Double Star Calculator - Results


STF 1066 - Astrometric and kinematic properties
Gaia Source ID - Star A          : 866177431955478144     Simbad
Gaia Source ID - Star B          : 866177431955017600     Simbad
Observation Epoch : J2025.165 / 2025-03-02 Angular Separation : 5.372 ± 0.0016 arcsec Position Angle : 230.64 ± 0.0169 degree
Star A/B Epoch : J2016.000 / J2016.000 Angular Separation : 5.535 ± 0.0002 arcsec Position Angle : 228.55 ± 0.0020 degree Projected Separation : 103 au Spatial Separation : 12907 ± 17439 au Parallax Significance : 0.74 σ 3D Space Velocity Angle : 59.91 ± 12.43 degree ΔProper Motion Angle : 53.20 ± 0.31 degree ΔTotal Proper Motion : 0.20 ± 0.18 mas/yr ΔTangential Velocity : 0.03 ± 0.02 km/s ΔRadial Velocity : 2.05 ± 2.07 km/s ΔSpeed (scalar) : 0.74 ± 1.25 km/s ΔRelative Velocity (3D) : 3.20 ± 1.32 km/s

Aladin Lite Sky Atlas



Star A - Stellar Data
Gaia Source ID                   : 866177431955478144           VizieR
Epoch : J2016.000 Right Ascension (RA) : 07h 20m 7.34s Declination (Dec) : 21° 58' 56.06" Distance : 18.60 ± 0.08 pc Distance : 60.66 ± 0.27 ly Magnitude (G-band) : 3.46 mag Absolute Magnitude : 2.11 ± 0.01 mag Stellar Extinction : N/A Spectral Type (BP/RP) : F Bolometric correction : -0.02 mag Luminosity : 11.48 + 0.10 / − 0.10 L☉ Log(Luminosity) : 1.06008 Teff (bp_rp) : 6700.00 K Log(Teff) : 3.82607 Mass estimation : 1.82 M☉ RUWE : 2.61 Position Angle of Proper Motion : 242.06 ± 0.30 degree Total Proper Motion : 31.38 ± 0.18 mas/yr Tangential Velocity : 2.77 ± 0.02 km/s Radial Velocity (Gaia) : 0.15 ± 0.54 km/s Space Velocity : 2.77 ± 0.04 km/s

Star A - Selected astrophysical parameters
DSC-Combmod binary star          :       0.00
DSC-Specmod binary star          :       0.01

Star A - Double Star Quality Metrics
Parallax over error :    223.775 : very good
RUWE                :      2.610 : poor astrometric fit, (possible double)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      3.457 : G > 3 mag, photometry reliable
Excess noise        :      0.991 : Good fit
  Significance      :   1213.792 :   Minor noise, likely negligible
BP-RP excess factor :      1.152 : photometry consistent
Visibility periods  :         11 : 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                   : 866177431955017600           VizieR
Epoch : J2016.000 Right Ascension (RA) : 07h 20m 7.04s Declination (Dec) : 21° 58' 52.40" Distance : 18.54 ± 0.02 pc Distance : 60.45 ± 0.05 ly Magnitude (G-band) : 7.97 mag Absolute Magnitude : 6.63 ± <0.01 mag Stellar Extinction : N/A Spectral Type (BP/RP) : K Bolometric correction : -0.63 mag Luminosity : 0.31 + 0.00 / − 0.00 L☉ Log(Luminosity) : -0.50449 Teff (bp_rp) : 4800.00 K Log(Teff) : 3.68124 Mass estimation : 0.85 M☉ RUWE : 1.10 Position Angle of Proper Motion : 295.26 ± 0.07 degree Total Proper Motion : 31.18 ± 0.04 mas/yr Tangential Velocity : 2.74 ± 0.00 km/s Radial Velocity (Simbad) : 2.20 ± 2.00 km/s Bibcode : 1953GCRV..C......0W Space Velocity : 3.51 ± 1.25 km/s

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

Star B - Double Star Quality Metrics
Parallax over error :   1192.810 : very good
RUWE                :      1.100 : good astrometric fit (single star)
Non Single Star     :            : Single Star
Duplicated source   :      false : single source
G magnitude         :      7.971 : G > 3 mag, photometry reliable
Excess noise        :      0.159 : Very good fit
  Significance      :      8.085 :   Reliable single-star astrometry
BP-RP excess factor :      1.413 : photometry inconsistent
Visibility periods  :         13 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.067 : 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)          :        0.89     (DPM)

Co-Moving

UWLE for Co-Moving Pairs (3D)      :
===================================
COMOV: Velocity Evidence Indicator :        0.66     (Moderate)
COMOV: Distance Evidence Indicator :        0.99     (Strong)
Co-Moving Total Evidence Indicator :        0.81     (Strong)

rPM/COMOV Agreement                :                 (Discrepant)

Binarity

Separation, Sigma and Reliability  :
===================================
Projected Separation               :         103     au
Spatial Separation                 :       12907  ±    17439  au
  1-Sigma Range                    : [       103,      30346] au
  Significance                     :        0.74     σ
  Note: 3D distance not significantly resolved

3D spatial distance probabilities : =================================== P(D-3D <= 206 au) : 0.2 % (2.0 * D-projected) P(D-3D <= 460 au) : 0.8 % (D-critical) P(D-3D <= 1000 au) : 2.1 % (Intermediate) P(D-3D <= 2500 au) : 5.7 % (Wide binary) P(D-3D <= 10000 au) : 26.3 % (Wide binary) P(D-3D <= 20000 au) : 55.5 % (Very wide binary) P(D-3D <= 50000 au) : 97.8 % (Extremely wide) P(D-3D <= 206265 au) : 100.0 % (Jacobi radius)

Proper Motion and Velocity         :
===================================
rPM (Proper Motion Ratio)          :        0.89     (DPM)
ΔRelative Velocity (3D)            :        3.20  ±  1.32   km/s

UWLE for Wide Binaries (3D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.00     (Unlikely)
WBS: Distance Evidence Indicator   :        0.60     (Moderate)
Binarity Total Evidence Indicator  :        0.04     (Unlikely)


UWLE for Wide Binaries (2D)        :
===================================
WBS: Velocity Evidence Indicator   :        0.78     (Strong)
WBS: Distance Evidence Indicator   :        0.75     (Strong)
Binarity Total Evidence Indicator  :        0.77     (Strong)

Orbital & Binding Dynamics         :
-----------------------------------
Est. orbital period at lower bound :      553.50            years
Escape Velocity                    :        6.78            km/s (Bound)
3D Velocity Difference             :        3.20  ±  1.32   km/s
Circular Orbital Velocity          :        4.79            km/s
Binding Indicator η                :        0.22     (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 : 0.78 (Strong) TBS: Distance Evidence Indicator : 0.99 (Strong) Binarity Total Evidence Indicator : 0.88 (Strong) Orbital & Binding Dynamics : ----------------------------------- Est. orbital period at lower bound : 553.50 years Escape Velocity : 6.78 km/s (Bound) 3D Velocity Difference : 3.20 ± 1.32 km/s Circular Orbital Velocity : 4.79 km/s Binding Indicator η : 0.22 (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) :  2.61 : Medium
RUWE probability for a binary system (Star B) :  1.10 : 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      8.034    0.020     210.637    0.149
1901.0      8.010    0.019     210.742    0.148
1902.0      7.987    0.019     210.848    0.148
1903.0      7.963    0.019     210.954    0.147
1904.0      7.939    0.019     211.061    0.146
1905.0      7.915    0.019     211.169    0.145
1906.0      7.892    0.019     211.277    0.144
1907.0      7.868    0.018     211.386    0.143
1908.0      7.844    0.018     211.495    0.142
1909.0      7.821    0.018     211.605    0.141
1910.0      7.797    0.018     211.716    0.140
1911.0      7.773    0.018     211.828    0.139
1912.0      7.750    0.018     211.940    0.138
1913.0      7.726    0.017     212.053    0.137
1914.0      7.703    0.017     212.166    0.136
1915.0      7.679    0.017     212.281    0.136
1916.0      7.656    0.017     212.396    0.135
1917.0      7.633    0.017     212.511    0.134
1918.0      7.609    0.017     212.628    0.133
1919.0      7.586    0.016     212.745    0.132
1920.0      7.563    0.016     212.862    0.131
1921.0      7.539    0.016     212.981    0.130
1922.0      7.516    0.016     213.100    0.129
1923.0      7.493    0.016     213.220    0.128
1924.0      7.470    0.016     213.341    0.127
1925.0      7.447    0.015     213.462    0.126
1926.0      7.424    0.015     213.585    0.125
1927.0      7.401    0.015     213.708    0.124
1928.0      7.378    0.015     213.831    0.122
1929.0      7.355    0.015     213.956    0.121
1930.0      7.332    0.015     214.081    0.120
1931.0      7.309    0.014     214.207    0.119
1932.0      7.286    0.014     214.334    0.118
1933.0      7.263    0.014     214.462    0.117
1934.0      7.240    0.014     214.590    0.116
1935.0      7.217    0.014     214.720    0.115
1936.0      7.195    0.014     214.850    0.114
1937.0      7.172    0.013     214.981    0.113
1938.0      7.149    0.013     215.113    0.112
1939.0      7.127    0.013     215.245    0.111
1940.0      7.104    0.013     215.379    0.109
1941.0      7.082    0.013     215.513    0.108
1942.0      7.059    0.013     215.648    0.107
1943.0      7.037    0.012     215.784    0.106
1944.0      7.014    0.012     215.921    0.105
1945.0      6.992    0.012     216.059    0.104
1946.0      6.970    0.012     216.198    0.103
1947.0      6.947    0.012     216.337    0.101
1948.0      6.925    0.012     216.478    0.100
1949.0      6.903    0.011     216.619    0.099
1950.0      6.881    0.011     216.761    0.098
1951.0      6.858    0.011     216.904    0.097
1952.0      6.836    0.011     217.049    0.095
1953.0      6.814    0.011     217.194    0.094
1954.0      6.792    0.011     217.340    0.093
1955.0      6.770    0.010     217.487    0.092
1956.0      6.748    0.010     217.634    0.090
1957.0      6.727    0.010     217.783    0.089
1958.0      6.705    0.010     217.933    0.088
1959.0      6.683    0.010     218.084    0.087
1960.0      6.661    0.010     218.236    0.085
1961.0      6.640    0.009     218.389    0.084
1962.0      6.618    0.009     218.542    0.083
1963.0      6.596    0.009     218.697    0.082
1964.0      6.575    0.009     218.853    0.080
1965.0      6.553    0.009     219.010    0.079
1966.0      6.532    0.009     219.168    0.078
1967.0      6.510    0.008     219.327    0.076
1968.0      6.489    0.008     219.487    0.075
1969.0      6.468    0.008     219.648    0.074
1970.0      6.447    0.008     219.810    0.072
1971.0      6.425    0.008     219.973    0.071
1972.0      6.404    0.008     220.137    0.069
1973.0      6.383    0.007     220.302    0.068
1974.0      6.362    0.007     220.469    0.067
1975.0      6.341    0.007     220.636    0.065
1976.0      6.320    0.007     220.805    0.064
1977.0      6.299    0.007     220.974    0.062
1978.0      6.279    0.007     221.145    0.061
1979.0      6.258    0.006     221.317    0.060
1980.0      6.237    0.006     221.490    0.058
1981.0      6.217    0.006     221.665    0.057
1982.0      6.196    0.006     221.840    0.055
1983.0      6.175    0.006     222.017    0.054
1984.0      6.155    0.006     222.195    0.052
1985.0      6.135    0.005     222.374    0.051
1986.0      6.114    0.005     222.554    0.049
1987.0      6.094    0.005     222.735    0.048
1988.0      6.074    0.005     222.918    0.046
1989.0      6.054    0.005     223.101    0.045
1990.0      6.033    0.005     223.286    0.043
1991.0      6.013    0.004     223.473    0.042
1992.0      5.993    0.004     223.660    0.040
1993.0      5.974    0.004     223.849    0.039
1994.0      5.954    0.004     224.039    0.037
1995.0      5.934    0.004     224.230    0.035
1996.0      5.914    0.003     224.423    0.034
1997.0      5.895    0.003     224.617    0.032
1998.0      5.875    0.003     224.812    0.031
1999.0      5.856    0.003     225.008    0.029
2000.0      5.836    0.003     225.206    0.027
2001.0      5.817    0.003     225.405    0.026
2002.0      5.797    0.002     225.605    0.024
2003.0      5.778    0.002     225.807    0.022
2004.0      5.759    0.002     226.010    0.021
2005.0      5.740    0.002     226.215    0.019
2006.0      5.721    0.002     226.420    0.017
2007.0      5.702    0.002     226.627    0.016
2008.0      5.683    0.001     226.836    0.014
2009.0      5.664    0.001     227.046    0.012
2010.0      5.646    0.001     227.257    0.011
2011.0      5.627    0.001     227.470    0.009
2012.0      5.609    0.001     227.684    0.007
2013.0      5.590    0.001     227.900    0.006
2014.0      5.572    0.000     228.117    0.004
2015.0      5.553    0.000     228.335    0.003
2016.0      5.535    0.000     228.555    0.002
2017.0      5.517    0.000     228.776    0.003
2018.0      5.499    0.000     228.999    0.004
2019.0      5.481    0.001     229.223    0.006
2020.0      5.463    0.001     229.449    0.008
2021.0      5.445    0.001     229.676    0.009
2022.0      5.428    0.001     229.904    0.011
2023.0      5.410    0.001     230.135    0.013
2024.0      5.392    0.001     230.366    0.015
2025.0      5.375    0.002     230.599    0.017
2026.0      5.358    0.002     230.834    0.018
2027.0      5.340    0.002     231.070    0.020
2028.0      5.323    0.002     231.308    0.022
2029.0      5.306    0.002     231.547    0.024
2030.0      5.289    0.002     231.788    0.026
2031.0      5.272    0.003     232.030    0.028
2032.0      5.255    0.003     232.274    0.030
2033.0      5.239    0.003     232.520    0.032
2034.0      5.222    0.003     232.767    0.034
2035.0      5.206    0.003     233.015    0.036
2036.0      5.189    0.004     233.265    0.038
2037.0      5.173    0.004     233.517    0.040
2038.0      5.157    0.004     233.770    0.042
2039.0      5.140    0.004     234.025    0.044
2040.0      5.124    0.004     234.282    0.046
2041.0      5.108    0.004     234.540    0.048
2042.0      5.093    0.005     234.800    0.050
2043.0      5.077    0.005     235.061    0.052
2044.0      5.061    0.005     235.324    0.054
2045.0      5.046    0.005     235.589    0.056
2046.0      5.031    0.005     235.855    0.058
2047.0      5.015    0.006     236.123    0.060
2048.0      5.000    0.006     236.392    0.062
2049.0      4.985    0.006     236.663    0.064
2050.0      4.970    0.006     236.936    0.066
2051.0      4.955    0.006     237.211    0.068
2052.0      4.941    0.006     237.487    0.070
2053.0      4.926    0.007     237.764    0.072
2054.0      4.911    0.007     238.044    0.075
2055.0      4.897    0.007     238.325    0.077
2056.0      4.883    0.007     238.607    0.079
2057.0      4.869    0.007     238.891    0.081
2058.0      4.855    0.008     239.177    0.083
2059.0      4.841    0.008     239.465    0.085
2060.0      4.827    0.008     239.754    0.087
2061.0      4.813    0.008     240.045    0.090
2062.0      4.800    0.008     240.337    0.092
2063.0      4.787    0.009     240.631    0.094
2064.0      4.773    0.009     240.927    0.096
2065.0      4.760    0.009     241.225    0.098
2066.0      4.747    0.009     241.524    0.101
2067.0      4.734    0.009     241.824    0.103
2068.0      4.722    0.009     242.127    0.105
2069.0      4.709    0.010     242.431    0.107
2070.0      4.696    0.010     242.736    0.110
2071.0      4.684    0.010     243.043    0.112
2072.0      4.672    0.010     243.352    0.114
2073.0      4.660    0.010     243.663    0.116
2074.0      4.648    0.011     243.975    0.119
2075.0      4.636    0.011     244.288    0.121
2076.0      4.624    0.011     244.603    0.123
2077.0      4.613    0.011     244.920    0.125
2078.0      4.602    0.011     245.239    0.128
2079.0      4.590    0.012     245.558    0.130
2080.0      4.579    0.012     245.880    0.132
2081.0      4.568    0.012     246.203    0.134
2082.0      4.558    0.012     246.528    0.137
2083.0      4.547    0.012     246.854    0.139
2084.0      4.536    0.012     247.181    0.141
2085.0      4.526    0.013     247.510    0.144
2086.0      4.516    0.013     247.841    0.146
2087.0      4.506    0.013     248.173    0.148
2088.0      4.496    0.013     248.507    0.151
2089.0      4.486    0.013     248.842    0.153
2090.0      4.477    0.014     249.178    0.155
2091.0      4.467    0.014     249.516    0.158
2092.0      4.458    0.014     249.856    0.160
2093.0      4.449    0.014     250.196    0.162
2094.0      4.440    0.014     250.538    0.164
2095.0      4.431    0.015     250.882    0.167
2096.0      4.422    0.015     251.227    0.169
2097.0      4.414    0.015     251.573    0.171
2098.0      4.405    0.015     251.921    0.174
2099.0      4.397    0.015     252.269    0.176
2100.0      4.389    0.016     252.619    0.178




Measurements for STF 1066

WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
-------------------------------------------------------------------------------------------------
07201+2159  STF 1066          1    5.40"    299.5°   B2025.169  HWI  120/900 APO   ASI678MM  

-- Image of STF-1066-taken with Equinox 120/900 APO --


WDS record for STF 1066
wds_id                       : 07201+2159
discoverer_code              : STF
discoverer_number            : 1066
discoverer_components        : 
date_first                   : 1822
date_last                    : 2018
num_of_obs                   : 275
pa_first                     : 198
pa_last                      : 229
sep_first                    : 7.1
sep_last                     : 5.5
mag_primary                  : 3.55
mag_secondary                : 8.18
spectral_type                : F2V+K6V
primary_proper_motion_RA     : -28
primary_proper_motion_DEC    : -15
secondary_proper_motion_RA   : -28
secondary_proper_motion_DEC  : -13
dm_number                    : +22 1645
notes                        : NO T
precise_coordinate           : 072007.39+215856.4
                             : 07:20:07.39 +21:58:56.4

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 STF 1066
WDS: STF 1066 WDS ID/Discoverer
P: 1418.438 Orbital period (years)
a: 7.76117 Semi-major axis (arcseconds)
i: 51.036 Inclination (degrees)
Ω: 70.828 Longitude of ascending node (degrees)
T: 2150.983 Epoch of periastron passage (year)
e: 0.70913 Eccentricity
ω: 268.361 Argument of periastron (degrees)
Start-Year: 1315.781 Year
End-Year: 2734.219 Year
Epoch: 2025.16 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF 1066
Position: 072007.39+215856.4 Epoch-2000 right ascension and declination
WDS-ID: 07201+2159 WDS designation
Discoverer Code: STF 1066 Discover designation and components
ADS number: 5983 Aitken Double Star catalog
HD number: 56986 HD catalog number
Hipparcos number: 35550 Hipparcos catalog number
V1: 3.55 Magnitude of the primary
V2: 8.18 Magnitude of the secondary
Equinox: Equinox
Date: 2013 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: Izm2019 Reference

Double Star Orbit for STF 1066



WDS 6th Orbit including measures of STF 1066

-- 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 1066
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.16    5.406   230.30
--------------------------
1310.00    8.318   145.40
1320.00    8.326   146.38
1330.00    8.333   147.36
1340.00    8.339   148.33
1350.00    8.344   149.31
1360.00    8.348   150.28
1370.00    8.352   151.25
1380.00    8.354   152.22
1390.00    8.355   153.19
1400.00    8.355   154.16
1410.00    8.355   155.14
1420.00    8.353   156.11
1430.00    8.351   157.08
1440.00    8.347   158.05
1450.00    8.343   159.02
1460.00    8.338   160.00
1470.00    8.332   160.97
1480.00    8.325   161.95
1490.00    8.318   162.93
1500.00    8.309   163.91
1510.00    8.300   164.89
1520.00    8.289   165.88
1530.00    8.278   166.87
1540.00    8.266   167.86
1550.00    8.253   168.85
1560.00    8.239   169.85
1570.00    8.225   170.85
1580.00    8.209   171.85
1590.00    8.192   172.86
1600.00    8.174   173.87
1610.00    8.156   174.89
1620.00    8.136   175.91
1630.00    8.115   176.94
1640.00    8.093   177.97
1650.00    8.070   179.01
1660.00    8.046   180.05
1670.00    8.020   181.10
1680.00    7.994   182.16
1690.00    7.965   183.22
1700.00    7.936   184.29
1710.00    7.905   185.38
1720.00    7.873   186.46
1730.00    7.839   187.56
1740.00    7.804   188.67
1750.00    7.767   189.79
1760.00    7.728   190.92
1770.00    7.687   192.06
1780.00    7.644   193.21
1790.00    7.600   194.38
1800.00    7.553   195.56
1810.00    7.503   196.76
1820.00    7.452   197.97
1830.00    7.397   199.20
1840.00    7.340   200.45
1850.00    7.280   201.71
1860.00    7.217   203.00
1870.00    7.151   204.32
1880.00    7.081   205.66
1890.00    7.007   207.02
1900.00    6.929   208.42
1910.00    6.847   209.85
1920.00    6.760   211.31
1930.00    6.667   212.81
1940.00    6.569   214.36
1950.00    6.465   215.96
1960.00    6.354   217.61
1970.00    6.235   219.32
1980.00    6.109   221.10
1990.00    5.973   222.95
2000.00    5.827   224.90
2010.00    5.669   226.95
2020.00    5.499   229.13
2030.00    5.315   231.44
2040.00    5.114   233.94
2050.00    4.894   236.64
2060.00    4.653   239.62
2070.00    4.386   242.93
2080.00    4.091   246.71
2090.00    3.761   251.11
2100.00    3.394   256.41
2110.00    2.984   263.08
2120.00    2.535   272.03
2130.00    2.067   284.96
2140.00    1.647   305.07
2150.00    1.425   334.93
2160.00    1.545     6.97
2170.00    1.925    30.12
2180.00    2.393    44.87
2190.00    2.859    54.76
2200.00    3.292    61.95
2210.00    3.684    67.52
2220.00    4.038    72.07
2230.00    4.356    75.92
2240.00    4.644    79.27
2250.00    4.905    82.24
2260.00    5.144    84.93
2270.00    5.362    87.38
2280.00    5.562    89.65
2290.00    5.747    91.77
2300.00    5.917    93.77
2310.00    6.076    95.65
2320.00    6.223    97.44
2330.00    6.360    99.16
2340.00    6.488   100.80
2350.00    6.608   102.38
2360.00    6.720   103.91
2370.00    6.825   105.38
2380.00    6.923   106.82
2390.00    7.016   108.21
2400.00    7.104   109.57
2410.00    7.186   110.90
2420.00    7.263   112.20
2430.00    7.336   113.47
2440.00    7.405   114.72
2450.00    7.470   115.94
2460.00    7.532   117.15
2470.00    7.590   118.33
2480.00    7.644   119.50
2490.00    7.696   120.65
2500.00    7.745   121.79
2510.00    7.791   122.92
2520.00    7.835   124.03
2530.00    7.876   125.12
2540.00    7.914   126.21
2550.00    7.951   127.29
2560.00    7.985   128.36
2570.00    8.018   129.41
2580.00    8.048   130.46
2590.00    8.077   131.51
2600.00    8.104   132.54
2610.00    8.129   133.57
2620.00    8.152   134.59
2630.00    8.174   135.61
2640.00    8.195   136.62
2650.00    8.214   137.63
2660.00    8.231   138.63
2670.00    8.248   139.63
2680.00    8.263   140.63
2690.00    8.276   141.62
2700.00    8.289   142.61
2710.00    8.300   143.59
2720.00    8.310   144.57
2730.00    8.319   145.55
2740.00    8.327   146.53


Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 866177431955478144
source_id = 866177431955478144
random_index = 319192994
ref_epoch = 2016.0
ra = 110.03059448904996
ra_error = 0.18997906
dec = 21.982238707455554
dec_error = 0.20598611
parallax = 53.769203794860104
parallax_error = 0.24028201
parallax_over_error = 223.77539
pm = 31.379292
pmra = -27.72219816147847
pmra_error = 0.18250038
pmdec = -14.70169052772772
pmdec_error = 0.15746845
ra_dec_corr = -0.52792275
ra_parallax_corr = 0.17094146
ra_pmra_corr = -0.24575122
ra_pmdec_corr = 0.4318916
dec_parallax_corr = -0.63255936
dec_pmra_corr = 0.262589
dec_pmdec_corr = -0.29545435
parallax_pmra_corr = 0.10641824
parallax_pmdec_corr = -0.10784911
pmra_pmdec_corr = -0.3347063
astrometric_n_obs_al = 121
astrometric_n_obs_ac = 121
astrometric_n_good_obs_al = 118
astrometric_n_bad_obs_al = 3
astrometric_gof_al = 20.179638
astrometric_chi2_al = 18768.42
astrometric_excess_noise = 0.99054015
astrometric_excess_noise_sig = 1213.7916
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.5036336
pseudocolour_error = 0.045043748
ra_pseudocolour_corr = -0.37509456
dec_pseudocolour_corr = 0.27622008
parallax_pseudocolour_corr = -0.21554974
pmra_pseudocolour_corr = -0.10980601
pmdec_pseudocolour_corr = 0.00057495467
astrometric_matched_transits = 14
visibility_periods_used = 11
astrometric_sigma5d_max = 0.312193
matched_transits = 16
new_matched_transits = 16
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.026896734
ipd_gof_harmonic_phase = 105.46303
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 2.6125383
duplicated_source = false
phot_g_n_obs = 109
phot_g_mean_flux = 780002900.7196821
phot_g_mean_flux_error = 1411983.9
phot_g_mean_flux_over_error = 552.4163
phot_g_mean_mag = 3.4571264
phot_bp_n_obs = 14
phot_bp_mean_flux = 455001960.19369006
phot_bp_mean_flux_error = 5031855.0
phot_bp_mean_flux_over_error = 90.4243
phot_bp_mean_mag = 3.693509
phot_rp_n_obs = 13
phot_rp_mean_flux = 443691306.456972
phot_rp_mean_flux_error = 1667530.4
phot_rp_mean_flux_over_error = 266.0769
phot_rp_mean_mag = 3.1301932
phot_bp_rp_excess_factor = 1.1521666
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 = 0.56331587
bp_g = 0.23638272
g_rp = 0.32693315
radial_velocity = 0.15482982
radial_velocity_error = 0.5414069
rv_method_used = 1
rv_nb_transits = 5
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 5
rv_expected_sig_to_noise = 1099.5164
rv_chisq_pvalue = 9.778396e-06
rv_time_duration = 784.4803
rv_amplitude_robust = 2.5336943
rv_template_teff = 7000.0
rv_template_logg = 4.0
rv_template_fe_h = -0.25
rv_atm_param_origin = 555
grvs_mag = 2.9990056
grvs_mag_error = 0.0057378877
grvs_mag_nb_transits = 5
phot_variable_flag = NOT_AVAILABLE
l = 195.98492486466918
b = 15.884939698459377
ecl_lon = 108.51919123653224
ecl_lat = -0.17848233789566362
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 = 5.737437e-08
classprob_dsc_combmod_galaxy = 5.181949e-13
classprob_dsc_combmod_star = 0.99988866
    Star B - gaiadr3.gaia_source
solution_id = 1636148068921376768
designation = Gaia DR3 866177431955017600
source_id = 866177431955017600
random_index = 660016910
ref_epoch = 2016.0
ra = 110.02935159815317
ra_error = 0.033949975
dec = 21.981220981917716
dec_error = 0.03558669
parallax = 53.95071404890075
parallax_error = 0.04522994
parallax_over_error = 1192.8097
pm = 31.17767
pmra = -28.195745833740947
pmra_error = 0.041210197
pmdec = 13.305901895708907
pmdec_error = 0.034184467
ra_dec_corr = -0.45982555
ra_parallax_corr = 0.19465758
ra_pmra_corr = -0.041593574
ra_pmdec_corr = 0.10411834
dec_parallax_corr = -0.5933374
dec_pmra_corr = -0.08489849
dec_pmdec_corr = -0.060692865
parallax_pmra_corr = 0.2794272
parallax_pmdec_corr = 0.013951655
pmra_pmdec_corr = -0.38147193
astrometric_n_obs_al = 134
astrometric_n_obs_ac = 134
astrometric_n_good_obs_al = 132
astrometric_n_bad_obs_al = 2
astrometric_gof_al = 1.6081473
astrometric_chi2_al = 324.5062
astrometric_excess_noise = 0.15909724
astrometric_excess_noise_sig = 8.085076
astrometric_params_solved = 31
astrometric_primary_flag = true
nu_eff_used_in_astrometry = 1.4991102
astrometric_matched_transits = 15
visibility_periods_used = 13
astrometric_sigma5d_max = 0.06292631
matched_transits = 15
new_matched_transits = 4
matched_transits_removed = 3
ipd_gof_harmonic_amplitude = 0.06740196
ipd_gof_harmonic_phase = 80.211945
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.0998721
duplicated_source = false
phot_g_n_obs = 131
phot_g_mean_flux = 12202542.88348904
phot_g_mean_flux_error = 19329.691
phot_g_mean_flux_over_error = 631.2849
phot_g_mean_mag = 7.971241
phot_bp_n_obs = 9
phot_bp_mean_flux = 6458183.271100071
phot_bp_mean_flux_error = 37428.24
phot_bp_mean_flux_over_error = 172.54842
phot_bp_mean_mag = 8.313267
phot_rp_n_obs = 8
phot_rp_mean_flux = 10783676.392328396
phot_rp_mean_flux_error = 171663.12
phot_rp_mean_flux_over_error = 62.81883
phot_rp_mean_mag = 7.1659784
phot_bp_rp_excess_factor = 1.4129727
phot_bp_n_contaminated_transits = 2
phot_bp_n_blended_transits = 0
phot_rp_n_contaminated_transits = 3
phot_rp_n_blended_transits = 1
phot_proc_mode = 0
bp_rp = 1.1472883
bp_g = 0.34202576
g_rp = 0.80526257
phot_variable_flag = NOT_AVAILABLE
l = 195.98542132552873
b = 15.88347815959122
ecl_lon = 108.51818810093302
ecl_lat = -0.1796475997110377
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 = 1.7650231e-10
classprob_dsc_combmod_galaxy = 6.899421e-10
classprob_dsc_combmod_star = 0.99999696
radial_velocity = 2.2
radial_velocity_error = 2.0
- gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 866177431955478144
classprob_dsc_combmod_quasar = 5.737437e-08
classprob_dsc_combmod_galaxy = 5.181949e-13
classprob_dsc_combmod_star = 0.99988866
classprob_dsc_combmod_whitedwarf = 4.6953964e-08
classprob_dsc_combmod_binarystar = 0.00011126137
classprob_dsc_specmod_quasar = 0.0055303816
classprob_dsc_specmod_galaxy = 0.0
classprob_dsc_specmod_star = 0.9832973
classprob_dsc_specmod_whitedwarf = 0.0002305676
classprob_dsc_specmod_binarystar = 0.010941817
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
activityindex_espcs_input = M2
mh_msc = -0.69435114
mh_msc_upper = -0.61364883
mh_msc_lower = -0.7476049
azero_msc = 0.2023628
azero_msc_upper = 0.24983984
azero_msc_lower = 0.16345021
distance_msc = 18.547825
distance_msc_upper = 19.835876
distance_msc_lower = 17.690834
teff_msc1 = 6999.187
teff_msc1_upper = 7166.858
teff_msc1_lower = 6844.68
teff_msc2 = 5561.042
teff_msc2_upper = 5941.213
teff_msc2_lower = 5317.087
logg_msc1 = 4.1098003
logg_msc1_upper = 4.170807
logg_msc1_lower = 4.0426617
logg_msc2 = 3.9280787
logg_msc2_upper = 4.3585315
logg_msc2_lower = 3.3951583
ag_msc = 0.17520718
ag_msc_upper = 0.2162958
ag_msc_lower = 0.13613291
logposterior_msc = -221.1517
mcmcaccept_msc = 0.26494032
mcmcdrift_msc = 0.35265183
flags_msc = 0
    - gaiadr3.astrophysical_parameters
solution_id = 1636148068921376768
source_id = 866177431955017600
classprob_dsc_combmod_quasar = 1.7650231e-10
classprob_dsc_combmod_galaxy = 6.899421e-10
classprob_dsc_combmod_star = 0.99999696
classprob_dsc_combmod_whitedwarf = 2.6463733e-09
classprob_dsc_combmod_binarystar = 3.0964013e-06
classprob_dsc_specmod_quasar = 1.7284297e-05
classprob_dsc_specmod_galaxy = 1.3524247e-05
classprob_dsc_specmod_star = 0.9996465
classprob_dsc_specmod_whitedwarf = 1.3200235e-05
classprob_dsc_specmod_binarystar = 0.00030953035
classprob_dsc_allosmod_quasar = 0.0
classprob_dsc_allosmod_galaxy = 0.0
classprob_dsc_allosmod_star = 1.0
mh_msc = -0.680969
mh_msc_upper = -0.5536332
mh_msc_lower = -1.0
azero_msc = 0.107111275
azero_msc_upper = 1.2929933
azero_msc_lower = 0.0
distance_msc = 18.642166
distance_msc_upper = 19.169357
distance_msc_lower = 18.177288
teff_msc1 = 4610.2383
teff_msc1_upper = 4698.993
teff_msc1_lower = 4286.171
teff_msc2 = 3852.98
teff_msc2_upper = 4965.524
teff_msc2_lower = 3556.503
logg_msc1 = 4.9785767
logg_msc1_upper = 5.108033
logg_msc1_lower = 4.151579
logg_msc2 = 4.995064
logg_msc2_upper = 5.2
logg_msc2_lower = 2.3458328
ag_msc = 0.082363956
ag_msc_upper = 0.9762309
ag_msc_lower = 0.0
logposterior_msc = -665.6279
mcmcaccept_msc = 0.2532697
mcmcdrift_msc = 0.060631692
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 08:28:35 +0200



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