Double Star Calculator - Results


STF 1964 CD - Astrometric and kinematic properties
Gaia Source ID - Star A          : 1374656960858803072     Simbad
Gaia Source ID - Star B          : 1374656960861310336     Simbad
Observation Epoch : J2025.463 / 2025-06-19 Angular Separation : 1.551 ± 0.0004 arcsec Position Angle : 21.21 ± 0.0150 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 1.564 < 0.0001 arcsec Position Angle : 20.49 ± 0.0009 degree Projected Separation : 172 au Spatial Separation : 24813 ± 94489 au Parallax Significance : 0.26 σ 3D Space Velocity Angle : 2.16 ± 1.06 degree ΔProper Motion Angle : 0.55 ± 0.04 degree ΔTotal Proper Motion : 2.36 ± 0.04 mas/yr ΔTangential Velocity : 1.19 ± 0.16 km/s ΔRadial Velocity : 1.47 ± 1.27 km/s ΔSpeed (scalar) : 0.07 ± 0.84 km/s ΔRelative Velocity (3D) : 1.93 ± 0.97 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 1374656960858803072           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 38m 14.07s Declination (Dec) : 36° 14' 50.49" Distance : 109.93 ± 0.24 pc Distance : 358.53 ± 0.79 ly Magnitude (G-band) : 7.96 mag Absolute Magnitude : 2.75 ± 0.01 mag Stellar Extinction : 0.01 ± <0.01 mag Spectral Type (BP/RP) : F Bolometric correction : -0.02 mag Luminosity : 6.35 + 0.04 / − 0.04 L☉ Log(Luminosity) : 0.80303 Effective temperature (Teff) : 6565.03 +12.54 / - 7.61 K Log(Teff) : 3.81724 Mass estimation : 1.60 M☉ RUWE : 1.07 Position Angle of Proper Motion : 307.39 ± 0.02 degree Total Proper Motion : 75.18 ± 0.02 mas/yr Tangential Velocity : 39.18 ± 0.09 km/s Radial Velocity (Simbad) : -32.84 ± 0.91 km/s Bibcode : 2002A&A...382..118T Space Velocity : 51.12 ± 0.59 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.05
Radius from GSP-Phot Aeneas      :       1.94  ±   0.01          R☉
Spectral type from ESP-ELS       :          F
Radius of the star from FLAME    :       1.91  ±   0.04          R☉
Bolometric correction            :       0.02                    mag
Luminosity of the star (FLAME)   :       6.10  ±   0.03          L☉
Mass of the star from FLAME      :       1.45  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        262      Main Sequence (early)

Star A - Double Star Quality Metrics
Parallax over error :    456.224 : very good
RUWE                :      1.070 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      7.963 : G > 3 mag, photometry reliable
Excess noise        :      0.161 : Good fit
  Significance      :     19.601 :   Minor noise, likely negligible
BP-RP excess factor :      1.346 : photometry inconsistent
Visibility periods  :         29 : high, indicates well observed star
IPD multi-peak frac :        16% : mulitple peaks detected (possible double)
IDP GoF harmonic amp:      0.045 : unobtrusive (single star source)


Star B - Stellar Data
Gaia Source ID                   : 1374656960861310336           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 38m 14.12s Declination (Dec) : 36° 14' 51.96" Distance : 110.05 ± 0.39 pc Distance : 358.93 ± 1.27 ly Magnitude (G-band) : 8.92 mag Absolute Magnitude : 3.71 ± 0.01 mag Stellar Extinction : N/A Spectral Type (BP/RP) : F Bolometric correction : -0.02 mag Luminosity : 2.62 + 0.02 / − 0.02 L☉ Log(Luminosity) : 0.41836 Teff (bp_rp) : 6700.00 K Log(Teff) : 3.82607 Mass estimation : 1.32 M☉ RUWE : 1.23 Position Angle of Proper Motion : 306.83 ± 0.03 degree Total Proper Motion : 72.82 ± 0.04 mas/yr Tangential Velocity : 37.99 ± 0.14 km/s Radial Velocity (Simbad) : -34.31 ± 0.88 km/s Bibcode : 2002A&A...382..118T Space Velocity : 51.19 ± 0.60 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.04

Star B - Double Star Quality Metrics
Parallax over error :    282.444 : very good
RUWE                :      1.230 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      8.922 : G > 3 mag, photometry reliable
Excess noise        :      0.260 : Good fit
  Significance      :     61.124 :   Minor noise, likely negligible
BP-RP excess factor :      1.378 : photometry inconsistent
Visibility periods  :         20 : high, indicates well observed star
IPD multi-peak frac :         7% : mulitple peaks detected (possible double)
IDP GoF harmonic amp:      0.053 : 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)          :        0.03     (CPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.85     (Strong)
COMOV: Distance Evidence Indicator :        0.90     (Strong)
Co-Moving Total Evidence Indicator :        0.87     (Strong)

rPM/COMOV Agreement                :                 (High)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :         172     au
Spatial Separation                 :       24813  ±    94489  au
  1-Sigma Range                    : [       172,     119303] au
  Significance                     :        0.26     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 344 au) : 0.1 % (2.0 * D-projected) P(D-3D <= 1000 au) : 0.6 % (Intermediate) P(D-3D <= 1398 au) : 0.8 % (D-critical) P(D-3D <= 2500 au) : 1.6 % (Wide binary) P(D-3D <= 10000 au) : 6.7 % (Wide binary) P(D-3D <= 20000 au) : 13.7 % (Very wide binary) P(D-3D <= 50000 au) : 34.5 % (Extremely wide) P(D-3D <= 206265 au) : 95.5 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.03     (CPM)
ΔRelative Velocity (3D)            :        1.93  ±  0.97   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.01     (Unlikely)
WBS: Distance Evidence Indicator   :        0.19     (Weak)
Binarity Total Evidence Indicator  :        0.05     (Unlikely)


UWLE for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.85     (Strong)
WBS: Distance Evidence Indicator   :        0.21     (Weak)
Binarity Total Evidence Indicator  :        0.42     (Moderate)

Orbital & Binding Dynamics         :
-----------------------------------
Est. orbital period at lower bound :     1144.00            years
Escape Velocity                    :        5.49            km/s (Bound)
3D Velocity Difference             :        1.93  ±  0.97   km/s
Circular Orbital Velocity          :        3.88            km/s
Binding Indicator η                :        0.12     (Strongly Bound)
  η < 0.5 : Strongly bound / 0.5 ≤ η < 1.0: Bound / η ≥ 1.0 : Unbound

UWLE for Tight Binaries (2D) : =================================== TBS: Velocity Evidence Indicator : 0.85 (Strong) TBS: Distance Evidence Indicator : 0.97 (Strong) Binarity Total Evidence Indicator : 0.91 (Strong) Orbital & Binding Dynamics : ----------------------------------- Est. orbital period at lower bound : 1144.00 years Escape Velocity : 5.49 km/s (Bound) 3D Velocity Difference : 1.93 ± 0.97 km/s Circular Orbital Velocity : 3.88 km/s Binding Indicator η : 0.12 (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

RUWE parameters
RUWE probability for a binary system (Star A) :  1.07 : Zero
RUWE probability for a binary system (Star B) :  1.23 : 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      1.738    0.005      12.604    0.166
1901.0      1.737    0.005      12.665    0.164
1902.0      1.735    0.005      12.726    0.163
1903.0      1.733    0.005      12.788    0.162
1904.0      1.732    0.005      12.849    0.161
1905.0      1.730    0.005      12.910    0.159
1906.0      1.729    0.005      12.972    0.158
1907.0      1.727    0.005      13.034    0.157
1908.0      1.725    0.005      13.096    0.155
1909.0      1.724    0.005      13.157    0.154
1910.0      1.722    0.005      13.220    0.153
1911.0      1.721    0.005      13.282    0.151
1912.0      1.719    0.005      13.344    0.150
1913.0      1.717    0.005      13.406    0.149
1914.0      1.716    0.005      13.469    0.147
1915.0      1.714    0.005      13.531    0.146
1916.0      1.713    0.005      13.594    0.145
1917.0      1.711    0.005      13.657    0.144
1918.0      1.709    0.005      13.720    0.142
1919.0      1.708    0.005      13.783    0.141
1920.0      1.706    0.005      13.846    0.140
1921.0      1.705    0.004      13.910    0.138
1922.0      1.703    0.004      13.973    0.137
1923.0      1.701    0.004      14.037    0.136
1924.0      1.700    0.004      14.100    0.134
1925.0      1.698    0.004      14.164    0.133
1926.0      1.697    0.004      14.228    0.131
1927.0      1.695    0.004      14.292    0.130
1928.0      1.694    0.004      14.356    0.129
1929.0      1.692    0.004      14.421    0.127
1930.0      1.690    0.004      14.485    0.126
1931.0      1.689    0.004      14.550    0.125
1932.0      1.687    0.004      14.614    0.123
1933.0      1.686    0.004      14.679    0.122
1934.0      1.684    0.004      14.744    0.121
1935.0      1.683    0.004      14.809    0.119
1936.0      1.681    0.004      14.874    0.118
1937.0      1.679    0.004      14.939    0.116
1938.0      1.678    0.004      15.005    0.115
1939.0      1.676    0.004      15.070    0.114
1940.0      1.675    0.004      15.136    0.112
1941.0      1.673    0.004      15.201    0.111
1942.0      1.672    0.003      15.267    0.110
1943.0      1.670    0.003      15.333    0.108
1944.0      1.669    0.003      15.399    0.107
1945.0      1.667    0.003      15.466    0.105
1946.0      1.666    0.003      15.532    0.104
1947.0      1.664    0.003      15.598    0.103
1948.0      1.663    0.003      15.665    0.101
1949.0      1.661    0.003      15.732    0.100
1950.0      1.659    0.003      15.798    0.098
1951.0      1.658    0.003      15.865    0.097
1952.0      1.656    0.003      15.932    0.096
1953.0      1.655    0.003      16.000    0.094
1954.0      1.653    0.003      16.067    0.093
1955.0      1.652    0.003      16.134    0.091
1956.0      1.650    0.003      16.202    0.090
1957.0      1.649    0.003      16.270    0.088
1958.0      1.647    0.003      16.337    0.087
1959.0      1.646    0.003      16.405    0.086
1960.0      1.644    0.003      16.473    0.084
1961.0      1.643    0.003      16.542    0.083
1962.0      1.641    0.003      16.610    0.081
1963.0      1.640    0.002      16.678    0.080
1964.0      1.638    0.002      16.747    0.078
1965.0      1.637    0.002      16.816    0.077
1966.0      1.635    0.002      16.884    0.075
1967.0      1.634    0.002      16.953    0.074
1968.0      1.632    0.002      17.022    0.073
1969.0      1.631    0.002      17.092    0.071
1970.0      1.629    0.002      17.161    0.070
1971.0      1.628    0.002      17.230    0.068
1972.0      1.627    0.002      17.300    0.067
1973.0      1.625    0.002      17.369    0.065
1974.0      1.624    0.002      17.439    0.064
1975.0      1.622    0.002      17.509    0.062
1976.0      1.621    0.002      17.579    0.061
1977.0      1.619    0.002      17.649    0.059
1978.0      1.618    0.002      17.720    0.058
1979.0      1.616    0.002      17.790    0.056
1980.0      1.615    0.002      17.861    0.055
1981.0      1.613    0.002      17.932    0.053
1982.0      1.612    0.002      18.002    0.052
1983.0      1.610    0.002      18.073    0.051
1984.0      1.609    0.001      18.144    0.049
1985.0      1.608    0.001      18.216    0.048
1986.0      1.606    0.001      18.287    0.046
1987.0      1.605    0.001      18.358    0.045
1988.0      1.603    0.001      18.430    0.043
1989.0      1.602    0.001      18.502    0.042
1990.0      1.600    0.001      18.574    0.040
1991.0      1.599    0.001      18.645    0.039
1992.0      1.598    0.001      18.718    0.037
1993.0      1.596    0.001      18.790    0.035
1994.0      1.595    0.001      18.862    0.034
1995.0      1.593    0.001      18.935    0.032
1996.0      1.592    0.001      19.007    0.031
1997.0      1.591    0.001      19.080    0.029
1998.0      1.589    0.001      19.153    0.028
1999.0      1.588    0.001      19.226    0.026
2000.0      1.586    0.001      19.299    0.025
2001.0      1.585    0.001      19.372    0.023
2002.0      1.583    0.001      19.446    0.022
2003.0      1.582    0.001      19.519    0.020
2004.0      1.581    0.001      19.593    0.019
2005.0      1.579    0.001      19.667    0.017
2006.0      1.578    0.000      19.741    0.016
2007.0      1.577    0.000      19.815    0.014
2008.0      1.575    0.000      19.889    0.013
2009.0      1.574    0.000      19.963    0.011
2010.0      1.572    0.000      20.037    0.009
2011.0      1.571    0.000      20.112    0.008
2012.0      1.570    0.000      20.187    0.006
2013.0      1.568    0.000      20.262    0.005
2014.0      1.567    0.000      20.337    0.003
2015.0      1.566    0.000      20.412    0.002
2016.0      1.564    0.000      20.487    0.001
2017.0      1.563    0.000      20.562    0.002
2018.0      1.561    0.000      20.638    0.003
2019.0      1.560    0.000      20.713    0.005
2020.0      1.559    0.000      20.789    0.006
2021.0      1.557    0.000      20.865    0.008
2022.0      1.556    0.000      20.941    0.010
2023.0      1.555    0.000      21.017    0.011
2024.0      1.553    0.000      21.093    0.013
2025.0      1.552    0.000      21.170    0.014
2026.0      1.551    0.000      21.246    0.016
2027.0      1.549    0.001      21.323    0.017
2028.0      1.548    0.001      21.400    0.019
2029.0      1.547    0.001      21.477    0.021
2030.0      1.545    0.001      21.554    0.022
2031.0      1.544    0.001      21.631    0.024
2032.0      1.543    0.001      21.708    0.025
2033.0      1.541    0.001      21.786    0.027
2034.0      1.540    0.001      21.863    0.029
2035.0      1.539    0.001      21.941    0.030
2036.0      1.538    0.001      22.019    0.032
2037.0      1.536    0.001      22.097    0.033
2038.0      1.535    0.001      22.175    0.035
2039.0      1.534    0.001      22.253    0.037
2040.0      1.532    0.001      22.331    0.038
2041.0      1.531    0.001      22.410    0.040
2042.0      1.530    0.001      22.488    0.042
2043.0      1.528    0.001      22.567    0.043
2044.0      1.527    0.001      22.646    0.045
2045.0      1.526    0.001      22.725    0.046
2046.0      1.525    0.001      22.804    0.048
2047.0      1.523    0.001      22.884    0.050
2048.0      1.522    0.001      22.963    0.051
2049.0      1.521    0.002      23.043    0.053
2050.0      1.520    0.002      23.122    0.055
2051.0      1.518    0.002      23.202    0.056
2052.0      1.517    0.002      23.282    0.058
2053.0      1.516    0.002      23.362    0.060
2054.0      1.515    0.002      23.442    0.061
2055.0      1.513    0.002      23.523    0.063
2056.0      1.512    0.002      23.603    0.065
2057.0      1.511    0.002      23.684    0.066
2058.0      1.510    0.002      23.765    0.068
2059.0      1.508    0.002      23.846    0.070
2060.0      1.507    0.002      23.927    0.071
2061.0      1.506    0.002      24.008    0.073
2062.0      1.505    0.002      24.089    0.075
2063.0      1.503    0.002      24.171    0.076
2064.0      1.502    0.002      24.252    0.078
2065.0      1.501    0.002      24.334    0.080
2066.0      1.500    0.002      24.416    0.081
2067.0      1.499    0.002      24.498    0.083
2068.0      1.497    0.002      24.580    0.085
2069.0      1.496    0.002      24.662    0.086
2070.0      1.495    0.003      24.744    0.088
2071.0      1.494    0.003      24.827    0.090
2072.0      1.493    0.003      24.909    0.091
2073.0      1.491    0.003      24.992    0.093
2074.0      1.490    0.003      25.075    0.095
2075.0      1.489    0.003      25.158    0.096
2076.0      1.488    0.003      25.241    0.098
2077.0      1.487    0.003      25.324    0.100
2078.0      1.485    0.003      25.408    0.101
2079.0      1.484    0.003      25.491    0.103
2080.0      1.483    0.003      25.575    0.105
2081.0      1.482    0.003      25.659    0.107
2082.0      1.481    0.003      25.743    0.108
2083.0      1.480    0.003      25.827    0.110
2084.0      1.478    0.003      25.911    0.112
2085.0      1.477    0.003      25.995    0.113
2086.0      1.476    0.003      26.080    0.115
2087.0      1.475    0.003      26.164    0.117
2088.0      1.474    0.003      26.249    0.118
2089.0      1.473    0.003      26.334    0.120
2090.0      1.471    0.003      26.419    0.122
2091.0      1.470    0.003      26.504    0.124
2092.0      1.469    0.004      26.589    0.125
2093.0      1.468    0.004      26.675    0.127
2094.0      1.467    0.004      26.760    0.129
2095.0      1.466    0.004      26.846    0.131
2096.0      1.465    0.004      26.932    0.132
2097.0      1.464    0.004      27.018    0.134
2098.0      1.462    0.004      27.104    0.136
2099.0      1.461    0.004      27.190    0.137
2100.0      1.460    0.004      27.276    0.139




WDS record for STF 1964 CD
wds_id                       : 15382+3615
discoverer_code              : STF
discoverer_number            : 1964
discoverer_components        : CD
date_first                   : 1829
date_last                    : 2019
num_of_obs                   : 72
pa_first                     : 10
pa_last                      : 21
sep_first                    : 1.4
sep_last                     : 1.5
mag_primary                  : 8.06
mag_secondary                : 9.02
spectral_type                : F5
primary_proper_motion_RA     : -62
primary_proper_motion_DEC    : 43
secondary_proper_motion_RA   : -62
secondary_proper_motion_DEC  : 43
dm_number                    : 
notes                        : NO
precise_coordinate           : 153814.14+361449.7
                             : 15:38:14.14 +36:14:49.7

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


Orbital Elements for STF 1964 CD
WDS: STF 1964 CD WDS ID/Discoverer
P: 1230.000 Orbital period (years)
a: 1.582 Semi-major axis (arcseconds)
i: 78.4 Inclination (degrees)
Ω: 15.9 Longitude of ascending node (degrees)
T: 1955.300 Epoch of periastron passage (year)
e: 0.0 Eccentricity
ω: 0.0 Argument of periastron (degrees)
Start-Year: 1410.000 Year
End-Year: 2640.000 Year
Epoch: 2025.46 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF 1964 CD
Position: 153814.14+361449.7 Epoch-2000 right ascension and declination
WDS-ID: 15382+3615 WDS designation
Discoverer Code: STF 1964 CD Discover designation and components
ADS number: 9731 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 76566 Hipparcos catalog number
V1: 8.06 Magnitude of the primary
V2: 9.02 Magnitude of the secondary
Equinox: Equinox
Date: 1994 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
8 = Interferometric
9 = Astrometric
Flags: n Flags
Ephemerides: Ephemerides
Code: Dru1995 Reference

Double Star Orbit for STF 1964 CD



WDS 6th Orbit including measures of STF 1964 CD

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


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

Ephemeris of STF 1964 CD
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.46    1.486    20.21
--------------------------
1410.00    1.487   200.18
1420.00    1.458   200.86
1430.00    1.426   201.56
1440.00    1.390   202.31
1450.00    1.351   203.09
1460.00    1.308   203.92
1470.00    1.263   204.82
1480.00    1.214   205.78
1490.00    1.163   206.82
1500.00    1.109   207.96
1510.00    1.052   209.22
1520.00    0.994   210.63
1530.00    0.933   212.22
1540.00    0.871   214.03
1550.00    0.808   216.13
1560.00    0.743   218.58
1570.00    0.679   221.50
1580.00    0.615   225.03
1590.00    0.552   229.37
1600.00    0.491   234.81
1610.00    0.435   241.70
1620.00    0.386   250.49
1630.00    0.348   261.51
1640.00    0.324   274.69
1650.00    0.319   289.10
1660.00    0.332   303.14
1670.00    0.363   315.43
1680.00    0.407   325.44
1690.00    0.459   333.34
1700.00    0.518   339.54
1710.00    0.579   344.46
1720.00    0.643   348.41
1730.00    0.707   351.65
1740.00    0.772   354.35
1750.00    0.836   356.63
1760.00    0.899   358.60
1770.00    0.960     0.30
1780.00    1.020     1.81
1790.00    1.077     3.15
1800.00    1.133     4.35
1810.00    1.186     5.45
1820.00    1.236     6.46
1830.00    1.283     7.38
1840.00    1.327     8.25
1850.00    1.368     9.06
1860.00    1.406     9.82
1870.00    1.440    10.55
1880.00    1.471    11.25
1890.00    1.498    11.91
1900.00    1.522    12.56
1910.00    1.542    13.19
1920.00    1.557    13.80
1930.00    1.569    14.40
1940.00    1.577    15.00
1950.00    1.581    15.59
1960.00    1.582    16.18
1970.00    1.578    16.77
1980.00    1.570    17.36
1990.00    1.558    17.96
2000.00    1.543    18.58
2010.00    1.523    19.20
2020.00    1.500    19.85
2030.00    1.473    20.51
2040.00    1.442    21.21
2050.00    1.408    21.93
2060.00    1.371    22.69
2070.00    1.330    23.50
2080.00    1.286    24.36
2090.00    1.239    25.29
2100.00    1.189    26.29
2110.00    1.136    27.38
2120.00    1.081    28.58
2130.00    1.023    29.91
2140.00    0.964    31.40
2150.00    0.902    33.10
2160.00    0.840    35.04
2170.00    0.776    37.30
2180.00    0.711    39.97
2190.00    0.647    43.17
2200.00    0.583    47.08
2210.00    0.521    51.93
2220.00    0.463    58.05
2230.00    0.410    65.83
2240.00    0.366    75.71
2250.00    0.334    87.86
2260.00    0.319   101.83
2270.00    0.323   116.27
2280.00    0.346   129.56
2290.00    0.384   140.72
2300.00    0.432   149.63
2310.00    0.488   156.63
2320.00    0.548   162.14
2330.00    0.611   166.54
2340.00    0.675   170.11
2350.00    0.740   173.06
2360.00    0.804   175.54
2370.00    0.867   177.65
2380.00    0.929   179.48
2390.00    0.990   181.08
2400.00    1.049   182.50
2410.00    1.105   183.77
2420.00    1.159   184.91
2430.00    1.211   185.96
2440.00    1.260   186.93
2450.00    1.306   187.82
2460.00    1.348   188.66
2470.00    1.388   189.45
2480.00    1.424   190.19
2490.00    1.456   190.90
2500.00    1.485   191.58
2510.00    1.511   192.24
2520.00    1.532   192.88
2530.00    1.550   193.50
2540.00    1.564   194.10
2550.00    1.574   194.70
2560.00    1.580   195.29
2570.00    1.582   195.88
2580.00    1.580   196.47
2590.00    1.574   197.06
2600.00    1.565   197.66
2610.00    1.551   198.27
2620.00    1.533   198.89
2630.00    1.512   199.52
2640.00    1.487   200.18


Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1374656960858803072
source_id = 1374656960858803072
random_index = 1195942486
ref_epoch = 2016.0
ra = 234.5586255029276
ra_error = 0.015269214
dec = 36.24735880998665
dec_error = 0.017100561
parallax = 9.096969257287348
parallax_error = 0.019939706
parallax_over_error = 456.22385
pm = 75.17646
pmra = -59.73084138774923
pmra_error = 0.020391395
pmdec = 45.647856998866
pmdec_error = 0.02568093
ra_dec_corr = 0.21849655
ra_parallax_corr = -0.11607281
ra_pmra_corr = -0.08575825
ra_pmdec_corr = 0.0058327345
dec_parallax_corr = -0.04011677
dec_pmra_corr = 0.0011407804
dec_pmdec_corr = -0.10505617
parallax_pmra_corr = -0.07312112
parallax_pmdec_corr = 0.0005575105
pmra_pmdec_corr = 0.30697095
astrometric_n_obs_al = 398
astrometric_n_obs_ac = 398
astrometric_n_good_obs_al = 397
astrometric_n_bad_obs_al = 1
astrometric_gof_al = 1.8421576
astrometric_chi2_al = 1099.9156
astrometric_excess_noise = 0.16102114
astrometric_excess_noise_sig = 19.600727
astrometric_params_solved = 31
astrometric_primary_flag = true
nu_eff_used_in_astrometry = 1.6191139
astrometric_matched_transits = 45
visibility_periods_used = 29
astrometric_sigma5d_max = 0.037619155
matched_transits = 50
new_matched_transits = 17
matched_transits_removed = 6
ipd_gof_harmonic_amplitude = 0.045277517
ipd_gof_harmonic_phase = 12.628662
ipd_frac_multi_peak = 16
ipd_frac_odd_win = 0
ruwe = 1.0656389
duplicated_source = false
phot_g_n_obs = 402
phot_g_mean_flux = 12295089.448106712
phot_g_mean_flux_error = 4632.3174
phot_g_mean_flux_over_error = 2654.1985
phot_g_mean_mag = 7.9630375
phot_bp_n_obs = 43
phot_bp_mean_flux = 8353976.157093627
phot_bp_mean_flux_error = 132525.45
phot_bp_mean_flux_over_error = 63.036766
phot_bp_mean_mag = 8.033809
phot_rp_n_obs = 44
phot_rp_mean_flux = 8192313.252525141
phot_rp_mean_flux_error = 135913.0
phot_rp_mean_flux_over_error = 60.276157
phot_rp_mean_mag = 7.4643793
phot_bp_rp_excess_factor = 1.345764
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 43
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 44
phot_proc_mode = 0
bp_rp = 0.5694294
bp_g = 0.07077122
g_rp = 0.49865818
phot_variable_flag = NOT_AVAILABLE
l = 58.06244721678331
b = 53.66027161897207
ecl_lon = 218.17162272628767
ecl_lat = 53.49812696230281
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 = 1.5800538e-09
classprob_dsc_combmod_galaxy = 5.3488767e-13
classprob_dsc_combmod_star = 0.99950176
teff_gspphot = 6565.0293
teff_gspphot_lower = 6557.4185
teff_gspphot_upper = 6577.5723
logg_gspphot = 3.8554
logg_gspphot_lower = 3.8526
logg_gspphot_upper = 3.8584
mh_gspphot = -1.1895
mh_gspphot_lower = -1.1974
mh_gspphot_upper = -1.1709
distance_gspphot = 109.7399
distance_gspphot_lower = 109.4851
distance_gspphot_upper = 110.0105
azero_gspphot = 0.0058
azero_gspphot_lower = 0.0018
azero_gspphot_upper = 0.0123
ag_gspphot = 0.0051
ag_gspphot_lower = 0.0016
ag_gspphot_upper = 0.0108
ebpminrp_gspphot = 0.0028
ebpminrp_gspphot_lower = 0.0008
ebpminrp_gspphot_upper = 0.0059
libname_gspphot = MARCS
radial_velocity = -32.84
radial_velocity_error = 0.91
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1374656960861310336
source_id = 1374656960861310336
random_index = 943093911
ref_epoch = 2016.0
ra = 234.55881406672765
ra_error = 0.027408296
dec = 36.24776582681703
dec_error = 0.026493505
parallax = 9.087025113290208
parallax_error = 0.032172784
parallax_over_error = 282.44446
pm = 72.81793
pmra = -58.281100643281725
pmra_error = 0.038610246
pmdec = 43.6550604434318
pmdec_error = 0.039509866
ra_dec_corr = -0.09589387
ra_parallax_corr = 0.1215796
ra_pmra_corr = -0.13887104
ra_pmdec_corr = 0.2055301
dec_parallax_corr = -0.21431957
dec_pmra_corr = 0.15613517
dec_pmdec_corr = -0.26949367
parallax_pmra_corr = 0.049817983
parallax_pmdec_corr = 0.19153091
pmra_pmdec_corr = -0.014087057
astrometric_n_obs_al = 274
astrometric_n_obs_ac = 274
astrometric_n_good_obs_al = 274
astrometric_n_bad_obs_al = 0
astrometric_gof_al = 5.215534
astrometric_chi2_al = 2352.9927
astrometric_excess_noise = 0.25976112
astrometric_excess_noise_sig = 61.124336
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.62803
pseudocolour_error = 0.008308197
ra_pseudocolour_corr = -0.14869711
dec_pseudocolour_corr = -0.07943481
parallax_pseudocolour_corr = -0.16333596
pmra_pseudocolour_corr = -0.1543942
pmdec_pseudocolour_corr = -0.22094756
astrometric_matched_transits = 31
visibility_periods_used = 20
astrometric_sigma5d_max = 0.056133274
matched_transits = 36
new_matched_transits = 36
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.0534272
ipd_gof_harmonic_phase = 10.4998
ipd_frac_multi_peak = 7
ipd_frac_odd_win = 0
ruwe = 1.2322007
duplicated_source = false
phot_g_n_obs = 242
phot_g_mean_flux = 5083304.361569694
phot_g_mean_flux_error = 3394.8962
phot_g_mean_flux_over_error = 1497.3372
phot_g_mean_mag = 8.922002
phot_bp_n_obs = 7
phot_bp_mean_flux = 3393029.9660379523
phot_bp_mean_flux_error = 165156.45
phot_bp_mean_flux_over_error = 20.544338
phot_bp_mean_mag = 9.012073
phot_rp_n_obs = 6
phot_rp_mean_flux = 3612329.51955298
phot_rp_mean_flux_error = 280478.94
phot_rp_mean_flux_over_error = 12.879148
phot_rp_mean_mag = 8.353427
phot_bp_rp_excess_factor = 1.3781114
phot_bp_n_contaminated_transits = 2
phot_bp_n_blended_transits = 5
phot_rp_n_contaminated_transits = 3
phot_rp_n_blended_transits = 3
phot_proc_mode = 0
bp_rp = 0.65864563
bp_g = 0.090070724
g_rp = 0.5685749
phot_variable_flag = NOT_AVAILABLE
l = 58.0631225602251
b = 53.660102397236834
ecl_lon = 218.17159305076336
ecl_lat = 53.49856110131742
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 0
has_xp_continuous = false
has_xp_sampled = false
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = false
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 4.966183e-09
classprob_dsc_combmod_galaxy = 5.300111e-13
classprob_dsc_combmod_star = 0.99960834
radial_velocity = -34.31
radial_velocity_error = 0.88
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1374656960858803072
classprob_dsc_combmod_quasar = 1.5800538e-09
classprob_dsc_combmod_galaxy = 5.3488767e-13
classprob_dsc_combmod_star = 0.99950176
classprob_dsc_combmod_whitedwarf = 2.9259509e-08
classprob_dsc_combmod_binarystar = 0.0004982577
classprob_dsc_specmod_quasar = 0.00014754041
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9522421
classprob_dsc_specmod_whitedwarf = 0.00013919105
classprob_dsc_specmod_binarystar = 0.04747118
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 6565.0293
teff_gspphot_lower = 6557.4185
teff_gspphot_upper = 6577.5723
logg_gspphot = 3.8554
logg_gspphot_lower = 3.8526
logg_gspphot_upper = 3.8584
mh_gspphot = -1.1895
mh_gspphot_lower = -1.1974
mh_gspphot_upper = -1.1709
distance_gspphot = 109.7399
distance_gspphot_lower = 109.4851
distance_gspphot_upper = 110.0105
azero_gspphot = 0.0058
azero_gspphot_lower = 0.0018
azero_gspphot_upper = 0.0123
ag_gspphot = 0.0051
ag_gspphot_lower = 0.0016
ag_gspphot_upper = 0.0108
abp_gspphot = 0.0063
abp_gspphot_lower = 0.002
abp_gspphot_upper = 0.0133
arp_gspphot = 0.0035
arp_gspphot_lower = 0.0011
arp_gspphot_upper = 0.0074
ebpminrp_gspphot = 0.0028
ebpminrp_gspphot_lower = 0.0008
ebpminrp_gspphot_upper = 0.0059
mg_gspphot = 2.7173
mg_gspphot_lower = 2.7085
mg_gspphot_upper = 2.7229
radius_gspphot = 1.9358
radius_gspphot_lower = 1.9301
radius_gspphot_upper = 1.9412
logposterior_gspphot = -1675.9636
mcmcaccept_gspphot = 0.35545453
libname_gspphot = MARCS
teff_gspspec = 6781.0
teff_gspspec_lower = 6755.0
teff_gspspec_upper = 6807.0
logg_gspspec = 4.17
logg_gspspec_lower = 4.13
logg_gspspec_upper = 4.21
mh_gspspec = -0.4
mh_gspspec_lower = -0.44
mh_gspspec_upper = -0.38
alphafe_gspspec = 0.28
alphafe_gspspec_lower = 0.27
alphafe_gspspec_upper = 0.33
fem_gspspec = -0.11
fem_gspspec_lower = -0.2
fem_gspspec_upper = -0.03
fem_gspspec_nlines = 6
fem_gspspec_linescatter = 0.11
sife_gspspec = 0.05
sife_gspspec_lower = -0.03
sife_gspspec_upper = 0.14
sife_gspspec_nlines = 3
sife_gspspec_linescatter = 0.04
cafe_gspspec = 0.28
cafe_gspspec_lower = 0.24
cafe_gspspec_upper = 0.35
cafe_gspspec_nlines = 6
cafe_gspspec_linescatter = 0.02
feiim_gspspec = -0.23
feiim_gspspec_lower = -0.34
feiim_gspspec_upper = -0.13
feiim_gspspec_nlines = 1
feiim_gspspec_linescatter = 0.0
sfe_gspspec = 0.07
sfe_gspspec_lower = -0.01
sfe_gspspec_upper = 0.14
sfe_gspspec_nlines = 2
sfe_gspspec_linescatter = 0.03
nfe_gspspec = 0.1
nfe_gspspec_lower = -0.08
nfe_gspspec_upper = 0.22
nfe_gspspec_nlines = 2
nfe_gspspec_linescatter = 0.16
dibqf_gspspec = -1
flags_gspspec = 00100000000000199000000999900009999999999
logchisq_gspspec = -3.9804637
ew_espels_halpha = 0.27874509
ew_espels_halpha_uncertainty = 0.14406008
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.240047
flags_esphs = 91
spectraltype_esphs = F
activityindex_espcs = 0.009946224
activityindex_espcs_uncertainty = 0.00044227458
activityindex_espcs_input = M1
radius_flame = 1.9087951
radius_flame_lower = 1.8703262
radius_flame_upper = 1.9474254
lum_flame = 6.1014347
lum_flame_lower = 6.071136
lum_flame_upper = 6.1391993
mass_flame = 1.4505014
mass_flame_lower = 1.410452
mass_flame_upper = 1.4905915
age_flame = 2.1500463
age_flame_lower = 1.8213985
age_flame_upper = 2.4780655
flags_flame = 00
evolstage_flame = 262
gravredshift_flame = 0.31768173
gravredshift_flame_lower = 0.3164914
gravredshift_flame_upper = 0.3192996
bc_flame = 0.018659372
mh_msc = -0.04366806
mh_msc_upper = 0.29502133
mh_msc_lower = -0.2515333
azero_msc = 0.088127196
azero_msc_upper = 0.18752494
azero_msc_lower = 0.0
distance_msc = 110.41553
distance_msc_upper = 115.256836
distance_msc_lower = 105.976135
teff_msc1 = 6917.4956
teff_msc1_upper = 7004.5513
teff_msc1_lower = 6747.725
teff_msc2 = 5879.5615
teff_msc2_upper = 6055.592
teff_msc2_lower = 4813.673
logg_msc1 = 4.296932
logg_msc1_upper = 4.3345356
logg_msc1_lower = 4.2430687
logg_msc2 = 4.614009
logg_msc2_upper = 4.8639145
logg_msc2_lower = 3.9643612
ag_msc = 0.07725465
ag_msc_upper = 0.16499329
ag_msc_lower = 0.0
logposterior_msc = -27.895874
mcmcaccept_msc = 0.3165155
mcmcdrift_msc = 0.15404214
flags_msc = 0
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1374656960861310336
classprob_dsc_combmod_quasar = 4.966183e-09
classprob_dsc_combmod_galaxy = 5.300111e-13
classprob_dsc_combmod_star = 0.99960834
classprob_dsc_combmod_whitedwarf = 1.624677e-07
classprob_dsc_combmod_binarystar = 0.00039153
classprob_dsc_specmod_quasar = 0.00046801474
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9611059
classprob_dsc_specmod_whitedwarf = 0.0007800357
classprob_dsc_specmod_binarystar = 0.037645977
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
mh_msc = -0.2996722
mh_msc_upper = -0.18895924
mh_msc_lower = -0.4687658
azero_msc = 0.09539653
azero_msc_upper = 0.16853829
azero_msc_lower = 0.0
distance_msc = 110.01709
distance_msc_upper = 114.683914
distance_msc_lower = 106.15936
teff_msc1 = 6366.908
teff_msc1_upper = 6414.6426
teff_msc1_lower = 6260.951
teff_msc2 = 5149.8633
teff_msc2_upper = 6117.1436
teff_msc2_lower = 4586.2793
logg_msc1 = 4.593302
logg_msc1_upper = 4.6706686
logg_msc1_lower = 4.4279966
logg_msc2 = 4.4677243
logg_msc2_upper = 4.8011384
logg_msc2_lower = 4.330972
ag_msc = 0.08102738
ag_msc_upper = 0.14377981
ag_msc_lower = 0.0
logposterior_msc = 29.011253
mcmcaccept_msc = 0.30505967
mcmcdrift_msc = 0.09358686
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. 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 08:36:51 +0200



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