☰Double Star Calculator - Results


STF 1685 AB - Astrometric and kinematic properties
 
Gaia Source ID - Star A          : 3941893122816644224     Simbad
Gaia Source ID - Star B          : 3941893122816643840     Simbad

Observation Epoch                :  J2025.321  /  2025-04-28
Angular Separation               :     15.934  ±   0.0028  arcsec
Position Angle                   :     201.53  ±   0.0089  degree

Star A/B Epoch                   :  J2016.000  /   J2016.000
Angular Separation               :     15.930  ±   0.0002  arcsec
Position Angle                   :     201.56  ±   0.0006  degree 
Projected Separation             :       1770              au
Spatial Separation               :      11.97  ±     3.41  pc
  Spatial Separation             :      39.02  ±    11.13  ly
Parallax Significance            :       3.90              σ
3D Space Velocity Angle          :       5.11  ±     7.27  degree
ΔProper Motion Angle             :       0.42  ±     0.22  degree
ΔTotal Proper Motion             :       0.64  ±     0.26  mas/yr
ΔTangential Velocity             :       4.84  ±     1.30  km/s
ΔRadial Velocity                 :       6.09  ±     6.65  km/s
ΔSpeed (scalar)                  :       6.69  ±     2.89  km/s
ΔRelative Velocity (3D)          :       7.78  ±     5.26  km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
 
Gaia Source ID                   : 3941893122816644224           VizieR

Epoch                            :  J2016.000
Right Ascension (RA)             :     12h 51m 54.72s
Declination (Dec)                :     19° 10' 20.04"
Distance                         :     117.11  ±   3.40          pc
Distance                         :     381.97  ±  11.09          ly
Magnitude (G-band)               :       7.27                    mag
Absolute Magnitude               :       1.93  ±   0.06          mag
Stellar Extinction               :       0.00  ±  <0.01          mag
Spectral Type (BP/RP)            :          A
Bolometric correction            :       0.00                    mag
Luminosity                       :      13.36  + 0.80 / − 0.75   L☉
  Log(Luminosity)                :    1.12587
Effective temperature (Teff)     :    7240.64  +13.68 / -10.65   K
  Log(Teff)                      :    3.85978
Mass estimation                  :       1.88                    M☉
RUWE                             :       9.33
Position Angle of Proper Motion  :     276.84  ±   0.22          degree
Total Proper Motion              :      79.64  ±   0.26          mas/yr
Tangential Velocity              :      44.22  ±   1.29          km/s
Radial Velocity (Gaia)           :     -19.04  ±   6.64          km/s
Space Velocity                   :      48.14  ±   2.88          km/s

Star A - Selected astrophysical parameters
 
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.26
Radius from GSP-Phot Aeneas      :       2.54  ±   0.15          R☉
Spectral type from ESP-ELS       :          A
Radius of the star from FLAME    :       2.22  ±   0.07          R☉
Bolometric correction            :       0.09                    mag
Luminosity of the star (FLAME)   :      12.26  ±   0.64          L☉
Mass of the star from FLAME      :       1.72  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        241      Main Sequence (early)

Star A - Double Star Quality Metrics
Parallax over error :     34.452 : very good
RUWE                :      9.330 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      7.272 : G > 3 mag, photometry reliable
Excess noise        :      1.669 : Poor fit
  Significance      :   2238.238 :   Possible binary or jitter
BP-RP excess factor :      1.174 : photometry consistent
Visibility periods  :         16 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.050 : unobtrusive (single star source)


Star B - Stellar Data
 
Gaia Source ID                   : 3941893122816643840           VizieR

Epoch                            :  J2016.000
Right Ascension (RA)             :     12h 51m 54.31s
Declination (Dec)                :     19° 10' 5.22"
Distance                         :     105.15  ±   0.31          pc
Distance                         :     342.94  ±   1.01          ly
Magnitude (G-band)               :       7.72                    mag
Absolute Magnitude               :       2.61  ±   0.01          mag
Stellar Extinction               :       0.00  ±  <0.01          mag
Spectral Type (BP/RP)            :          F
Bolometric correction            :      -0.02                    mag
Luminosity                       :       7.23  + 0.04 / − 0.04   L☉
  Log(Luminosity)                :    0.85930
Effective temperature (Teff)     :    6000.94  + 2.23 / - 1.65   K
  Log(Teff)                      :    3.77822
Mass estimation                  :       1.64                    M☉
RUWE                             :       0.92
Position Angle of Proper Motion  :     276.42  ±   0.02          degree
Total Proper Motion              :      79.00  ±   0.03          mas/yr
Tangential Velocity              :      39.38  ±   0.12          km/s
Radial Velocity (Gaia)           :     -12.95  ±   0.21          km/s
Space Velocity                   :      41.45  ±   0.13          km/s

Star B - Selected astrophysical parameters
 
DSC-Combmod binary star          :       1.00
DSC-Specmod binary star          :       1.00
Radius from GSP-Phot Aeneas      :       2.35  ±   0.01          R☉
Spectral type from ESP-ELS       :          F
Radius of the star from FLAME    :       2.37  ±   0.05          R☉
Bolometric correction            :       0.08                    mag
Luminosity of the star (FLAME)   :       6.58  ±   0.04          L☉
Mass of the star from FLAME      :       1.39  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        401      Main Sequence (late)

Star B - Double Star Quality Metrics
Parallax over error :    339.288 : very good
RUWE                :      0.920 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      7.722 : G > 3 mag, photometry reliable
Excess noise        :      0.109 : Very good fit
  Significance      :      7.076 :   Reliable single-star astrometry
BP-RP excess factor :      1.195 : photometry consistent
Visibility periods  :         14 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.017 : 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)          :        0.01     (CPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.22     (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               :        1770     au
Spatial Separation                 :       11.97  ±     3.41  pc
  1-Sigma Range                    : [      8.55,      15.38] pc
  Significance                     :        3.90     σ
  Note: 3D distance is plausible but has sig. uncertainty.

3D spatial distance probabilities :
===================================
P(D-3D <=       3541 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)          :        0.01     (CPM)
ΔRelative Velocity (3D)            :        7.78  ±  5.26   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

Metallicity (Experimental / Not validated)

Metallicity (Gaia DR3, GSP-Phot)   :
===================================
Metallicity Star A - [M/H]         :     -0.0163  ± 0.0134 dex
  Metallicity reliability factor A :        1.00
Metallicity Star B - [M/H]         :     -0.2854  ± 0.0061 dex
  Metallicity reliability factor B :        1.00
Metallicity Difference             :      0.2691           dex
Combined uncertainty               :      0.2105           dex
Sigma-Distance (Z-Score)           :      1.28 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) :  9.33 : Very high
RUWE probability for a binary system (Star B) :  0.92 : 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     15.885    0.035     201.884    0.111
1901.0     15.885    0.034     201.881    0.110
1902.0     15.886    0.034     201.879    0.109
1903.0     15.886    0.034     201.876    0.108
1904.0     15.886    0.033     201.873    0.107
1905.0     15.887    0.033     201.870    0.106
1906.0     15.887    0.033     201.867    0.105
1907.0     15.888    0.033     201.865    0.104
1908.0     15.888    0.032     201.862    0.103
1909.0     15.888    0.032     201.859    0.102
1910.0     15.889    0.032     201.856    0.101
1911.0     15.889    0.031     201.853    0.101
1912.0     15.890    0.031     201.851    0.100
1913.0     15.890    0.031     201.848    0.099
1914.0     15.890    0.030     201.845    0.098
1915.0     15.891    0.030     201.842    0.097
1916.0     15.891    0.030     201.839    0.096
1917.0     15.891    0.030     201.837    0.095
1918.0     15.892    0.029     201.834    0.094
1919.0     15.892    0.029     201.831    0.093
1920.0     15.893    0.029     201.828    0.092
1921.0     15.893    0.028     201.825    0.091
1922.0     15.893    0.028     201.823    0.090
1923.0     15.894    0.028     201.820    0.089
1924.0     15.894    0.027     201.817    0.088
1925.0     15.895    0.027     201.814    0.087
1926.0     15.895    0.027     201.811    0.086
1927.0     15.895    0.027     201.809    0.085
1928.0     15.896    0.026     201.806    0.084
1929.0     15.896    0.026     201.803    0.083
1930.0     15.897    0.026     201.800    0.082
1931.0     15.897    0.025     201.797    0.081
1932.0     15.897    0.025     201.795    0.080
1933.0     15.898    0.025     201.792    0.079
1934.0     15.898    0.024     201.789    0.078
1935.0     15.899    0.024     201.786    0.077
1936.0     15.899    0.024     201.783    0.077
1937.0     15.899    0.024     201.781    0.076
1938.0     15.900    0.023     201.778    0.075
1939.0     15.900    0.023     201.775    0.074
1940.0     15.900    0.023     201.772    0.073
1941.0     15.901    0.022     201.769    0.072
1942.0     15.901    0.022     201.767    0.071
1943.0     15.902    0.022     201.764    0.070
1944.0     15.902    0.022     201.761    0.069
1945.0     15.902    0.021     201.758    0.068
1946.0     15.903    0.021     201.756    0.067
1947.0     15.903    0.021     201.753    0.066
1948.0     15.904    0.020     201.750    0.065
1949.0     15.904    0.020     201.747    0.064
1950.0     15.904    0.020     201.744    0.063
1951.0     15.905    0.019     201.742    0.062
1952.0     15.905    0.019     201.739    0.061
1953.0     15.906    0.019     201.736    0.060
1954.0     15.906    0.019     201.733    0.059
1955.0     15.906    0.018     201.730    0.058
1956.0     15.907    0.018     201.728    0.057
1957.0     15.907    0.018     201.725    0.056
1958.0     15.907    0.017     201.722    0.055
1959.0     15.908    0.017     201.719    0.054
1960.0     15.908    0.017     201.716    0.054
1961.0     15.909    0.016     201.714    0.053
1962.0     15.909    0.016     201.711    0.052
1963.0     15.909    0.016     201.708    0.051
1964.0     15.910    0.016     201.705    0.050
1965.0     15.910    0.015     201.703    0.049
1966.0     15.911    0.015     201.700    0.048
1967.0     15.911    0.015     201.697    0.047
1968.0     15.911    0.014     201.694    0.046
1969.0     15.912    0.014     201.691    0.045
1970.0     15.912    0.014     201.689    0.044
1971.0     15.913    0.013     201.686    0.043
1972.0     15.913    0.013     201.683    0.042
1973.0     15.913    0.013     201.680    0.041
1974.0     15.914    0.013     201.677    0.040
1975.0     15.914    0.012     201.675    0.039
1976.0     15.915    0.012     201.672    0.038
1977.0     15.915    0.012     201.669    0.037
1978.0     15.915    0.011     201.666    0.036
1979.0     15.916    0.011     201.663    0.035
1980.0     15.916    0.011     201.661    0.034
1981.0     15.916    0.010     201.658    0.033
1982.0     15.917    0.010     201.655    0.032
1983.0     15.917    0.010     201.652    0.032
1984.0     15.918    0.010     201.650    0.031
1985.0     15.918    0.009     201.647    0.030
1986.0     15.918    0.009     201.644    0.029
1987.0     15.919    0.009     201.641    0.028
1988.0     15.919    0.008     201.638    0.027
1989.0     15.920    0.008     201.636    0.026
1990.0     15.920    0.008     201.633    0.025
1991.0     15.920    0.007     201.630    0.024
1992.0     15.921    0.007     201.627    0.023
1993.0     15.921    0.007     201.624    0.022
1994.0     15.922    0.007     201.622    0.021
1995.0     15.922    0.006     201.619    0.020
1996.0     15.922    0.006     201.616    0.019
1997.0     15.923    0.006     201.613    0.018
1998.0     15.923    0.005     201.611    0.017
1999.0     15.924    0.005     201.608    0.016
2000.0     15.924    0.005     201.605    0.015
2001.0     15.924    0.004     201.602    0.014
2002.0     15.925    0.004     201.599    0.013
2003.0     15.925    0.004     201.597    0.012
2004.0     15.926    0.004     201.594    0.011
2005.0     15.926    0.003     201.591    0.011
2006.0     15.926    0.003     201.588    0.010
2007.0     15.927    0.003     201.585    0.009
2008.0     15.927    0.002     201.583    0.008
2009.0     15.927    0.002     201.580    0.007
2010.0     15.928    0.002     201.577    0.006
2011.0     15.928    0.002     201.574    0.005
2012.0     15.929    0.001     201.572    0.004
2013.0     15.929    0.001     201.569    0.003
2014.0     15.929    0.001     201.566    0.002
2015.0     15.930    0.000     201.563    0.001
2016.0     15.930    0.000     201.560    0.001
2017.0     15.931    0.000     201.558    0.001
2018.0     15.931    0.001     201.555    0.002
2019.0     15.931    0.001     201.552    0.003
2020.0     15.932    0.001     201.549    0.004
2021.0     15.932    0.002     201.547    0.005
2022.0     15.933    0.002     201.544    0.006
2023.0     15.933    0.002     201.541    0.007
2024.0     15.933    0.002     201.538    0.008
2025.0     15.934    0.003     201.535    0.009
2026.0     15.934    0.003     201.533    0.010
2027.0     15.935    0.003     201.530    0.011
2028.0     15.935    0.004     201.527    0.011
2029.0     15.935    0.004     201.524    0.012
2030.0     15.936    0.004     201.522    0.013
2031.0     15.936    0.004     201.519    0.014
2032.0     15.937    0.005     201.516    0.015
2033.0     15.937    0.005     201.513    0.016
2034.0     15.937    0.005     201.510    0.017
2035.0     15.938    0.006     201.508    0.018
2036.0     15.938    0.006     201.505    0.019
2037.0     15.938    0.006     201.502    0.020
2038.0     15.939    0.007     201.499    0.021
2039.0     15.939    0.007     201.496    0.022
2040.0     15.940    0.007     201.494    0.023
2041.0     15.940    0.007     201.491    0.024
2042.0     15.940    0.008     201.488    0.025
2043.0     15.941    0.008     201.485    0.026
2044.0     15.941    0.008     201.483    0.027
2045.0     15.942    0.009     201.480    0.028
2046.0     15.942    0.009     201.477    0.029
2047.0     15.942    0.009     201.474    0.030
2048.0     15.943    0.010     201.471    0.031
2049.0     15.943    0.010     201.469    0.031
2050.0     15.944    0.010     201.466    0.032
2051.0     15.944    0.010     201.463    0.033
2052.0     15.944    0.011     201.460    0.034
2053.0     15.945    0.011     201.458    0.035
2054.0     15.945    0.011     201.455    0.036
2055.0     15.946    0.012     201.452    0.037
2056.0     15.946    0.012     201.449    0.038
2057.0     15.946    0.012     201.446    0.039
2058.0     15.947    0.013     201.444    0.040
2059.0     15.947    0.013     201.441    0.041
2060.0     15.948    0.013     201.438    0.042
2061.0     15.948    0.013     201.435    0.043
2062.0     15.948    0.014     201.433    0.044
2063.0     15.949    0.014     201.430    0.045
2064.0     15.949    0.014     201.427    0.046
2065.0     15.950    0.015     201.424    0.047
2066.0     15.950    0.015     201.422    0.048
2067.0     15.950    0.015     201.419    0.049
2068.0     15.951    0.016     201.416    0.050
2069.0     15.951    0.016     201.413    0.050
2070.0     15.952    0.016     201.410    0.051
2071.0     15.952    0.016     201.408    0.052
2072.0     15.952    0.017     201.405    0.053
2073.0     15.953    0.017     201.402    0.054
2074.0     15.953    0.017     201.399    0.055
2075.0     15.953    0.018     201.397    0.056
2076.0     15.954    0.018     201.394    0.057
2077.0     15.954    0.018     201.391    0.058
2078.0     15.955    0.019     201.388    0.059
2079.0     15.955    0.019     201.385    0.060
2080.0     15.955    0.019     201.383    0.061
2081.0     15.956    0.019     201.380    0.062
2082.0     15.956    0.020     201.377    0.063
2083.0     15.957    0.020     201.374    0.064
2084.0     15.957    0.020     201.372    0.065
2085.0     15.957    0.021     201.369    0.066
2086.0     15.958    0.021     201.366    0.067
2087.0     15.958    0.021     201.363    0.068
2088.0     15.959    0.022     201.360    0.069
2089.0     15.959    0.022     201.358    0.069
2090.0     15.959    0.022     201.355    0.070
2091.0     15.960    0.022     201.352    0.071
2092.0     15.960    0.023     201.349    0.072
2093.0     15.961    0.023     201.347    0.073
2094.0     15.961    0.023     201.344    0.074
2095.0     15.961    0.024     201.341    0.075
2096.0     15.962    0.024     201.338    0.076
2097.0     15.962    0.024     201.336    0.077
2098.0     15.963    0.025     201.333    0.078
2099.0     15.963    0.025     201.330    0.079
2100.0     15.963    0.025     201.327    0.080



Measurements for STF 1685 AB
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
--------------------------------------------------------------------------------------------------
12519+1910  STF 1685    AB    1    15.97"   --       B2025.325  HWI  120/900 APO   ASI678MM  CAL

PA=201.53°

-- Image of STF-1685-AB-taken with Equinox 120/900 APO --


WDS record for STF 1685 AB
wds_id                       : 12519+1910
discoverer_code              : STF
discoverer_number            : 1685
discoverer_components        : AB
date_first                   : 1782
date_last                    : 2023
num_of_obs                   : 106
pa_first                     : 202
pa_last                      : 202
sep_first                    : 15.9
sep_last                     : 16.0
mag_primary                  : 7.31
mag_secondary                : 7.78
spectral_type                : Am+F8III
primary_proper_motion_RA     : -84
primary_proper_motion_DEC    : 15
secondary_proper_motion_RA   : -76
secondary_proper_motion_DEC  : 7
dm_number                    : +19 2613
notes                        : NV
precise_coordinate           : 125154.80+191019.9
                             : 12:51:54.80 +19:10:19.9

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
V: Proper motion or other technique: physical



Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 3941893122816644224
source_id = 3941893122816644224
random_index = 956397889
ref_epoch = 2016.0
ra = 192.97799407936503
ra_error = 0.1843822
dec = 19.17223249956515
dec_error = 0.15544076
parallax = 8.538799378547635
parallax_error = 0.24784619
parallax_over_error = 34.45201
pm = 79.644455
pmra = -79.07714879464658
pmra_error = 0.25723854
pmdec = 9.489151195129523
pmdec_error = 0.30307838
ra_dec_corr = -0.30825454
ra_parallax_corr = -0.42025626
ra_pmra_corr = 0.08487319
ra_pmdec_corr = -0.13375832
dec_parallax_corr = 0.11584687
dec_pmra_corr = -0.1941867
dec_pmdec_corr = 0.39981776
parallax_pmra_corr = -0.13357915
parallax_pmdec_corr = 0.031710908
pmra_pmdec_corr = -0.42131844
astrometric_n_obs_al = 266
astrometric_n_obs_ac = 266
astrometric_n_good_obs_al = 266
astrometric_n_bad_obs_al = 0
astrometric_gof_al = 117.594864
astrometric_chi2_al = 73211.92
astrometric_excess_noise = 1.6691678
astrometric_excess_noise_sig = 2238.238
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.6561944
astrometric_matched_transits = 30
visibility_periods_used = 16
astrometric_sigma5d_max = 0.4725169
matched_transits = 38
new_matched_transits = 6
matched_transits_removed = 5
ipd_gof_harmonic_amplitude = 0.049676295
ipd_gof_harmonic_phase = 116.575676
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 9.325566
duplicated_source = false
phot_g_n_obs = 320
phot_g_mean_flux = 23234203.407076567
phot_g_mean_flux_error = 5452.3945
phot_g_mean_flux_over_error = 4261.284
phot_g_mean_mag = 7.2720475
phot_bp_n_obs = 34
phot_bp_mean_flux = 14894179.759690052
phot_bp_mean_flux_error = 7524.347
phot_bp_mean_flux_over_error = 1979.4647
phot_bp_mean_mag = 7.4060006
phot_rp_n_obs = 29
phot_rp_mean_flux = 12386339.047057007
phot_rp_mean_flux_error = 10782.503
phot_rp_mean_flux_over_error = 1148.7444
phot_rp_mean_mag = 7.015538
phot_bp_rp_excess_factor = 1.1741534
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 = 0.3904624
bp_g = 0.1339531
g_rp = 0.2565093
radial_velocity = -19.040186
radial_velocity_error = 6.6433687
rv_method_used = 1
rv_nb_transits = 17
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 10
rv_expected_sig_to_noise = 353.83896
rv_renormalised_gof = 19.47441
rv_chisq_pvalue = 0.0
rv_time_duration = 880.0939
rv_amplitude_robust = 56.96399
rv_template_teff = 8500.0
rv_template_logg = 4.5
rv_template_fe_h = 0.25
rv_atm_param_origin = 555
vbroad = 59.498444
vbroad_error = 0.9954083
vbroad_nb_transits = 11
grvs_mag = 6.9042625
grvs_mag_error = 0.0683086
grvs_mag_nb_transits = 17
phot_variable_flag = NOT_AVAILABLE
l = 303.740616375365
b = 82.04323812259419
ecl_lon = 183.9766143707451
ecl_lat = 22.686346839051748
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 = 1.3715133e-13
classprob_dsc_combmod_galaxy = 6.8506404e-13
classprob_dsc_combmod_star = 0.9965226
teff_gspphot = 7240.64
teff_gspphot_lower = 7229.995
teff_gspphot_upper = 7254.323
logg_gspphot = 3.8714
logg_gspphot_lower = 3.8388
logg_gspphot_upper = 3.9214
mh_gspphot = -0.0163
mh_gspphot_lower = -0.0323
mh_gspphot_upper = -0.0056
distance_gspphot = 132.5045
distance_gspphot_lower = 123.4086
distance_gspphot_upper = 138.6108
azero_gspphot = 0.0041
azero_gspphot_lower = 0.0013
azero_gspphot_upper = 0.0076
ag_gspphot = 0.0037
ag_gspphot_lower = 0.0011
ag_gspphot_upper = 0.0069
ebpminrp_gspphot = 0.002
ebpminrp_gspphot_lower = 0.0006
ebpminrp_gspphot_upper = 0.0037
libname_gspphot = MARCS
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 3941893122816643840
source_id = 3941893122816643840
random_index = 970319766
ref_epoch = 2016.0
ra = 192.97627249993272
ra_error = 0.020190632
dec = 19.168117047483648
dec_error = 0.01630702
parallax = 9.510458596037378
parallax_error = 0.028030641
parallax_over_error = 339.28793
pm = 79.00031
pmra = -78.5042472279641
pmra_error = 0.027170282
pmdec = 8.839262529283644
pmdec_error = 0.030366447
ra_dec_corr = -0.27462605
ra_parallax_corr = -0.3984143
ra_pmra_corr = 0.046447985
ra_pmdec_corr = -0.16760121
dec_parallax_corr = 0.2769698
dec_pmra_corr = -0.18611549
dec_pmdec_corr = 0.22676058
parallax_pmra_corr = -0.23898606
parallax_pmdec_corr = 0.106672004
pmra_pmdec_corr = -0.28618026
astrometric_n_obs_al = 241
astrometric_n_obs_ac = 241
astrometric_n_good_obs_al = 239
astrometric_n_bad_obs_al = 2
astrometric_gof_al = -1.7120293
astrometric_chi2_al = 452.97742
astrometric_excess_noise = 0.1086591
astrometric_excess_noise_sig = 7.0759096
astrometric_params_solved = 31
astrometric_primary_flag = true
nu_eff_used_in_astrometry = 1.5846103
astrometric_matched_transits = 27
visibility_periods_used = 14
astrometric_sigma5d_max = 0.04609138
matched_transits = 36
new_matched_transits = 6
matched_transits_removed = 2
ipd_gof_harmonic_amplitude = 0.017217828
ipd_gof_harmonic_phase = 125.65536
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.92052853
duplicated_source = false
phot_g_n_obs = 299
phot_g_mean_flux = 15357881.728311706
phot_g_mean_flux_error = 3417.4495
phot_g_mean_flux_over_error = 4493.96
phot_g_mean_mag = 7.7215385
phot_bp_n_obs = 32
phot_bp_mean_flux = 8695750.902798282
phot_bp_mean_flux_error = 3464.9958
phot_bp_mean_flux_over_error = 2509.599
phot_bp_mean_mag = 7.9902744
phot_rp_n_obs = 29
phot_rp_mean_flux = 9659630.419561211
phot_rp_mean_flux_error = 3748.8855
phot_rp_mean_flux_over_error = 2576.6672
phot_rp_mean_mag = 7.2854943
phot_bp_rp_excess_factor = 1.1951766
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 = 0.7047801
bp_g = 0.2687359
g_rp = 0.43604422
radial_velocity = -12.951337
radial_velocity_error = 0.20933214
rv_method_used = 1
rv_nb_transits = 17
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 10
rv_expected_sig_to_noise = 318.6284
rv_renormalised_gof = -0.19358024
rv_chisq_pvalue = 0.649992
rv_time_duration = 880.0939
rv_amplitude_robust = 1.6914797
rv_template_teff = 6250.0
rv_template_logg = 3.5
rv_template_fe_h = 0.0
rv_atm_param_origin = 222
grvs_mag = 7.1118655
grvs_mag_error = 0.08139055
grvs_mag_nb_transits = 17
phot_variable_flag = NOT_AVAILABLE
l = 303.7284809031036
b = 82.03914449192041
ecl_lon = 183.97688892515325
ecl_lat = 22.68192903171941
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 = 1.0202512e-11
classprob_dsc_combmod_galaxy = 5.0961034e-11
classprob_dsc_combmod_star = 1.0000273e-06
teff_gspphot = 6000.936
teff_gspphot_lower = 5999.282
teff_gspphot_upper = 6003.1665
logg_gspphot = 3.7828
logg_gspphot_lower = 3.7797
logg_gspphot_upper = 3.785
mh_gspphot = -0.2854
mh_gspphot_lower = -0.2914
mh_gspphot_upper = -0.2793
distance_gspphot = 103.6204
distance_gspphot_lower = 103.3537
distance_gspphot_upper = 104.3154
azero_gspphot = 0.0009
azero_gspphot_lower = 0.0002
azero_gspphot_upper = 0.0024
ag_gspphot = 0.0008
ag_gspphot_lower = 0.0002
ag_gspphot_upper = 0.002
ebpminrp_gspphot = 0.0004
ebpminrp_gspphot_lower = 0.0001
ebpminrp_gspphot_upper = 0.0011
libname_gspphot = MARCS
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 3941893122816644224
classprob_dsc_combmod_quasar = 1.3715133e-13
classprob_dsc_combmod_galaxy = 6.8506404e-13
classprob_dsc_combmod_star = 0.9965226
classprob_dsc_combmod_whitedwarf = 1.0698436e-08
classprob_dsc_combmod_binarystar = 0.0034774074
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.74128014
classprob_dsc_specmod_whitedwarf = 3.972993e-05
classprob_dsc_specmod_binarystar = 0.25868014
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 7240.64
teff_gspphot_lower = 7229.995
teff_gspphot_upper = 7254.323
logg_gspphot = 3.8714
logg_gspphot_lower = 3.8388
logg_gspphot_upper = 3.9214
mh_gspphot = -0.0163
mh_gspphot_lower = -0.0323
mh_gspphot_upper = -0.0056
distance_gspphot = 132.5045
distance_gspphot_lower = 123.4086
distance_gspphot_upper = 138.6108
azero_gspphot = 0.0041
azero_gspphot_lower = 0.0013
azero_gspphot_upper = 0.0076
ag_gspphot = 0.0037
ag_gspphot_lower = 0.0011
ag_gspphot_upper = 0.0069
abp_gspphot = 0.0045
abp_gspphot_lower = 0.0014
abp_gspphot_upper = 0.0083
arp_gspphot = 0.0025
arp_gspphot_lower = 0.0008
arp_gspphot_upper = 0.0046
ebpminrp_gspphot = 0.002
ebpminrp_gspphot_lower = 0.0006
ebpminrp_gspphot_upper = 0.0037
mg_gspphot = 1.6366
mg_gspphot_lower = 1.5401
mg_gspphot_upper = 1.7879
radius_gspphot = 2.5386
radius_gspphot_lower = 2.3609
radius_gspphot_upper = 2.6593
logposterior_gspphot = -1960.934
mcmcaccept_gspphot = 0.45761755
libname_gspphot = MARCS
ew_espels_halpha = 0.29441583
ew_espels_halpha_uncertainty = 0.026647072
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.373693
flags_esphs = 93
spectraltype_esphs = A
radius_flame = 2.2228603
radius_flame_lower = 2.149536
radius_flame_upper = 2.2956662
lum_flame = 12.256581
lum_flame_lower = 11.613554
lum_flame_upper = 12.892401
mass_flame = 1.7218798
mass_flame_lower = 1.6768266
mass_flame_upper = 1.7665977
age_flame = 1.2400565
age_flame_lower = 1.0438535
age_flame_upper = 1.4362404
flags_flame = 00
evolstage_flame = 241
gravredshift_flame = 0.43567723
gravredshift_flame_lower = 0.4240772
gravredshift_flame_upper = 0.45353377
bc_flame = 0.08819655
mh_msc = -0.060103804
mh_msc_upper = 0.5
mh_msc_lower = -0.1361457
azero_msc = 0.099792816
azero_msc_upper = 0.19222867
azero_msc_lower = 0.0100049
distance_msc = 146.32695
distance_msc_upper = 171.63579
distance_msc_lower = 131.75694
teff_msc1 = 7618.7646
teff_msc1_upper = 7974.99
teff_msc1_lower = 5500.493
teff_msc2 = 6900.6343
teff_msc2_upper = 7623.5835
teff_msc2_lower = 6670.029
logg_msc1 = 3.911443
logg_msc1_upper = 4.0590363
logg_msc1_lower = 2.951341
logg_msc2 = 4.2960873
logg_msc2_upper = 4.4172516
logg_msc2_lower = 3.8652172
ag_msc = 0.0903521
ag_msc_upper = 0.17583671
ag_msc_lower = 0.0038378984
logposterior_msc = 502.69012
mcmcaccept_msc = 0.20114559
mcmcdrift_msc = 0.037383676
flags_msc = 0
neuron_oa_id = 202105281205440175
neuron_oa_dist = 7.1586e-06
neuron_oa_dist_percentile_rank = 95
flags_oa = 0003
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 3941893122816643840
classprob_dsc_combmod_quasar = 1.0202512e-11
classprob_dsc_combmod_galaxy = 5.0961034e-11
classprob_dsc_combmod_star = 1.0000273e-06
classprob_dsc_combmod_whitedwarf = 2.0026275e-10
classprob_dsc_combmod_binarystar = 0.999999
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.0
classprob_dsc_specmod_whitedwarf = 0.0
classprob_dsc_specmod_binarystar = 1.0
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 6000.936
teff_gspphot_lower = 5999.282
teff_gspphot_upper = 6003.1665
logg_gspphot = 3.7828
logg_gspphot_lower = 3.7797
logg_gspphot_upper = 3.785
mh_gspphot = -0.2854
mh_gspphot_lower = -0.2914
mh_gspphot_upper = -0.2793
distance_gspphot = 103.6204
distance_gspphot_lower = 103.3537
distance_gspphot_upper = 104.3154
azero_gspphot = 0.0009
azero_gspphot_lower = 0.0002
azero_gspphot_upper = 0.0024
ag_gspphot = 0.0008
ag_gspphot_lower = 0.0002
ag_gspphot_upper = 0.002
abp_gspphot = 0.001
abp_gspphot_lower = 0.0002
abp_gspphot_upper = 0.0025
arp_gspphot = 0.0005
arp_gspphot_lower = 0.0001
arp_gspphot_upper = 0.0015
ebpminrp_gspphot = 0.0004
ebpminrp_gspphot_lower = 0.0001
ebpminrp_gspphot_upper = 0.0011
mg_gspphot = 2.6312
mg_gspphot_lower = 2.6163
mg_gspphot_upper = 2.6374
radius_gspphot = 2.3542
radius_gspphot_lower = 2.348
radius_gspphot_upper = 2.371
logposterior_gspphot = -1721.1033
mcmcaccept_gspphot = 0.30971786
libname_gspphot = MARCS
teff_gspspec = 5440.0
teff_gspspec_lower = 3250.0
teff_gspspec_upper = 5785.0
logg_gspspec = 3.55
logg_gspspec_lower = 3.35
logg_gspspec_upper = 4.09
mh_gspspec = -0.75
mh_gspspec_lower = -2.0
mh_gspspec_upper = -0.13
alphafe_gspspec = 0.43
alphafe_gspspec_lower = 0.0
alphafe_gspspec_upper = 0.78
dibqf_gspspec = -2
flags_gspspec = 00000030000009999999999999999999999999999
logchisq_gspspec = -2.6627133
ew_espels_halpha = 0.08664298
ew_espels_halpha_uncertainty = 0.021854525
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.147057
flags_esphs = 91
spectraltype_esphs = F
radius_flame = 2.372536
radius_flame_lower = 2.324661
radius_flame_upper = 2.4204278
lum_flame = 6.577582
lum_flame_lower = 6.542318
lum_flame_upper = 6.613539
mass_flame = 1.3857841
mass_flame_lower = 1.3415196
mass_flame_upper = 1.4297059
age_flame = 3.360101
age_flame_lower = 2.9639962
age_flame_upper = 3.7613955
flags_flame = 00
evolstage_flame = 401
gravredshift_flame = 0.33059058
gravredshift_flame_lower = 0.32984865
gravredshift_flame_upper = 0.33117458
bc_flame = 0.07554129
mh_msc = 0.00057805516
mh_msc_upper = 0.5
mh_msc_lower = -0.18809469
azero_msc = 0.14585161
azero_msc_upper = 0.34169638
azero_msc_lower = 0.07175276
distance_msc = 104.17657
distance_msc_upper = 108.407524
distance_msc_lower = 97.69822
teff_msc1 = 6169.0576
teff_msc1_upper = 8000.0
teff_msc1_lower = 5741.792
teff_msc2 = 5985.461
teff_msc2_upper = 6315.759
teff_msc2_lower = 3000.0
logg_msc1 = 4.1263447
logg_msc1_upper = 4.815627
logg_msc1_lower = 4.0345964
logg_msc2 = 4.0958548
logg_msc2_upper = 4.3522263
logg_msc2_lower = 3.6099339
ag_msc = 0.12318218
ag_msc_upper = 0.28871322
ag_msc_lower = 0.05894588
logposterior_msc = 506.44318
mcmcaccept_msc = 0.13527447
mcmcdrift_msc = 0.03143534
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 08:33:23 +0200


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