Double Star Calculator - Results


STF 738 AB - Astrometric and kinematic properties
Gaia Source ID - Star A          : 3337991583943473280     Simbad
Gaia Source ID - Star B          : 3337991583942616704     Simbad
Observation Epoch : J2025.165 / 2025-03-02 Angular Separation : 4.330 ± 0.0050 arcsec Position Angle : 43.56 ± 0.0679 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 4.335 ± 0.0004 arcsec Position Angle : 43.82 ± 0.0054 degree Projected Separation : 1714 au Spatial Separation : 19.58 ± 65.07 pc Spatial Separation : 63.86 ± 212.24 ly Parallax Significance : 0.29 σ 3D Space Velocity Angle : 6.75 ± 2.71 degree ΔProper Motion Angle : 15.93 ± 8.61 degree ΔTotal Proper Motion : 2.09 ± 0.54 mas/yr ΔTangential Velocity : 3.61 ± 1.59 km/s ΔRadial Velocity : 1.70 ± 2.83 km/s ΔSpeed (scalar) : 1.05 ± 2.80 km/s ΔRelative Velocity (3D) : 4.30 ± 1.70 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 3337991583943473280           VizieR
Epoch : J2016.000 Right Ascension (RA) : 05h 35m 8.28s Declination (Dec) : 9° 56' 2.94" Distance : 385.57 ± 59.94 pc Distance : 1257.56 ± 195.51 ly Magnitude (G-band) : 3.53 mag Absolute Magnitude : -4.91 ± 0.34 mag Stellar Extinction : 0.51 ± 0.01 mag Spectral Type (BP/RP) : O Bolometric correction : -3.76 mag Luminosity : 230973.19 + 84262.04 / − 61738.89 L☉ Log(Luminosity) : 5.36356 Effective temperature (Teff) : 33118.27 +909.29 / -2584.18 K Log(Teff) : 4.52007 Mass estimation : 22.62 M☉ RUWE : 4.82 Position Angle of Proper Motion : 137.70 ± 7.15 degree Total Proper Motion : 4.30 ± 0.52 mas/yr Tangential Velocity : 7.87 ± 1.55 km/s Radial Velocity (Simbad) : 34.00 ± 2.00 km/s Bibcode : 2018A&A...613A..65H Space Velocity : 34.90 ± 1.98 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.00
Radius from GSP-Phot Aeneas      :       9.66  ±   2.30          R☉
Spectral type from ESP-ELS       :          B

Star A - Double Star Quality Metrics
Parallax over error :      6.432 : moderate
RUWE                :      4.820 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      3.528 : G > 3 mag, photometry reliable
Excess noise        :      1.988 : Poor fit
  Significance      :   6593.325 :   Possible binary or jitter
BP-RP excess factor :      1.129 : photometry consistent
Visibility periods  :         15 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.027 : unobtrusive (single star source)


Star B - Stellar Data
Gaia Source ID                   : 3337991583942616704           VizieR
Epoch : J2016.000 Right Ascension (RA) : 05h 35m 8.48s Declination (Dec) : 9° 56' 6.07" Distance : 405.15 ± 25.33 pc Distance : 1321.42 ± 82.60 ly Magnitude (G-band) : 5.46 mag Absolute Magnitude : -2.79 ± 0.14 mag Stellar Extinction : 0.21 ± 0.01 mag Spectral Type (BP/RP) : O Bolometric correction : -3.76 mag Luminosity : 32705.02 + 4358.49 / − 3845.95 L☉ Log(Luminosity) : 4.51461 Effective temperature (Teff) : 21454.70 +153.21 / -210.06 K Log(Teff) : 4.33152 Mass estimation : 13.81 M☉ RUWE : 1.32 Position Angle of Proper Motion : 153.64 ± 4.80 degree Total Proper Motion : 2.22 ± 0.14 mas/yr Tangential Velocity : 4.26 ± 0.38 km/s Radial Velocity (Simbad) : 35.70 ± 2.00 km/s Bibcode : 1953GCRV..C......0W Space Velocity : 35.95 ± 1.99 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.00
Radius from GSP-Phot Aeneas      :       9.00  ±   0.20          R☉
Spectral type from ESP-ELS       :          B

Star B - Double Star Quality Metrics
Parallax over error :     15.998 : good
RUWE                :      1.320 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      5.464 : G > 3 mag, photometry reliable
Excess noise        :      0.734 : Good fit
  Significance      :    859.859 :   Minor noise, likely negligible
BP-RP excess factor :      1.177 : photometry consistent
Visibility periods  :         15 : high, indicates well observed star
IPD multi-peak frac :         1% : mulitple peaks detected (possible double)
IDP GoF harmonic amp:      0.086 : 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)          :        0.52     (SPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.49     (Moderate)
COMOV: Distance Evidence Indicator :        0.01     (Unlikely)
Co-Moving Total Evidence Indicator :        0.08     (Unlikely)

rPM/COMOV Agreement                :                 (Discrepant)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :        1714     au
Spatial Separation                 :     4038876  ± 13422271  au
  1-Sigma Range                    : [      1714,   17461148] au
  Significance                     :        0.29     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 3427 au) : 0.0 % (2.0 * D-projected) P(D-3D <= 3495 au) : 0.0 % (D-critical) P(D-3D <= 10000 au) : 0.0 % (Wide binary) P(D-3D <= 20000 au) : 0.1 % (Very wide binary) P(D-3D <= 50000 au) : 0.2 % (Extremely wide) P(D-3D <= 206265 au) : 0.9 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.52     (SPM)
ΔRelative Velocity (3D)            :        4.30  ±  1.70   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 for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.02     (Unlikely)
WBS: Distance Evidence Indicator   :        0.00     (Unlikely)
Binarity Total Evidence Indicator  :        0.01     (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]         :      0.1431  ± 0.0789 dex
  Metallicity reliability factor A :        0.50
Metallicity Star B - [M/H]         :     -0.5005  ± 0.0285 dex
  Metallicity reliability factor B :        0.50
Metallicity Difference             :      0.6436           dex
Combined uncertainty               :      0.2261           dex
Sigma-Distance (Z-Score)           :      2.85 σ
  Compatibility                    :  Marginal (possible agreement)

Note: For close visual binaries (<5"), Gaia DR3 GSP-Phot metallicities
should be treated with caution due to possible BP/RP spectral contamination.

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) :  4.82 : High
RUWE probability for a binary system (Star B) :  1.32 : Low

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      4.395    0.065      47.165    0.825
1901.0      4.395    0.065      47.136    0.818
1902.0      4.394    0.064      47.108    0.811
1903.0      4.394    0.063      47.079    0.804
1904.0      4.393    0.063      47.051    0.798
1905.0      4.393    0.062      47.023    0.791
1906.0      4.392    0.062      46.994    0.784
1907.0      4.391    0.061      46.966    0.777
1908.0      4.391    0.061      46.937    0.770
1909.0      4.390    0.060      46.909    0.763
1910.0      4.390    0.059      46.880    0.756
1911.0      4.389    0.059      46.852    0.749
1912.0      4.389    0.058      46.823    0.742
1913.0      4.388    0.058      46.795    0.736
1914.0      4.387    0.057      46.766    0.729
1915.0      4.387    0.057      46.738    0.722
1916.0      4.386    0.056      46.709    0.715
1917.0      4.386    0.055      46.681    0.708
1918.0      4.385    0.055      46.652    0.701
1919.0      4.385    0.054      46.624    0.694
1920.0      4.384    0.054      46.595    0.687
1921.0      4.383    0.053      46.567    0.680
1922.0      4.383    0.053      46.538    0.673
1923.0      4.382    0.052      46.510    0.666
1924.0      4.382    0.051      46.481    0.659
1925.0      4.381    0.051      46.453    0.652
1926.0      4.381    0.050      46.424    0.645
1927.0      4.380    0.050      46.395    0.638
1928.0      4.379    0.049      46.367    0.631
1929.0      4.379    0.049      46.338    0.624
1930.0      4.378    0.048      46.310    0.617
1931.0      4.378    0.047      46.281    0.610
1932.0      4.377    0.047      46.252    0.603
1933.0      4.377    0.046      46.224    0.596
1934.0      4.376    0.046      46.195    0.589
1935.0      4.376    0.045      46.166    0.582
1936.0      4.375    0.045      46.138    0.575
1937.0      4.374    0.044      46.109    0.568
1938.0      4.374    0.043      46.080    0.561
1939.0      4.373    0.043      46.052    0.554
1940.0      4.373    0.042      46.023    0.547
1941.0      4.372    0.042      45.994    0.540
1942.0      4.372    0.041      45.966    0.533
1943.0      4.371    0.041      45.937    0.526
1944.0      4.371    0.040      45.908    0.519
1945.0      4.370    0.040      45.880    0.512
1946.0      4.370    0.039      45.851    0.505
1947.0      4.369    0.038      45.822    0.498
1948.0      4.369    0.038      45.793    0.491
1949.0      4.368    0.037      45.765    0.484
1950.0      4.367    0.037      45.736    0.477
1951.0      4.367    0.036      45.707    0.470
1952.0      4.366    0.036      45.678    0.463
1953.0      4.366    0.035      45.650    0.456
1954.0      4.365    0.034      45.621    0.448
1955.0      4.365    0.034      45.592    0.441
1956.0      4.364    0.033      45.563    0.434
1957.0      4.364    0.033      45.534    0.427
1958.0      4.363    0.032      45.506    0.420
1959.0      4.363    0.032      45.477    0.413
1960.0      4.362    0.031      45.448    0.406
1961.0      4.362    0.031      45.419    0.399
1962.0      4.361    0.030      45.390    0.392
1963.0      4.361    0.029      45.362    0.384
1964.0      4.360    0.029      45.333    0.377
1965.0      4.360    0.028      45.304    0.370
1966.0      4.359    0.028      45.275    0.363
1967.0      4.359    0.027      45.246    0.356
1968.0      4.358    0.027      45.217    0.349
1969.0      4.358    0.026      45.188    0.341
1970.0      4.357    0.025      45.159    0.334
1971.0      4.356    0.025      45.131    0.327
1972.0      4.356    0.024      45.102    0.320
1973.0      4.355    0.024      45.073    0.313
1974.0      4.355    0.023      45.044    0.306
1975.0      4.354    0.023      45.015    0.298
1976.0      4.354    0.022      44.986    0.291
1977.0      4.353    0.022      44.957    0.284
1978.0      4.353    0.021      44.928    0.277
1979.0      4.352    0.020      44.899    0.270
1980.0      4.352    0.020      44.870    0.262
1981.0      4.351    0.019      44.841    0.255
1982.0      4.351    0.019      44.812    0.248
1983.0      4.350    0.018      44.783    0.241
1984.0      4.350    0.018      44.754    0.234
1985.0      4.349    0.017      44.725    0.226
1986.0      4.349    0.017      44.696    0.219
1987.0      4.348    0.016      44.667    0.212
1988.0      4.348    0.015      44.638    0.205
1989.0      4.347    0.015      44.609    0.197
1990.0      4.347    0.014      44.580    0.190
1991.0      4.346    0.014      44.551    0.183
1992.0      4.346    0.013      44.522    0.176
1993.0      4.346    0.013      44.493    0.168
1994.0      4.345    0.012      44.464    0.161
1995.0      4.345    0.012      44.435    0.154
1996.0      4.344    0.011      44.406    0.147
1997.0      4.344    0.010      44.377    0.139
1998.0      4.343    0.010      44.348    0.132
1999.0      4.343    0.009      44.319    0.125
2000.0      4.342    0.009      44.290    0.117
2001.0      4.342    0.008      44.261    0.110
2002.0      4.341    0.008      44.231    0.103
2003.0      4.341    0.007      44.202    0.096
2004.0      4.340    0.007      44.173    0.088
2005.0      4.340    0.006      44.144    0.081
2006.0      4.339    0.006      44.115    0.074
2007.0      4.339    0.005      44.086    0.066
2008.0      4.338    0.004      44.057    0.059
2009.0      4.338    0.004      44.028    0.052
2010.0      4.337    0.003      43.998    0.044
2011.0      4.337    0.003      43.969    0.037
2012.0      4.336    0.002      43.940    0.030
2013.0      4.336    0.002      43.911    0.023
2014.0      4.336    0.001      43.882    0.016
2015.0      4.335    0.001      43.853    0.009
2016.0      4.335    0.000      43.823    0.005
2017.0      4.334    0.001      43.794    0.009
2018.0      4.334    0.001      43.765    0.016
2019.0      4.333    0.002      43.736    0.023
2020.0      4.333    0.002      43.707    0.030
2021.0      4.332    0.003      43.677    0.037
2022.0      4.332    0.003      43.648    0.045
2023.0      4.331    0.004      43.619    0.052
2024.0      4.331    0.004      43.590    0.059
2025.0      4.331    0.005      43.560    0.067
2026.0      4.330    0.005      43.531    0.074
2027.0      4.330    0.006      43.502    0.081
2028.0      4.329    0.007      43.473    0.089
2029.0      4.329    0.007      43.443    0.096
2030.0      4.328    0.008      43.414    0.104
2031.0      4.328    0.008      43.385    0.111
2032.0      4.327    0.009      43.356    0.119
2033.0      4.327    0.009      43.326    0.126
2034.0      4.327    0.010      43.297    0.133
2035.0      4.326    0.010      43.268    0.141
2036.0      4.326    0.011      43.238    0.148
2037.0      4.325    0.012      43.209    0.156
2038.0      4.325    0.012      43.180    0.163
2039.0      4.324    0.013      43.150    0.171
2040.0      4.324    0.013      43.121    0.178
2041.0      4.323    0.014      43.092    0.186
2042.0      4.323    0.014      43.062    0.193
2043.0      4.323    0.015      43.033    0.200
2044.0      4.322    0.015      43.004    0.208
2045.0      4.322    0.016      42.974    0.215
2046.0      4.321    0.016      42.945    0.223
2047.0      4.321    0.017      42.916    0.230
2048.0      4.320    0.017      42.886    0.238
2049.0      4.320    0.018      42.857    0.245
2050.0      4.320    0.019      42.827    0.253
2051.0      4.319    0.019      42.798    0.260
2052.0      4.319    0.020      42.769    0.268
2053.0      4.318    0.020      42.739    0.275
2054.0      4.318    0.021      42.710    0.283
2055.0      4.318    0.021      42.680    0.290
2056.0      4.317    0.022      42.651    0.298
2057.0      4.317    0.022      42.622    0.306
2058.0      4.316    0.023      42.592    0.313
2059.0      4.316    0.023      42.563    0.321
2060.0      4.315    0.024      42.533    0.328
2061.0      4.315    0.025      42.504    0.336
2062.0      4.315    0.025      42.474    0.343
2063.0      4.314    0.026      42.445    0.351
2064.0      4.314    0.026      42.415    0.358
2065.0      4.313    0.027      42.386    0.366
2066.0      4.313    0.027      42.356    0.374
2067.0      4.313    0.028      42.327    0.381
2068.0      4.312    0.028      42.297    0.389
2069.0      4.312    0.029      42.268    0.396
2070.0      4.311    0.029      42.238    0.404
2071.0      4.311    0.030      42.209    0.411
2072.0      4.311    0.030      42.179    0.419
2073.0      4.310    0.031      42.150    0.427
2074.0      4.310    0.032      42.120    0.434
2075.0      4.309    0.032      42.091    0.442
2076.0      4.309    0.033      42.061    0.449
2077.0      4.309    0.033      42.032    0.457
2078.0      4.308    0.034      42.002    0.465
2079.0      4.308    0.034      41.973    0.472
2080.0      4.308    0.035      41.943    0.480
2081.0      4.307    0.035      41.914    0.488
2082.0      4.307    0.036      41.884    0.495
2083.0      4.306    0.036      41.854    0.503
2084.0      4.306    0.037      41.825    0.510
2085.0      4.306    0.037      41.795    0.518
2086.0      4.305    0.038      41.766    0.526
2087.0      4.305    0.038      41.736    0.533
2088.0      4.304    0.039      41.706    0.541
2089.0      4.304    0.040      41.677    0.549
2090.0      4.304    0.040      41.647    0.556
2091.0      4.303    0.041      41.618    0.564
2092.0      4.303    0.041      41.588    0.572
2093.0      4.303    0.042      41.558    0.579
2094.0      4.302    0.042      41.529    0.587
2095.0      4.302    0.043      41.499    0.595
2096.0      4.301    0.043      41.470    0.602
2097.0      4.301    0.044      41.440    0.610
2098.0      4.301    0.044      41.410    0.618
2099.0      4.300    0.045      41.381    0.625
2100.0      4.300    0.045      41.351    0.633




WDS record for STF 738 AB
wds_id                       : 05351+0956
discoverer_code              : STF
discoverer_number            : 738
discoverer_components        : AB
date_first                   : 1779
date_last                    : 2024
num_of_obs                   : 201
pa_first                     : 45
pa_last                      : 51
sep_first                    : 5.8
sep_last                     : 3.1
mag_primary                  : 3.51
mag_secondary                : 5.45
spectral_type                : O8III+B0V
primary_proper_motion_RA     : 3
primary_proper_motion_DEC    : -3
secondary_proper_motion_RA   : 1
secondary_proper_motion_DEC  : -2
dm_number                    : +09  879
notes                        : NZ
precise_coordinate           : 053508.28+095603.0
                             : 05:35:08.28 +09:56:03.0

WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
Z: Statistically the same parallax: physical



Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 3337991583943473280
source_id = 3337991583943473280
random_index = 1165701381
ref_epoch = 2016.0
ra = 83.78449673650563
ra_error = 0.41928068
dec = 9.934150110721673
dec_error = 0.36066404
parallax = 2.5935737953210762
parallax_error = 0.4032116
parallax_over_error = 6.4322896
pm = 4.303253
pmra = 2.8959648343317688
pmra_error = 0.6140202
pmdec = -3.182982295347482
pmdec_error = 0.42530265
ra_dec_corr = -0.72293353
ra_parallax_corr = -0.33293355
ra_pmra_corr = -0.67539203
ra_pmdec_corr = 0.6450804
dec_parallax_corr = 0.3051558
dec_pmra_corr = 0.777861
dec_pmdec_corr = -0.8750615
parallax_pmra_corr = 0.3135245
parallax_pmdec_corr = -0.079098456
pmra_pmdec_corr = -0.80787253
astrometric_n_obs_al = 255
astrometric_n_obs_ac = 255
astrometric_n_good_obs_al = 250
astrometric_n_bad_obs_al = 5
astrometric_gof_al = 61.480026
astrometric_chi2_al = 190063.08
astrometric_excess_noise = 1.988466
astrometric_excess_noise_sig = 6593.3247
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.5829797
pseudocolour_error = 0.060888465
ra_pseudocolour_corr = 0.28787112
dec_pseudocolour_corr = -0.19816844
parallax_pseudocolour_corr = -0.3145713
pmra_pseudocolour_corr = -0.105898514
pmdec_pseudocolour_corr = 0.09493373
astrometric_matched_transits = 29
visibility_periods_used = 15
astrometric_sigma5d_max = 1.0839124
matched_transits = 29
new_matched_transits = 29
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.027031055
ipd_gof_harmonic_phase = 167.97913
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 4.8226757
duplicated_source = false
phot_g_n_obs = 227
phot_g_mean_flux = 730643426.642022
phot_g_mean_flux_error = 2012272.9
phot_g_mean_flux_over_error = 363.0936
phot_g_mean_mag = 3.528103
phot_bp_n_obs = 29
phot_bp_mean_flux = 546428066.1702335
phot_bp_mean_flux_error = 6948703.5
phot_bp_mean_flux_over_error = 78.63741
phot_bp_mean_mag = 3.4947097
phot_rp_n_obs = 29
phot_rp_mean_flux = 278168089.81687856
phot_rp_mean_flux_error = 492753.75
phot_rp_mean_flux_over_error = 564.51746
phot_rp_mean_mag = 3.6371272
phot_bp_rp_excess_factor = 1.128589
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 29
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 29
phot_proc_mode = 0
bp_rp = -0.14241743
bp_g = -0.033393383
g_rp = -0.10902405
phot_variable_flag = NOT_AVAILABLE
l = 195.0519011616347
b = -11.995060035306775
ecl_lon = 83.70685199343617
ecl_lat = -13.369453965110038
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 = 1.0238131e-13
classprob_dsc_combmod_galaxy = 5.113895e-13
classprob_dsc_combmod_star = 0.9999993
teff_gspphot = 33118.273
teff_gspphot_lower = 30534.098
teff_gspphot_upper = 34027.56
logg_gspphot = 3.8336
logg_gspphot_lower = 3.7487
logg_gspphot_upper = 4.0197
mh_gspphot = 0.1431
mh_gspphot_lower = 0.0432
mh_gspphot_upper = 0.2009
distance_gspphot = 353.9781
distance_gspphot_lower = 216.3053
distance_gspphot_upper = 407.4218
azero_gspphot = 0.4976
azero_gspphot_lower = 0.4881
azero_gspphot_upper = 0.5037
ag_gspphot = 0.5065
ag_gspphot_lower = 0.4968
ag_gspphot_upper = 0.5127
ebpminrp_gspphot = 0.2759
ebpminrp_gspphot_lower = 0.2708
ebpminrp_gspphot_upper = 0.2791
libname_gspphot = OB
radial_velocity = 34.0
radial_velocity_error = 2.0
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 3337991583942616704
source_id = 3337991583942616704
random_index = 1691436110
ref_epoch = 2016.0
ra = 83.78534317214339
ra_error = 0.14577892
dec = 9.93501881683347
dec_error = 0.106066465
parallax = 2.46822538969732
parallax_error = 0.15428607
parallax_over_error = 15.997721
pm = 2.2162042
pmra = 0.984094441825616
pmra_error = 0.19769086
pmdec = -1.9857288139332634
pmdec_error = 0.12621209
ra_dec_corr = -0.48644033
ra_parallax_corr = -0.35936502
ra_pmra_corr = -0.64456123
ra_pmdec_corr = 0.42925707
dec_parallax_corr = -0.003272119
dec_pmra_corr = 0.58067113
dec_pmdec_corr = -0.86697465
parallax_pmra_corr = 0.34877986
parallax_pmdec_corr = 0.10321542
pmra_pmdec_corr = -0.62773323
astrometric_n_obs_al = 275
astrometric_n_obs_ac = 275
astrometric_n_good_obs_al = 269
astrometric_n_bad_obs_al = 6
astrometric_gof_al = 7.1388445
astrometric_chi2_al = 27004.21
astrometric_excess_noise = 0.7344065
astrometric_excess_noise_sig = 859.85895
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.8341216
astrometric_matched_transits = 31
visibility_periods_used = 15
astrometric_sigma5d_max = 0.32622507
matched_transits = 33
new_matched_transits = 25
matched_transits_removed = 6
ipd_gof_harmonic_amplitude = 0.08646005
ipd_gof_harmonic_phase = 39.04367
ipd_frac_multi_peak = 1
ipd_frac_odd_win = 0
ruwe = 1.324862
duplicated_source = false
phot_g_n_obs = 263
phot_g_mean_flux = 122792208.31212941
phot_g_mean_flux_error = 105619.32
phot_g_mean_flux_over_error = 1162.5923
phot_g_mean_mag = 5.46444
phot_bp_n_obs = 30
phot_bp_mean_flux = 98268386.44760962
phot_bp_mean_flux_error = 167838.9
phot_bp_mean_flux_over_error = 585.4923
phot_bp_mean_mag = 5.3575077
phot_rp_n_obs = 28
phot_rp_mean_flux = 46259486.91950576
phot_rp_mean_flux_error = 108913.766
phot_rp_mean_flux_over_error = 424.735
phot_rp_mean_mag = 5.5848937
phot_bp_rp_excess_factor = 1.1770117
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 30
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 28
phot_proc_mode = 0
bp_rp = -0.227386
bp_g = -0.10693216
g_rp = -0.120453835
phot_variable_flag = NOT_AVAILABLE
l = 195.0515725916108
b = -11.993899654753596
ecl_lon = 83.70774764281113
ecl_lat = -13.3686230145053
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 = 1.02235535e-13
classprob_dsc_combmod_galaxy = 5.106614e-13
classprob_dsc_combmod_star = 0.9999996
teff_gspphot = 21454.701
teff_gspphot_lower = 21244.646
teff_gspphot_upper = 21607.914
logg_gspphot = 3.5227
logg_gspphot_lower = 3.5085
logg_gspphot_upper = 3.5372
mh_gspphot = -0.5005
mh_gspphot_lower = -0.5247
mh_gspphot_upper = -0.4677
distance_gspphot = 583.9896
distance_gspphot_lower = 568.5624
distance_gspphot_upper = 598.4392
azero_gspphot = 0.2108
azero_gspphot_lower = 0.2049
azero_gspphot_upper = 0.2147
ag_gspphot = 0.2129
ag_gspphot_lower = 0.2069
ag_gspphot_upper = 0.217
ebpminrp_gspphot = 0.1151
ebpminrp_gspphot_lower = 0.1118
ebpminrp_gspphot_upper = 0.1173
libname_gspphot = OB
radial_velocity = 35.7
radial_velocity_error = 2.0
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 3337991583943473280
classprob_dsc_combmod_quasar = 1.0238131e-13
classprob_dsc_combmod_galaxy = 5.113895e-13
classprob_dsc_combmod_star = 0.9999993
classprob_dsc_combmod_whitedwarf = 7.0480604e-07
classprob_dsc_combmod_binarystar = 1.0034903e-10
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9964929
classprob_dsc_specmod_whitedwarf = 0.0035071517
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 = 33118.273
teff_gspphot_lower = 30534.098
teff_gspphot_upper = 34027.56
logg_gspphot = 3.8336
logg_gspphot_lower = 3.7487
logg_gspphot_upper = 4.0197
mh_gspphot = 0.1431
mh_gspphot_lower = 0.0432
mh_gspphot_upper = 0.2009
distance_gspphot = 353.9781
distance_gspphot_lower = 216.3053
distance_gspphot_upper = 407.4218
azero_gspphot = 0.4976
azero_gspphot_lower = 0.4881
azero_gspphot_upper = 0.5037
ag_gspphot = 0.5065
ag_gspphot_lower = 0.4968
ag_gspphot_upper = 0.5127
abp_gspphot = 0.5869
abp_gspphot_lower = 0.5758
abp_gspphot_upper = 0.5939
arp_gspphot = 0.311
arp_gspphot_lower = 0.305
arp_gspphot_upper = 0.3148
ebpminrp_gspphot = 0.2759
ebpminrp_gspphot_lower = 0.2708
ebpminrp_gspphot_upper = 0.2791
mg_gspphot = -4.7786
mg_gspphot_lower = -5.0788
mg_gspphot_upper = -3.6947
radius_gspphot = 9.6577
radius_gspphot_lower = 6.4796
radius_gspphot_upper = 11.081
logposterior_gspphot = -3685.0308
mcmcaccept_gspphot = 0.37357366
libname_gspphot = OB
ew_espels_halpha = 0.037551608
ew_espels_halpha_uncertainty = 0.034211006
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.109251
flags_esphs = 999
spectraltype_esphs = B
mh_msc = -0.100034
mh_msc_upper = -0.09969999
mh_msc_lower = -0.100289255
azero_msc = 0.099698916
azero_msc_upper = 0.10104531
azero_msc_lower = 0.098048165
distance_msc = 33.664024
distance_msc_upper = 34.207695
distance_msc_lower = 32.83589
teff_msc1 = 7600.1963
teff_msc1_upper = 7602.74
teff_msc1_lower = 7597.8574
teff_msc2 = 7599.7627
teff_msc2_upper = 7601.7207
teff_msc2_lower = 7596.711
logg_msc1 = 3.898913
logg_msc1_upper = 3.9052644
logg_msc1_lower = 3.8932528
logg_msc2 = 3.9005103
logg_msc2_upper = 3.9022508
logg_msc2_lower = 3.8980641
ag_msc = 0.09088851
ag_msc_upper = 0.09211636
ag_msc_lower = 0.08938699
logposterior_msc = -407960.8
mcmcaccept_msc = 0.31756562
mcmcdrift_msc = 2.189342
flags_msc = 1
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 3337991583942616704
classprob_dsc_combmod_quasar = 1.02235535e-13
classprob_dsc_combmod_galaxy = 5.106614e-13
classprob_dsc_combmod_star = 0.9999996
classprob_dsc_combmod_whitedwarf = 4.185914e-07
classprob_dsc_combmod_binarystar = 1.0020614e-10
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.99791414
classprob_dsc_specmod_whitedwarf = 0.0020858988
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 = 21454.701
teff_gspphot_lower = 21244.646
teff_gspphot_upper = 21607.914
logg_gspphot = 3.5227
logg_gspphot_lower = 3.5085
logg_gspphot_upper = 3.5372
mh_gspphot = -0.5005
mh_gspphot_lower = -0.5247
mh_gspphot_upper = -0.4677
distance_gspphot = 583.9896
distance_gspphot_lower = 568.5624
distance_gspphot_upper = 598.4392
azero_gspphot = 0.2108
azero_gspphot_lower = 0.2049
azero_gspphot_upper = 0.2147
ag_gspphot = 0.2129
ag_gspphot_lower = 0.2069
ag_gspphot_upper = 0.217
abp_gspphot = 0.2465
abp_gspphot_lower = 0.2396
abp_gspphot_upper = 0.2512
arp_gspphot = 0.1314
arp_gspphot_lower = 0.1277
arp_gspphot_upper = 0.1339
ebpminrp_gspphot = 0.1151
ebpminrp_gspphot_lower = 0.1118
ebpminrp_gspphot_upper = 0.1173
mg_gspphot = -3.6381
mg_gspphot_lower = -3.6924
mg_gspphot_upper = -3.5763
radius_gspphot = 8.9988
radius_gspphot_lower = 8.7963
radius_gspphot_upper = 9.2032
logposterior_gspphot = -3302.5352
mcmcaccept_gspphot = 0.23931034
libname_gspphot = OB
ew_espels_halpha = 0.093907356
ew_espels_halpha_uncertainty = 0.026711904
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.12495
flags_esphs = 91
spectraltype_esphs = B
mh_msc = -0.09999986
mh_msc_upper = -0.09995702
mh_msc_lower = -0.10003726
azero_msc = 0.09997529
azero_msc_upper = 0.100115284
azero_msc_lower = 0.09974544
distance_msc = 80.2173
distance_msc_upper = 80.74327
distance_msc_lower = 79.81554
teff_msc1 = 7599.9062
teff_msc1_upper = 7600.8047
teff_msc1_lower = 7598.715
teff_msc2 = 7599.8833
teff_msc2_upper = 7600.9673
teff_msc2_lower = 7599.0093
logg_msc1 = 3.8998795
logg_msc1_upper = 3.9005208
logg_msc1_lower = 3.8992572
logg_msc2 = 3.8999805
logg_msc2_upper = 3.900157
logg_msc2_lower = 3.8995895
ag_msc = 0.09113988
ag_msc_upper = 0.09127131
ag_msc_lower = 0.09093633
logposterior_msc = -614700.7
mcmcaccept_msc = 0.35656324
mcmcdrift_msc = 1.7495992
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 08:47:19 +0200



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