Double Star Calculator - Results


STFA 27 AB - Astrometric and kinematic properties
Gaia Source ID - Star A          : 1278391075717325312     Simbad
Gaia Source ID - Star B          : 1278392381386793856     Simbad
Observation Epoch : J2025.329 / 2025-05-01 Angular Separation : 104.897 ± 0.0009 arcsec Position Angle : 77.90 ± 0.0006 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 104.907 ± 0.0001 arcsec Position Angle : 77.91 ± 0.0001 degree Projected Separation : 3869 au Spatial Separation : 23510 ± 35207 au Parallax Significance : 0.65 σ 3D Space Velocity Angle : 0.40 ± 0.39 degree ΔProper Motion Angle : 0.11 ± 0.04 degree ΔTotal Proper Motion : 2.09 ± 0.11 mas/yr ΔTangential Velocity : 0.44 ± 0.12 km/s ΔRadial Velocity : 0.43 ± 0.20 km/s ΔSpeed (scalar) : 0.58 ± 0.14 km/s ΔRelative Velocity (3D) : 0.61 ± 0.15 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 1278391075717325312           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 15m 30.27s Declination (Dec) : 33° 18' 51.61" Distance : 36.93 ± 0.17 pc Distance : 120.47 ± 0.56 ly Magnitude (G-band) : 3.21 mag Absolute Magnitude : 0.37 ± 0.01 mag Stellar Extinction : N/A Spectral Type (BP/RP) : K Bolometric correction : -0.63 mag Luminosity : 99.62 + 0.93 / − 0.92 L☉ Log(Luminosity) : 1.99836 Teff (bp_rp) : 4800.00 K Log(Teff) : 3.68124 Mass estimation : 3.34 M☉ RUWE : 2.50 Position Angle of Proper Motion : 142.90 ± 0.04 degree Total Proper Motion : 139.90 ± 0.11 mas/yr Tangential Velocity : 24.50 ± 0.12 km/s Radial Velocity (Simbad) : -12.29 ± 0.16 km/s Bibcode : 2008A&A...480...91S Space Velocity : 27.41 ± 0.13 km/s

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

Star A - Double Star Quality Metrics
Parallax over error :    215.551 : very good
RUWE                :      2.500 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      3.211 : G > 3 mag, photometry reliable
Excess noise        :      1.027 : Poor fit
  Significance      :   2082.173 :   Possible binary or jitter
BP-RP excess factor :      1.112 : photometry consistent
Visibility periods  :         24 : 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                   : 1278392381386793856           VizieR
Epoch : J2016.000 Right Ascension (RA) : 15h 15m 38.45s Declination (Dec) : 33° 19' 13.56" Distance : 36.82 ± 0.02 pc Distance : 120.10 ± 0.08 ly Magnitude (G-band) : 7.68 mag Absolute Magnitude : 4.85 ± <0.01 mag Stellar Extinction : 0.00 ± <0.01 mag Spectral Type (BP/RP) : G Bolometric correction : -0.10 mag Luminosity : 1.00 + 0.00 / − 0.00 L☉ Log(Luminosity) : -0.00108 Effective temperature (Teff) : 5771.43 + 2.36 / - 2.30 K Log(Teff) : 3.76128 Mass estimation : 1.01 M☉ RUWE : 0.98 Position Angle of Proper Motion : 143.01 ± 0.01 degree Total Proper Motion : 137.81 ± 0.02 mas/yr Tangential Velocity : 24.06 ± 0.02 km/s Radial Velocity (Gaia) : -11.86 ± 0.13 km/s Space Velocity : 26.82 ± 0.06 km/s

Star B - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.15
Radius from GSP-Phot Aeneas      :       0.93  ±   0.00          R☉
Spectral type from ESP-ELS       :          G
Radius of the star from FLAME    :       0.93  ±   0.02          R☉
Bolometric correction            :       0.06                    mag
Luminosity of the star (FLAME)   :       0.86  ±   0.01          L☉
Mass of the star from FLAME      :       1.04  ±   0.04          M☉
FLAME quality indicators         :         00
  Quality                        :       OK
  Source                         :       Parallax used
Evolutionary stage from FLAME    :        105      Main Sequence (early)

Star B - Double Star Quality Metrics
Parallax over error :   1526.622 : very good
RUWE                :      0.980 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      7.678 : G > 3 mag, photometry reliable
Excess noise        :      0.122 : Good fit
  Significance      :     13.111 :   Minor noise, likely negligible
BP-RP excess factor :      1.203 : photometry consistent
Visibility periods  :         31 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.048 : 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)          :        0.02     (CPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.98     (Strong)
COMOV: Distance Evidence Indicator :        0.97     (Strong)
Co-Moving Total Evidence Indicator :        0.98     (Strong)

rPM/COMOV Agreement                :                 (High)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :        3869     au
Spatial Separation                 :       23510  ±    35207  au
  1-Sigma Range                    : [      3869,      58717] au
  Significance                     :        0.65     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 7738 au) : 5.4 % (2.0 * D-projected) P(D-3D <= 10000 au) : 8.7 % (Wide binary) P(D-3D <= 20000 au) : 24.1 % (Very wide binary) P(D-3D <= 20505 au) : 24.9 % (D-critical) P(D-3D <= 50000 au) : 68.3 % (Extremely wide) P(D-3D <= 206265 au) : 100.0 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.02     (CPM)
ΔRelative Velocity (3D)            :        0.61  ±  0.15   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.16     (Weak)
WBS: Distance Evidence Indicator   :        0.35     (Moderate)
Binarity Total Evidence Indicator  :        0.24     (Weak)


UWLE for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.72     (Strong)
WBS: Distance Evidence Indicator   :        0.49     (Moderate)
Binarity Total Evidence Indicator  :        0.59     (Moderate)

Orbital & Binding Dynamics         :
-----------------------------------
Est. orbital period at lower bound :   100014.00            years
Escape Velocity                    :        1.41            km/s (Bound)
3D Velocity Difference             :        0.61  ±  0.15   km/s
Circular Orbital Velocity          :        1.00            km/s
Binding Indicator η                :        0.19     (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) :  2.50 : Medium
RUWE probability for a binary system (Star B) :  0.98 : 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    105.032    0.012      78.025    0.007
1901.0    105.031    0.011      78.024    0.007
1902.0    105.030    0.011      78.023    0.007
1903.0    105.029    0.011      78.022    0.007
1904.0    105.028    0.011      78.021    0.007
1905.0    105.027    0.011      78.020    0.007
1906.0    105.025    0.011      78.019    0.007
1907.0    105.024    0.011      78.018    0.007
1908.0    105.023    0.011      78.018    0.007
1909.0    105.022    0.011      78.017    0.007
1910.0    105.021    0.011      78.016    0.007
1911.0    105.020    0.010      78.015    0.007
1912.0    105.019    0.010      78.014    0.007
1913.0    105.018    0.010      78.013    0.006
1914.0    105.017    0.010      78.012    0.006
1915.0    105.016    0.010      78.011    0.006
1916.0    105.015    0.010      78.010    0.006
1917.0    105.014    0.010      78.009    0.006
1918.0    105.013    0.010      78.008    0.006
1919.0    105.011    0.010      78.007    0.006
1920.0    105.010    0.010      78.006    0.006
1921.0    105.009    0.009      78.005    0.006
1922.0    105.008    0.009      78.004    0.006
1923.0    105.007    0.009      78.003    0.006
1924.0    105.006    0.009      78.002    0.006
1925.0    105.005    0.009      78.001    0.006
1926.0    105.004    0.009      78.000    0.006
1927.0    105.003    0.009      77.999    0.006
1928.0    105.002    0.009      77.998    0.006
1929.0    105.001    0.009      77.997    0.005
1930.0    105.000    0.009      77.996    0.005
1931.0    104.999    0.008      77.995    0.005
1932.0    104.997    0.008      77.994    0.005
1933.0    104.996    0.008      77.993    0.005
1934.0    104.995    0.008      77.992    0.005
1935.0    104.994    0.008      77.991    0.005
1936.0    104.993    0.008      77.990    0.005
1937.0    104.992    0.008      77.989    0.005
1938.0    104.991    0.008      77.988    0.005
1939.0    104.990    0.008      77.987    0.005
1940.0    104.989    0.008      77.986    0.005
1941.0    104.988    0.007      77.985    0.005
1942.0    104.987    0.007      77.985    0.005
1943.0    104.986    0.007      77.984    0.005
1944.0    104.985    0.007      77.983    0.005
1945.0    104.983    0.007      77.982    0.004
1946.0    104.982    0.007      77.981    0.004
1947.0    104.981    0.007      77.980    0.004
1948.0    104.980    0.007      77.979    0.004
1949.0    104.979    0.007      77.978    0.004
1950.0    104.978    0.007      77.977    0.004
1951.0    104.977    0.006      77.976    0.004
1952.0    104.976    0.006      77.975    0.004
1953.0    104.975    0.006      77.974    0.004
1954.0    104.974    0.006      77.973    0.004
1955.0    104.973    0.006      77.972    0.004
1956.0    104.972    0.006      77.971    0.004
1957.0    104.971    0.006      77.970    0.004
1958.0    104.969    0.006      77.969    0.004
1959.0    104.968    0.006      77.968    0.004
1960.0    104.967    0.006      77.967    0.004
1961.0    104.966    0.005      77.966    0.003
1962.0    104.965    0.005      77.965    0.003
1963.0    104.964    0.005      77.964    0.003
1964.0    104.963    0.005      77.963    0.003
1965.0    104.962    0.005      77.962    0.003
1966.0    104.961    0.005      77.961    0.003
1967.0    104.960    0.005      77.960    0.003
1968.0    104.959    0.005      77.959    0.003
1969.0    104.958    0.005      77.958    0.003
1970.0    104.957    0.005      77.957    0.003
1971.0    104.955    0.004      77.956    0.003
1972.0    104.954    0.004      77.955    0.003
1973.0    104.953    0.004      77.954    0.003
1974.0    104.952    0.004      77.953    0.003
1975.0    104.951    0.004      77.952    0.003
1976.0    104.950    0.004      77.952    0.003
1977.0    104.949    0.004      77.951    0.002
1978.0    104.948    0.004      77.950    0.002
1979.0    104.947    0.004      77.949    0.002
1980.0    104.946    0.004      77.948    0.002
1981.0    104.945    0.003      77.947    0.002
1982.0    104.944    0.003      77.946    0.002
1983.0    104.943    0.003      77.945    0.002
1984.0    104.942    0.003      77.944    0.002
1985.0    104.940    0.003      77.943    0.002
1986.0    104.939    0.003      77.942    0.002
1987.0    104.938    0.003      77.941    0.002
1988.0    104.937    0.003      77.940    0.002
1989.0    104.936    0.003      77.939    0.002
1990.0    104.935    0.003      77.938    0.002
1991.0    104.934    0.002      77.937    0.002
1992.0    104.933    0.002      77.936    0.002
1993.0    104.932    0.002      77.935    0.001
1994.0    104.931    0.002      77.934    0.001
1995.0    104.930    0.002      77.933    0.001
1996.0    104.929    0.002      77.932    0.001
1997.0    104.928    0.002      77.931    0.001
1998.0    104.926    0.002      77.930    0.001
1999.0    104.925    0.002      77.929    0.001
2000.0    104.924    0.002      77.928    0.001
2001.0    104.923    0.001      77.927    0.001
2002.0    104.922    0.001      77.926    0.001
2003.0    104.921    0.001      77.925    0.001
2004.0    104.920    0.001      77.924    0.001
2005.0    104.919    0.001      77.923    0.001
2006.0    104.918    0.001      77.922    0.001
2007.0    104.917    0.001      77.921    0.001
2008.0    104.916    0.001      77.920    0.001
2009.0    104.915    0.001      77.919    0.000
2010.0    104.914    0.001      77.918    0.000
2011.0    104.913    0.001      77.918    0.000
2012.0    104.911    0.000      77.917    0.000
2013.0    104.910    0.000      77.916    0.000
2014.0    104.909    0.000      77.915    0.000
2015.0    104.908    0.000      77.914    0.000
2016.0    104.907    0.000      77.913    0.000
2017.0    104.906    0.000      77.912    0.000
2018.0    104.905    0.000      77.911    0.000
2019.0    104.904    0.000      77.910    0.000
2020.0    104.903    0.000      77.909    0.000
2021.0    104.902    0.001      77.908    0.000
2022.0    104.901    0.001      77.907    0.000
2023.0    104.900    0.001      77.906    0.000
2024.0    104.899    0.001      77.905    0.001
2025.0    104.897    0.001      77.904    0.001
2026.0    104.896    0.001      77.903    0.001
2027.0    104.895    0.001      77.902    0.001
2028.0    104.894    0.001      77.901    0.001
2029.0    104.893    0.001      77.900    0.001
2030.0    104.892    0.001      77.899    0.001
2031.0    104.891    0.001      77.898    0.001
2032.0    104.890    0.002      77.897    0.001
2033.0    104.889    0.002      77.896    0.001
2034.0    104.888    0.002      77.895    0.001
2035.0    104.887    0.002      77.894    0.001
2036.0    104.886    0.002      77.893    0.001
2037.0    104.885    0.002      77.892    0.001
2038.0    104.884    0.002      77.891    0.001
2039.0    104.882    0.002      77.890    0.001
2040.0    104.881    0.002      77.889    0.002
2041.0    104.880    0.002      77.888    0.002
2042.0    104.879    0.003      77.887    0.002
2043.0    104.878    0.003      77.886    0.002
2044.0    104.877    0.003      77.885    0.002
2045.0    104.876    0.003      77.884    0.002
2046.0    104.875    0.003      77.883    0.002
2047.0    104.874    0.003      77.883    0.002
2048.0    104.873    0.003      77.882    0.002
2049.0    104.872    0.003      77.881    0.002
2050.0    104.871    0.003      77.880    0.002
2051.0    104.870    0.003      77.879    0.002
2052.0    104.868    0.004      77.878    0.002
2053.0    104.867    0.004      77.877    0.002
2054.0    104.866    0.004      77.876    0.002
2055.0    104.865    0.004      77.875    0.002
2056.0    104.864    0.004      77.874    0.003
2057.0    104.863    0.004      77.873    0.003
2058.0    104.862    0.004      77.872    0.003
2059.0    104.861    0.004      77.871    0.003
2060.0    104.860    0.004      77.870    0.003
2061.0    104.859    0.004      77.869    0.003
2062.0    104.858    0.005      77.868    0.003
2063.0    104.857    0.005      77.867    0.003
2064.0    104.856    0.005      77.866    0.003
2065.0    104.855    0.005      77.865    0.003
2066.0    104.853    0.005      77.864    0.003
2067.0    104.852    0.005      77.863    0.003
2068.0    104.851    0.005      77.862    0.003
2069.0    104.850    0.005      77.861    0.003
2070.0    104.849    0.005      77.860    0.003
2071.0    104.848    0.005      77.859    0.003
2072.0    104.847    0.006      77.858    0.004
2073.0    104.846    0.006      77.857    0.004
2074.0    104.845    0.006      77.856    0.004
2075.0    104.844    0.006      77.855    0.004
2076.0    104.843    0.006      77.854    0.004
2077.0    104.842    0.006      77.853    0.004
2078.0    104.841    0.006      77.852    0.004
2079.0    104.840    0.006      77.851    0.004
2080.0    104.838    0.006      77.850    0.004
2081.0    104.837    0.006      77.849    0.004
2082.0    104.836    0.007      77.848    0.004
2083.0    104.835    0.007      77.848    0.004
2084.0    104.834    0.007      77.847    0.004
2085.0    104.833    0.007      77.846    0.004
2086.0    104.832    0.007      77.845    0.004
2087.0    104.831    0.007      77.844    0.004
2088.0    104.830    0.007      77.843    0.005
2089.0    104.829    0.007      77.842    0.005
2090.0    104.828    0.007      77.841    0.005
2091.0    104.827    0.007      77.840    0.005
2092.0    104.826    0.008      77.839    0.005
2093.0    104.825    0.008      77.838    0.005
2094.0    104.823    0.008      77.837    0.005
2095.0    104.822    0.008      77.836    0.005
2096.0    104.821    0.008      77.835    0.005
2097.0    104.820    0.008      77.834    0.005
2098.0    104.819    0.008      77.833    0.005
2099.0    104.818    0.008      77.832    0.005
2100.0    104.817    0.008      77.831    0.005




Measurements for STFA 27 AB
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
15155+3319  STFA 27     AB    1    105.05"  --       B2025.334  HWI  120/900 APO   ASI678MM  

-- Image of STFA-27-AB-taken with Equinox 120/900 APO --


WDS record for STFA 27 AB
wds_id                       : 15155+3319
discoverer_code              : STFA
discoverer_number            : 27
discoverer_components        : AB
date_first                   : 1780
date_last                    : 2023
num_of_obs                   : 129
pa_first                     : 84
pa_last                      : 78
sep_first                    : 135.0
sep_last                     : 104.7
mag_primary                  : 3.56
mag_secondary                : 7.89
spectral_type                : G8III+G0V
primary_proper_motion_RA     : 85
primary_proper_motion_DEC    : -112
secondary_proper_motion_RA   : 82
secondary_proper_motion_DEC  : -110
dm_number                    : +33 2561
notes                        : NO T
precise_coordinate           : 151530.16+331853.4
                             : 15:15:30.16 +33:18:53.4

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


Orbital Elements for STFA 27 AB
WDS: STFA 27 AB WDS ID/Discoverer
P: 76000.000 Orbital period (years)
a: 78.0 Semi-major axis (arcseconds)
i: 74.0 Inclination (degrees)
Ω: 91.0 Longitude of ascending node (degrees)
T: 22775.000 Epoch of periastron passage (year)
e: 0.99 Eccentricity
ω: 136.0 Argument of periastron (degrees)
Start-Year: -35975.000 Year
End-Year: 40025.000 Year
Epoch: 2025.33 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STFA 27 AB
Position: 151530.16+331853.4 Epoch-2000 right ascension and declination
WDS-ID: 15155+3319 WDS designation
Discoverer Code: STFA 27 AB Discover designation and components
ADS number: 9559 Aitken Double Star catalog
HD number: 135722 HD catalog number
Hipparcos number: 74666 Hipparcos catalog number
V1: 3.56 Magnitude of the primary
V2: 7.89 Magnitude of the secondary
Equinox: Equinox
Date: 2005 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: Kis2009 Reference

Double Star Orbit for STFA 27 AB



WDS 6th Orbit including measures of STFA 27 AB

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


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

Ephemeris of STFA 27 AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.33   104.628    77.62
--------------------------
-36000.00   86.975    73.95
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0.00   107.703    77.42
100.00   107.564    77.43
200.00   107.424    77.44
300.00   107.282    77.44
400.00   107.139    77.45
500.00   106.995    77.46
600.00   106.849    77.47
700.00   106.702    77.48
800.00   106.554    77.49
900.00   106.404    77.50
1000.00   106.253    77.51
1100.00   106.101    77.52
1200.00   105.947    77.53
1300.00   105.792    77.54
1400.00   105.636    77.55
1500.00   105.478    77.56
1600.00   105.319    77.57
1700.00   105.159    77.58
1800.00   104.997    77.59
1900.00   104.834    77.60
2000.00   104.670    77.61
2100.00   104.504    77.62
2200.00   104.336    77.63
2300.00   104.168    77.65
2400.00   103.997    77.66
2500.00   103.826    77.67
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2800.00   103.303    77.70
2900.00   103.125    77.71
3000.00   102.947    77.72
3100.00   102.766    77.73
3200.00   102.585    77.74
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6700.00   95.253    78.14
6800.00   95.013    78.15
6900.00   94.772    78.16
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7600.00   93.035    78.25
7700.00   92.780    78.27
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8700.00   90.119    78.40
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12700.00   77.289    79.04
12800.00   76.916    79.06
12900.00   76.541    79.08
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13900.00   72.615    79.28
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14700.00   69.236    79.46
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14900.00   68.355    79.50
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16900.00   58.614    80.06
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17900.00   52.968    80.42
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19000.00   45.945    80.93
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19200.00   44.556    81.04
19300.00   43.846    81.09
19400.00   43.125    81.15
19500.00   42.393    81.21
19600.00   41.650    81.28
19700.00   40.895    81.34
19800.00   40.128    81.41
19900.00   39.347    81.48
20000.00   38.553    81.56
20100.00   37.745    81.63
20200.00   36.922    81.71
20300.00   36.084    81.80
20400.00   35.228    81.89
20500.00   34.356    81.98
20600.00   33.464    82.08
20700.00   32.554    82.18
20800.00   31.622    82.29
20900.00   30.668    82.40
21000.00   29.690    82.53
21100.00   28.686    82.66
21200.00   27.655    82.80
21300.00   26.593    82.95
21400.00   25.498    83.12
21500.00   24.367    83.30
21600.00   23.195    83.49
21700.00   21.978    83.71
21800.00   20.710    83.96
21900.00   19.383    84.24
22000.00   17.988    84.56
22100.00   16.513    84.94
22200.00   14.939    85.39
22300.00   13.243    85.96
22400.00   11.384    86.70
22500.00    9.296    87.75
22600.00    6.844    89.50
22700.00    3.642    93.82
22800.00    1.127   288.90
22900.00    1.496     8.13
23000.00    2.725    36.27
23100.00    4.031    46.46
23200.00    5.292    51.70
23300.00    6.498    54.95
23400.00    7.654    57.20
23500.00    8.765    58.87
23600.00    9.836    60.17
23700.00   10.872    61.22
23800.00   11.877    62.09
23900.00   12.854    62.82
24000.00   13.805    63.45
24100.00   14.733    64.00
24200.00   15.638    64.49
24300.00   16.524    64.92
24400.00   17.392    65.31
24500.00   18.242    65.67
24600.00   19.076    65.99
24700.00   19.895    66.28
24800.00   20.699    66.55
24900.00   21.490    66.81
25000.00   22.268    67.04
25100.00   23.034    67.26
25200.00   23.788    67.46
25300.00   24.531    67.66
25400.00   25.263    67.84
25500.00   25.986    68.01
25600.00   26.698    68.17
25700.00   27.402    68.32
25800.00   28.096    68.47
25900.00   28.781    68.61
26000.00   29.458    68.74
26100.00   30.128    68.86
26200.00   30.789    68.98
26300.00   31.443    69.10
26400.00   32.089    69.21
26500.00   32.729    69.32
26600.00   33.361    69.42
26700.00   33.987    69.52
26800.00   34.606    69.62
26900.00   35.219    69.71
27000.00   35.826    69.80
27100.00   36.427    69.88
27200.00   37.022    69.96
27300.00   37.612    70.05
27400.00   38.196    70.12
27500.00   38.774    70.20
27600.00   39.347    70.27
27700.00   39.915    70.34
27800.00   40.478    70.41
27900.00   41.037    70.48
28000.00   41.590    70.55
28100.00   42.138    70.61
28200.00   42.682    70.67
28300.00   43.221    70.73
28400.00   43.756    70.79
28500.00   44.287    70.85
28600.00   44.813    70.91
28700.00   45.335    70.96
28800.00   45.853    71.02
28900.00   46.367    71.07
29000.00   46.876    71.12
29100.00   47.382    71.17
29200.00   47.884    71.22
29300.00   48.383    71.27
29400.00   48.877    71.32
29500.00   49.368    71.36
29600.00   49.855    71.41
29700.00   50.339    71.45
29800.00   50.819    71.50
29900.00   51.296    71.54
30000.00   51.769    71.58
30100.00   52.239    71.62
30200.00   52.706    71.66
30300.00   53.170    71.70
30400.00   53.630    71.74
30500.00   54.087    71.78
30600.00   54.541    71.82
30700.00   54.992    71.86
30800.00   55.440    71.89
30900.00   55.885    71.93
31000.00   56.327    71.97
31100.00   56.766    72.00
31200.00   57.202    72.03
31300.00   57.635    72.07
31400.00   58.065    72.10
31500.00   58.493    72.14
31600.00   58.918    72.17
31700.00   59.340    72.20
31800.00   59.760    72.23
31900.00   60.177    72.26
32000.00   60.591    72.29
32100.00   61.003    72.32
32200.00   61.412    72.35
32300.00   61.818    72.38
32400.00   62.222    72.41
32500.00   62.624    72.44
32600.00   63.023    72.47
32700.00   63.419    72.50
32800.00   63.813    72.52
32900.00   64.205    72.55
33000.00   64.595    72.58
33100.00   64.982    72.61
33200.00   65.367    72.63
33300.00   65.749    72.66
33400.00   66.129    72.68
33500.00   66.507    72.71
33600.00   66.883    72.73
33700.00   67.256    72.76
33800.00   67.628    72.78
33900.00   67.997    72.81
34000.00   68.364    72.83
34100.00   68.728    72.86
34200.00   69.091    72.88
34300.00   69.452    72.90
34400.00   69.810    72.93
34500.00   70.167    72.95
34600.00   70.521    72.97
34700.00   70.873    72.99
34800.00   71.224    73.02
34900.00   71.572    73.04
35000.00   71.918    73.06
35100.00   72.263    73.08
35200.00   72.605    73.10
35300.00   72.945    73.12
35400.00   73.284    73.15
35500.00   73.621    73.17
35600.00   73.955    73.19
35700.00   74.288    73.21
35800.00   74.619    73.23
35900.00   74.948    73.25
36000.00   75.275    73.27
36100.00   75.601    73.29
36200.00   75.924    73.31
36300.00   76.246    73.33
36400.00   76.566    73.35
36500.00   76.884    73.36
36600.00   77.200    73.38
36700.00   77.515    73.40
36800.00   77.828    73.42
36900.00   78.139    73.44
37000.00   78.449    73.46
37100.00   78.756    73.48
37200.00   79.062    73.49
37300.00   79.367    73.51
37400.00   79.669    73.53
37500.00   79.970    73.55
37600.00   80.269    73.56
37700.00   80.567    73.58
37800.00   80.863    73.60
37900.00   81.157    73.62
38000.00   81.450    73.63
38100.00   81.741    73.65
38200.00   82.030    73.67
38300.00   82.318    73.68
38400.00   82.605    73.70
38500.00   82.889    73.72
38600.00   83.172    73.73
38700.00   83.454    73.75
38800.00   83.734    73.76
38900.00   84.012    73.78
39000.00   84.289    73.80
39100.00   84.565    73.81
39200.00   84.839    73.83
39300.00   85.111    73.84
39400.00   85.382    73.86
39500.00   85.651    73.87
39600.00   85.919    73.89
39700.00   86.185    73.90
39800.00   86.450    73.92
39900.00   86.713    73.93
40000.00   86.975    73.95
40100.00   87.236    73.96


Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1278391075717325312
source_id = 1278391075717325312
random_index = 364100855
ref_epoch = 2016.0
ra = 228.87612720122996
ra_error = 0.07679851
dec = 33.31433528392251
dec_error = 0.09278778
parallax = 27.074645953253125
parallax_error = 0.1256066
parallax_over_error = 215.55115
pm = 139.90323
pmra = 84.38252627225717
pmra_error = 0.09720906
pmdec = -111.5907867978561
pmdec_error = 0.11465344
ra_dec_corr = 0.369627
ra_parallax_corr = 0.021458317
ra_pmra_corr = 0.12789954
ra_pmdec_corr = 0.1885346
dec_parallax_corr = 0.044888932
dec_pmra_corr = 0.19337896
dec_pmdec_corr = 0.23699935
parallax_pmra_corr = -0.03350082
parallax_pmdec_corr = -0.04721721
pmra_pmdec_corr = 0.4829315
astrometric_n_obs_al = 389
astrometric_n_obs_ac = 389
astrometric_n_good_obs_al = 371
astrometric_n_bad_obs_al = 18
astrometric_gof_al = 34.22031
astrometric_chi2_al = 58840.0
astrometric_excess_noise = 1.0270344
astrometric_excess_noise_sig = 2082.1733
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.4202952
pseudocolour_error = 0.023547262
ra_pseudocolour_corr = -0.124467306
dec_pseudocolour_corr = 0.02221912
parallax_pseudocolour_corr = 0.16469514
pmra_pseudocolour_corr = 0.024170663
pmdec_pseudocolour_corr = -0.12877421
astrometric_matched_transits = 46
visibility_periods_used = 24
astrometric_sigma5d_max = 0.18311107
matched_transits = 46
new_matched_transits = 46
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.027288808
ipd_gof_harmonic_phase = 30.330112
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 2.5035481
duplicated_source = false
phot_g_n_obs = 348
phot_g_mean_flux = 978216001.4782152
phot_g_mean_flux_error = 1236909.2
phot_g_mean_flux_over_error = 790.8551
phot_g_mean_mag = 3.2112799
phot_bp_n_obs = 42
phot_bp_mean_flux = 388586905.23353183
phot_bp_mean_flux_error = 4991949.0
phot_bp_mean_flux_over_error = 77.84272
phot_bp_mean_mag = 3.864822
phot_rp_n_obs = 42
phot_rp_mean_flux = 699000652.3075981
phot_rp_mean_flux_error = 6411148.5
phot_rp_mean_flux_over_error = 109.02893
phot_rp_mean_mag = 2.6367016
phot_bp_rp_excess_factor = 1.1118071
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = 1.2281203
bp_g = 0.65354204
g_rp = 0.5745783
phot_variable_flag = NOT_AVAILABLE
l = 53.11146055142921
b = 58.43086994075083
ecl_lon = 213.1583203126269
ecl_lat = 48.96526259147822
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 0
has_xp_continuous = true
has_xp_sampled = true
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = false
has_mcmc_msc = true
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.3040742e-09
classprob_dsc_combmod_galaxy = 6.342658e-09
classprob_dsc_combmod_star = 0.99989676
radial_velocity = -12.29
radial_velocity_error = 0.16
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 1278392381386793856
source_id = 1278392381386793856
random_index = 1369485254
ref_epoch = 2016.0
ra = 228.91022774084
ra_error = 0.011086344
dec = 33.32043279543973
dec_error = 0.013185103
parallax = 27.15731055110921
parallax_error = 0.01778915
parallax_over_error = 1526.6222
pm = 137.81113
pmra = 82.9178372740424
pmra_error = 0.014788745
pmdec = -110.07514315414252
pmdec_error = 0.0167642
ra_dec_corr = 0.29652333
ra_parallax_corr = -0.20514815
ra_pmra_corr = 0.06446557
ra_pmdec_corr = 0.11081627
dec_parallax_corr = -0.072845854
dec_pmra_corr = 0.10587139
dec_pmdec_corr = 0.19225524
parallax_pmra_corr = -0.15478735
parallax_pmdec_corr = -0.21448204
pmra_pmdec_corr = 0.45312014
astrometric_n_obs_al = 555
astrometric_n_obs_ac = 555
astrometric_n_good_obs_al = 550
astrometric_n_bad_obs_al = 5
astrometric_gof_al = -0.51411897
astrometric_chi2_al = 1182.0098
astrometric_excess_noise = 0.122133695
astrometric_excess_noise_sig = 13.111403
astrometric_params_solved = 31
astrometric_primary_flag = true
nu_eff_used_in_astrometry = 1.5708977
astrometric_matched_transits = 63
visibility_periods_used = 31
astrometric_sigma5d_max = 0.026836323
matched_transits = 64
new_matched_transits = 21
matched_transits_removed = 1
ipd_gof_harmonic_amplitude = 0.047684845
ipd_gof_harmonic_phase = 26.200665
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.9838599
duplicated_source = false
phot_g_n_obs = 548
phot_g_mean_flux = 15980835.513858398
phot_g_mean_flux_error = 2278.1565
phot_g_mean_flux_over_error = 7014.81
phot_g_mean_mag = 7.678368
phot_bp_n_obs = 55
phot_bp_mean_flux = 8810463.76733042
phot_bp_mean_flux_error = 3367.89
phot_bp_mean_flux_over_error = 2616.019
phot_bp_mean_mag = 7.976045
phot_rp_n_obs = 50
phot_rp_mean_flux = 10418197.808242477
phot_rp_mean_flux_error = 4930.824
phot_rp_mean_flux_over_error = 2112.8716
phot_rp_mean_mag = 7.203414
phot_bp_rp_excess_factor = 1.2032325
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 = 0.77263117
bp_g = 0.29767704
g_rp = 0.47495413
radial_velocity = -11.8645935
radial_velocity_error = 0.12587798
rv_method_used = 1
rv_nb_transits = 32
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 24
rv_expected_sig_to_noise = 448.87796
rv_renormalised_gof = 0.9000443
rv_chisq_pvalue = 0.050242644
rv_time_duration = 950.2
rv_amplitude_robust = 1.0295639
rv_template_teff = 5750.0
rv_template_logg = 4.5
rv_template_fe_h = -0.5
rv_atm_param_origin = 222
grvs_mag = 7.020203
grvs_mag_error = 0.0051591443
grvs_mag_nb_transits = 32
phot_variable_flag = NOT_AVAILABLE
l = 53.12161502604574
b = 58.402218484924916
ecl_lon = 213.1944368606961
ecl_lat = 48.9822085252005
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 = 1.1961469e-13
classprob_dsc_combmod_galaxy = 5.974694e-13
classprob_dsc_combmod_star = 0.9982583
teff_gspphot = 5771.4297
teff_gspphot_lower = 5769.133
teff_gspphot_upper = 5773.7935
logg_gspphot = 4.404
logg_gspphot_lower = 4.4031
logg_gspphot_upper = 4.4078
mh_gspphot = -0.4276
mh_gspphot_lower = -0.4332
mh_gspphot_upper = -0.41
distance_gspphot = 36.6113
distance_gspphot_lower = 36.5139
distance_gspphot_upper = 36.6531
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0004
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0004
ebpminrp_gspphot = 0.0001
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0002
libname_gspphot = MARCS
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1278391075717325312
classprob_dsc_combmod_quasar = 1.3040742e-09
classprob_dsc_combmod_galaxy = 6.342658e-09
classprob_dsc_combmod_star = 0.99989676
classprob_dsc_combmod_whitedwarf = 1.3435182e-09
classprob_dsc_combmod_binarystar = 0.00010325141
classprob_dsc_specmod_quasar = 0.0001264866
classprob_dsc_specmod_galaxy = 0.00012316335
classprob_dsc_specmod_star = 0.98952544
classprob_dsc_specmod_whitedwarf = 6.6293724e-06
classprob_dsc_specmod_binarystar = 0.010218323
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
ew_espels_halpha = -0.0527571
ew_espels_halpha_uncertainty = 0.07615562
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.080443
flags_esphs = 91
spectraltype_esphs = G
mh_msc = -0.25037512
mh_msc_upper = 0.5
mh_msc_lower = -1.0
azero_msc = 0.13623488
azero_msc_upper = 0.29431668
azero_msc_lower = 0.0
distance_msc = 36.169453
distance_msc_upper = 48.922024
distance_msc_lower = 10.0
teff_msc1 = 4572.2686
teff_msc1_upper = 6783.704
teff_msc1_lower = 3000.0
teff_msc2 = 6232.185
teff_msc2_upper = 8000.0
teff_msc2_lower = 3000.0
logg_msc1 = 2.4385014
logg_msc1_upper = 5.2
logg_msc1_lower = 2.0
logg_msc2 = 3.659886
logg_msc2_upper = 5.2
logg_msc2_lower = 2.0
ag_msc = 0.10765907
ag_msc_upper = 0.2416945
ag_msc_lower = 0.0
logposterior_msc = -1724.2954
mcmcaccept_msc = 0.1930549
mcmcdrift_msc = 0.04263938
flags_msc = 1
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 1278392381386793856
classprob_dsc_combmod_quasar = 1.1961469e-13
classprob_dsc_combmod_galaxy = 5.974694e-13
classprob_dsc_combmod_star = 0.9982583
classprob_dsc_combmod_whitedwarf = 2.3478892e-12
classprob_dsc_combmod_binarystar = 0.0017417321
classprob_dsc_specmod_quasar = 0.0
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.8514392
classprob_dsc_specmod_whitedwarf = 0.0
classprob_dsc_specmod_binarystar = 0.14856084
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
teff_gspphot = 5771.4297
teff_gspphot_lower = 5769.133
teff_gspphot_upper = 5773.7935
logg_gspphot = 4.404
logg_gspphot_lower = 4.4031
logg_gspphot_upper = 4.4078
mh_gspphot = -0.4276
mh_gspphot_lower = -0.4332
mh_gspphot_upper = -0.41
distance_gspphot = 36.6113
distance_gspphot_lower = 36.5139
distance_gspphot_upper = 36.6531
azero_gspphot = 0.0001
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0004
ag_gspphot = 0.0001
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0004
abp_gspphot = 0.0001
abp_gspphot_lower = 0.0
abp_gspphot_upper = 0.0004
arp_gspphot = 0.0001
arp_gspphot_lower = 0.0
arp_gspphot_upper = 0.0003
ebpminrp_gspphot = 0.0001
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0002
mg_gspphot = 4.8424
mg_gspphot_lower = 4.8395
mg_gspphot_upper = 4.8491
radius_gspphot = 0.9251
radius_gspphot_lower = 0.9222
radius_gspphot_upper = 0.9263
logposterior_gspphot = -4574.1533
mcmcaccept_gspphot = 0.376489
libname_gspphot = MARCS
teff_gspspec = 5658.0
teff_gspspec_lower = 5642.0
teff_gspspec_upper = 5676.0
logg_gspspec = 4.12
logg_gspspec_lower = 4.09
logg_gspspec_upper = 4.15
mh_gspspec = -0.54
mh_gspspec_lower = -0.55
mh_gspspec_upper = -0.53
alphafe_gspspec = 0.24
alphafe_gspspec_lower = 0.23
alphafe_gspspec_upper = 0.24
fem_gspspec = -0.08
fem_gspspec_lower = -0.13
fem_gspspec_upper = -0.04
fem_gspspec_nlines = 6
fem_gspspec_linescatter = 0.06
sife_gspspec = 0.01
sife_gspspec_lower = -0.02
sife_gspspec_upper = 0.05
sife_gspspec_nlines = 3
sife_gspspec_linescatter = 0.08
cafe_gspspec = 0.22
cafe_gspspec_lower = 0.2
cafe_gspspec_upper = 0.23
cafe_gspspec_nlines = 7
cafe_gspspec_linescatter = 0.02
tife_gspspec = 0.07
tife_gspspec_lower = -0.07
tife_gspspec_upper = 0.24
tife_gspspec_nlines = 1
tife_gspspec_linescatter = 0.0
mgfe_gspspec = 0.34
mgfe_gspspec_lower = 0.23
mgfe_gspspec_upper = 0.45
mgfe_gspspec_nlines = 1
mgfe_gspspec_linescatter = 0.0
sfe_gspspec = 0.19
sfe_gspspec_lower = 0.12
sfe_gspspec_upper = 0.23
sfe_gspspec_nlines = 1
sfe_gspspec_linescatter = 0.0
nfe_gspspec = 0.35
nfe_gspspec_lower = 0.13
nfe_gspspec_upper = 0.5
nfe_gspspec_nlines = 1
nfe_gspspec_linescatter = 0.0
dibqf_gspspec = -1
flags_gspspec = 00000000000001210000000119900999999999999
logchisq_gspspec = -4.40683
ew_espels_halpha = 0.079872094
ew_espels_halpha_uncertainty = 0.015679998
ew_espels_halpha_flag = 0
ew_espels_halpha_model = 0.118371
flags_esphs = 93
spectraltype_esphs = G
activityindex_espcs = 0.024289683
activityindex_espcs_uncertainty = 9.687933e-05
activityindex_espcs_input = M1
radius_flame = 0.9258848
radius_flame_lower = 0.9071596
radius_flame_upper = 0.9446094
lum_flame = 0.8567457
lum_flame_lower = 0.85160154
lum_flame_upper = 0.86188304
mass_flame = 1.0379632
mass_flame_lower = 0.99794805
mass_flame_upper = 1.077978
flags_flame = 00
evolstage_flame = 105
gravredshift_flame = 0.5420961
gravredshift_flame_lower = 0.5415507
gravredshift_flame_upper = 0.54486006
bc_flame = 0.057819575
mh_msc = -0.03271208
mh_msc_upper = 0.0031560957
mh_msc_lower = -0.09850965
azero_msc = 0.0011642465
azero_msc_upper = 0.010951053
azero_msc_lower = 0.0
distance_msc = 42.225197
distance_msc_upper = 43.19184
distance_msc_lower = 41.78029
teff_msc1 = 5701.6885
teff_msc1_upper = 5717.328
teff_msc1_lower = 5686.244
teff_msc2 = 4857.419
teff_msc2_upper = 4944.5723
teff_msc2_lower = 4660.661
logg_msc1 = 4.499915
logg_msc1_upper = 4.5049744
logg_msc1_lower = 4.4934063
logg_msc2 = 4.5040464
logg_msc2_upper = 4.5452404
logg_msc2_lower = 4.46177
ag_msc = 0.0009501319
ag_msc_upper = 0.008942343
ag_msc_lower = 0.0
logposterior_msc = -56793.477
mcmcaccept_msc = 0.26818615
mcmcdrift_msc = 2.4426355
flags_msc = 1
neuron_oa_id = 202105281205440445
neuron_oa_dist = 8.85971e-06
neuron_oa_dist_percentile_rank = 75
flags_oa = 0012




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 08:49:27 +0200



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