329561
flags_esphs = 91
spectraltype_esphs = B
radius_flame = 4.3417144
radius_flame_lower = 4.233947
radius_flame_upper = 4.44884
lum_flame = 370.9552
lum_flame_lower = 360.0488
lum_flame_upper = 381.6754
mass_flame = 3.890774
mass_flame_lower = 3.8426285
mass_flame_upper = 3.9386902
flags_flame = 00
evolstage_flame = 273
gravredshift_flame = 0.5928088
gravredshift_flame_lower = 0.58698297
gravredshift_flame_upper = 0.59861904
bc_flame = -0.7031511
mh_msc = -0.10001067
mh_msc_upper = -0.099921115
mh_msc_lower = -0.10011282
azero_msc = 0.09996852
azero_msc_upper = 0.10015084
azero_msc_lower = 0.09972474
distance_msc = 65.682465
distance_msc_upper = 65.8893
distance_msc_lower = 65.37782
teff_msc1 = 7600.0293
teff_msc1_upper = 7600.7812
teff_msc1_lower = 7599.6973
teff_msc2 = 7599.9775
teff_msc2_upper = 7600.368
teff_msc2_lower = 7599.328
logg_msc1 = 3.8997943
logg_msc1_upper = 3.9006097
logg_msc1_lower = 3.8985999
logg_msc2 = 3.8999264
logg_msc2_upper = 3.9003794
logg_msc2_lower = 3.8993566
ag_msc = 0.09113458
ag_msc_upper = 0.09129581
ag_msc_lower = 0.09090838
logposterior_msc = -348420.9
mcmcaccept_msc = 0.33675417
mcmcdrift_msc = 1.87052
flags_msc = 1
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1374695306328813696
classprob_dsc_combmod_quasar = 1.02199086e-13
classprob_dsc_combmod_galaxy = 5.104793e-13
classprob_dsc_combmod_star = 0.99999964
classprob_dsc_combmod_whitedwarf = 3.470376e-07
classprob_dsc_combmod_binarystar = 1.00170414e-10
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9982701
classprob_dsc_specmod_whitedwarf = 0.0017299515
classprob_dsc_specmod_binarystar = 0.0
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 13291.975
teff_gspphot_lower = 13217.913
teff_gspphot_upper = 13349.776
logg_gspphot = 4.0429
logg_gspphot_lower = 4.0272
logg_gspphot_upper = 4.0568
mh_gspphot = -0.9949
mh_gspphot_lower = -1.3641
mh_gspphot_upper = -0.8058
distance_gspphot = 157.2414
distance_gspphot_lower = 156.0184
distance_gspphot_upper = 158.4815
azero_gspphot = 0.0018
azero_gspphot_lower = 0.0006
azero_gspphot_upper = 0.0033
ag_gspphot = 0.0017
ag_gspphot_lower = 0.0006
ag_gspphot_upper = 0.0033
abp_gspphot = 0.002
abp_gspphot_lower = 0.0007
abp_gspphot_upper = 0.0038
arp_gspphot = 0.0011
arp_gspphot_lower = 0.0003
arp_gspphot_upper = 0.0021
ebpminrp_gspphot = 0.0009
ebpminrp_gspphot_lower = 0.0003
ebpminrp_gspphot_upper = 0.0018
mg_gspphot = -0.039
mg_gspphot_lower = -0.0557
mg_gspphot_upper = -0.0219
radius_gspphot = 2.6275
radius_gspphot_lower = 2.6072
radius_gspphot_upper = 2.6469
logposterior_gspphot = -1890.1677
mcmcaccept_gspphot = 0.46266457
libname_gspphot = A
ew_espels_halpha = 0.19580415
ew_espels_halpha_uncertainty = 0.030211655
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.316161
flags_esphs = 91
spectraltype_esphs = B
radius_flame = 2.6307037
radius_flame_lower = 2.5717733
radius_flame_upper = 2.6889527
lum_flame = 194.46762
lum_flame_lower = 190.54335
lum_flame_upper = 198.16286
mass_flame = 3.6002762
mass_flame_lower = 3.5537703
mass_flame_upper = 3.6446924
flags_flame = 00
evolstage_flame = 180
gravredshift_flame = 0.6849115
gravredshift_flame_lower = 0.6580522
gravredshift_flame_upper = 0.70322424
bc_flame = -0.99972826
mh_msc = -0.10000871
mh_msc_upper = -0.099891886
mh_msc_lower = -0.10017419
azero_msc = 0.09981093
azero_msc_upper = 0.10112044
azero_msc_lower = 0.09887737
distance_msc = 103.114975
distance_msc_upper = 103.58472
distance_msc_lower = 102.41078
teff_msc1 = 7600.092
teff_msc1_upper = 7600.9707
teff_msc1_lower = 7599.423
teff_msc2 = 7599.908
teff_msc2_upper = 7600.953
teff_msc2_lower = 7598.116
logg_msc1 = 3.8995361
logg_msc1_upper = 3.9019275
logg_msc1_lower = 3.8965797
logg_msc2 = 3.899756
logg_msc2_upper = 3.9011602
logg_msc2_lower = 3.8984256
ag_msc = 0.09099075
ag_msc_upper = 0.09218851
ag_msc_lower = 0.09014109
logposterior_msc = -349477.28
mcmcaccept_msc = 0.33732697
mcmcdrift_msc = 2.0002115
flags_msc = 1




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. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2591 $)
Report created: 2026-09-09 08:37:05 +0200



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