Double Star Calculator - Results

Discoverer & Number:

STFA 27 AB

Gaia Source ID - Star A          : 1278391075717325312    Simbad
Gaia Source ID - Star B          : 1278392381386793856    Simbad

Observation Epoch                : J 2025.329  /  2025-05-01
Angular Separation               :    104.897" ±   0.7858 mas
Position Angle                   :      77.90  ±  0.00060 degrees

Star A/B Epoch                   : J 2016.000  /   J 2016.000
Angular Separation               :    104.907" ±   0.0664 mas
Position Angle                   :      77.91  ±  0.00005 degrees
Projected Separation (AU)        :    3862.94             AU
Spatial Separation   (AU)        :   23510.21  ± 35206.99 AU
Parallax Delta Significance      :       0.65             sigma
  3D Separation Reliability      :        LOW        Noise       
Proper Motion Angular Difference :       0.11  ±     0.23 degrees
Total Proper Motion Difference   :       2.09  ±     0.11 mas/yr
Tangential Velocity Difference   :       0.44  ±     0.12 km/s
2D Space Velocity Difference     :       0.44  ±     0.08 km/s

Aladin Lite Sky Atlas

DSS color DSS blue 2MASS AllWISE

Star A

Gaia Source ID                   : 1278391075717325312  VizieR

Epoch                            : J 2016.000
Right Ascension (RA)             :     15h 15m 30.27s
Declination (Dec)                :     33° 18' 51.61"
Distance (pc)                    :      36.93  ±   0.17 pc
Distance (ly)                    :     120.47  ±   0.56 ly
Magnitude (Gaia G-band)          :       3.21           mag
Absolute Magnitude               :       0.37  ±   0.01 mag
Spectral Type (color index)      :          K
Luminosity (solar luminosities)  :      52.28  +0.49/−0.48    L☉
  Log(Luminosity)                :    1.71836  ± 0.00403      L/L☉
Teff (bp_rp)                     :    4800.00 K
  Log(Teff)                      :    3.68124
Mass estimation (solar masses)   :       2.86                 M☉
RUWE                             :       2.50
Position Angle of Proper Motion  :     142.90  ±   0.23 degrees
Total Proper Motion              :     139.90  ±   0.11 mas/yr
  Total Proper Motion (Gaia)     :     139.90           mas/yr
Tangential Velocity              :      24.50  ±   0.12 km/s

Star A - Double Star Quality Metrics

Parallax over error :    215.551 : very good
RUWE                :      2.500 : poor astrometric fit, (possible double)
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

Gaia Source ID                   : 1278392381386793856  VizieR

Epoch                            : J 2016.000
Right Ascension (RA)             :     15h 15m 38.45s
Declination (Dec)                :     33° 19' 13.56"
Distance (parsecs)               :      36.82  ±   0.02 pc
Distance (lightyears)            :     120.10  ±   0.08 ly
Magnitude (Gaia G-band)          :       7.68           mag
Absolute Magnitude               :       4.85  ±   0.00 mag
Spectral Type (color index)      :          G
Luminosity (solar luminosities)  :       0.85  +0.00/−0.00    L☉
  Log(Luminosity)                :   -0.07112  ± 0.00057      L/L☉
Teff (teff_gspphot)              :    5771.43  +2.36/-2.30 K
  Log(Teff)                      :    3.76128  ± 0.00018
Mass estimation (solar masses)   :       0.98                 M☉
RUWE                             :       0.98
Position Angle of Proper Motion  :     143.01  ±   0.03 degrees
Total Proper Motion              :     137.81  ±   0.02 mas/yr
  Total Proper Motion (Gaia)     :     137.81           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 - Double Star Quality Metrics

Parallax over error :   1526.622 : very good
RUWE                :      0.980 : good astrometric fit (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 (T_eff) 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

Check: Common Proper Motion (CPM)

rPM (Harshaw)                        :       0.02     (CPM)       mas
CPM 2D Velocity Difference           :       0.44  ±   0.08       km/s
CPM Velocity Evidence Indicator      :       0.99     (Strong)
CPM Distance Evidence Indicator      :       0.98     (Strong)
CPM Total Evidence Indicator         :       0.99     (Strong)
rPM/CPM Agreement                    :       High

Check: Binarity (DS)

DS 2D Velocity Difference            :       0.44  ±   0.08       km/s
DS Velocity Evidence Indicator       :       0.84     (Strong)
DS Distance Evidence Indicator       :       0.81     (Strong)
Binarity Total Evidence Indicator    :       0.83     (Strong)

Projected Separation         :  3862.94 AU
Spatial Separation           : 23510.21 AU
    1-Sigma Range            : [ 3862.94, 58717.21] AU
    Reliability              : LOW  (SNR: 0.65)
    Note                     : 3D distance not significantly resolved
                             : Refer to Projected Separation

Check 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    0.010      78.025    0.007
1901.0    105.031    0.010      78.024    0.007
1902.0    105.030    0.010      78.023    0.007
1903.0    105.029    0.009      78.022    0.007
1904.0    105.028    0.009      78.021    0.007
1905.0    105.027    0.009      78.020    0.007
1906.0    105.025    0.009      78.019    0.007
1907.0    105.024    0.009      78.018    0.007
1908.0    105.023    0.009      78.018    0.007
1909.0    105.022    0.009      78.017    0.007
1910.0    105.021    0.009      78.016    0.007
1911.0    105.020    0.009      78.015    0.007
1912.0    105.019    0.009      78.014    0.006
1913.0    105.018    0.009      78.013    0.006
1914.0    105.017    0.009      78.012    0.006
1915.0    105.016    0.008      78.011    0.006
1916.0    105.015    0.008      78.010    0.006
1917.0    105.014    0.008      78.009    0.006
1918.0    105.013    0.008      78.008    0.006
1919.0    105.011    0.008      78.007    0.006
1920.0    105.010    0.008      78.006    0.006
1921.0    105.009    0.008      78.005    0.006
1922.0    105.008    0.008      78.004    0.006
1923.0    105.007    0.008      78.003    0.006
1924.0    105.006    0.008      78.002    0.006
1925.0    105.005    0.008      78.001    0.006
1926.0    105.004    0.008      78.000    0.006
1927.0    105.003    0.007      77.999    0.006
1928.0    105.002    0.007      77.998    0.005
1929.0    105.001    0.007      77.997    0.005
1930.0    105.000    0.007      77.996    0.005
1931.0    104.999    0.007      77.995    0.005
1932.0    104.997    0.007      77.994    0.005
1933.0    104.996    0.007      77.993    0.005
1934.0    104.995    0.007      77.992    0.005
1935.0    104.994    0.007      77.991    0.005
1936.0    104.993    0.007      77.990    0.005
1937.0    104.992    0.007      77.989    0.005
1938.0    104.991    0.007      77.988    0.005
1939.0    104.990    0.006      77.987    0.005
1940.0    104.989    0.006      77.986    0.005
1941.0    104.988    0.006      77.985    0.005
1942.0    104.987    0.006      77.985    0.005
1943.0    104.986    0.006      77.984    0.005
1944.0    104.985    0.006      77.983    0.004
1945.0    104.983    0.006      77.982    0.004
1946.0    104.982    0.006      77.981    0.004
1947.0    104.981    0.006      77.980    0.004
1948.0    104.980    0.006      77.979    0.004
1949.0    104.979    0.006      77.978    0.004
1950.0    104.978    0.006      77.977    0.004
1951.0    104.977    0.005      77.976    0.004
1952.0    104.976    0.005      77.975    0.004
1953.0    104.975    0.005      77.974    0.004
1954.0    104.974    0.005      77.973    0.004
1955.0    104.973    0.005      77.972    0.004
1956.0    104.972    0.005      77.971    0.004
1957.0    104.971    0.005      77.970    0.004
1958.0    104.969    0.005      77.969    0.004
1959.0    104.968    0.005      77.968    0.004
1960.0    104.967    0.005      77.967    0.003
1961.0    104.966    0.005      77.966    0.003
1962.0    104.965    0.005      77.965    0.003
1963.0    104.964    0.004      77.964    0.003
1964.0    104.963    0.004      77.963    0.003
1965.0    104.962    0.004      77.962    0.003
1966.0    104.961    0.004      77.961    0.003
1967.0    104.960    0.004      77.960    0.003
1968.0    104.959    0.004      77.959    0.003
1969.0    104.958    0.004      77.958    0.003
1970.0    104.957    0.004      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    0.003      77.952    0.003
1976.0    104.950    0.003      77.952    0.002
1977.0    104.949    0.003      77.951    0.002
1978.0    104.948    0.003      77.950    0.002
1979.0    104.947    0.003      77.949    0.002
1980.0    104.946    0.003      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    0.002      77.941    0.002
1988.0    104.937    0.002      77.940    0.002
1989.0    104.936    0.002      77.939    0.002
1990.0    104.935    0.002      77.938    0.002
1991.0    104.934    0.002      77.937    0.002
1992.0    104.933    0.002      77.936    0.001
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    0.001      77.929    0.001
2000.0    104.924    0.001      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    0.000      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    0.000      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    0.001      77.897    0.001
2033.0    104.889    0.001      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    0.001
2041.0    104.880    0.002      77.888    0.002
2042.0    104.879    0.002      77.887    0.002
2043.0    104.878    0.002      77.886    0.002
2044.0    104.877    0.002      77.885    0.002
2045.0    104.876    0.002      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    0.003      77.878    0.002
2053.0    104.867    0.003      77.877    0.002
2054.0    104.866    0.003      77.876    0.002
2055.0    104.865    0.003      77.875    0.002
2056.0    104.864    0.003      77.874    0.002
2057.0    104.863    0.003      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    0.004      77.868    0.003
2063.0    104.857    0.004      77.867    0.003
2064.0    104.856    0.004      77.866    0.003
2065.0    104.855    0.004      77.865    0.003
2066.0    104.853    0.004      77.864    0.003
2067.0    104.852    0.004      77.863    0.003
2068.0    104.851    0.004      77.862    0.003
2069.0    104.850    0.004      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    0.005      77.858    0.003
2073.0    104.846    0.005      77.857    0.004
2074.0    104.845    0.005      77.856    0.004
2075.0    104.844    0.005      77.855    0.004
2076.0    104.843    0.005      77.854    0.004
2077.0    104.842    0.005      77.853    0.004
2078.0    104.841    0.005      77.852    0.004
2079.0    104.840    0.005      77.851    0.004
2080.0    104.838    0.005      77.850    0.004
2081.0    104.837    0.005      77.849    0.004
2082.0    104.836    0.006      77.848    0.004
2083.0    104.835    0.006      77.848    0.004
2084.0    104.834    0.006      77.847    0.004
2085.0    104.833    0.006      77.846    0.004
2086.0    104.832    0.006      77.845    0.004
2087.0    104.831    0.006      77.844    0.004
2088.0    104.830    0.006      77.843    0.004
2089.0    104.829    0.006      77.842    0.005
2090.0    104.828    0.006      77.841    0.005
2091.0    104.827    0.006      77.840    0.005
2092.0    104.826    0.006      77.839    0.005
2093.0    104.825    0.006      77.838    0.005
2094.0    104.823    0.007      77.837    0.005
2095.0    104.822    0.007      77.836    0.005
2096.0    104.821    0.007      77.835    0.005
2097.0    104.820    0.007      77.834    0.005
2098.0    104.819    0.007      77.833    0.005
2099.0    104.818    0.007      77.832    0.005
2100.0    104.817    0.007      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"  N/A      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	Longitude of periastron (degrees)
Start-Year:	-35975.0	Year
End-Year:	40025.0	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
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Kis2009	Reference

Range error in Orbital Elements >>- Epoch T is outside the typical historical/near-future range (1600-2500)<<

Parsed GAIA Input Data

Click to expand/collapse the Gaia Input Data:

Star A

solution_id = 1636148068921376768
designation = Gaia DR3 1278391075717325312
source_id = 1278391075717325312
random_index = 364100855.0
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 = false
has_xp_sampled = false
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = false
has_mcmc_msc = false
in_andromeda_survey = false
classprob_dsc_combmod_quasar = 1.3040742e-09
classprob_dsc_combmod_galaxy = 6.342658e-09
classprob_dsc_combmod_star = 0.99989676

Star B

solution_id = 1636148068921376768
designation = Gaia DR3 1278392381386793856
source_id = 1278392381386793856
random_index = 1369485254.0
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 = false
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 = false
has_xp_sampled = false
has_rvs = false
has_epoch_photometry = false
has_epoch_rv = false
has_mcmc_gspphot = false
has_mcmc_msc = false
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

Observation Date:

Disclaimer

This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.

Acknowledgements

The Double Star Calculator makes use of data from the European Space Agency (ESA) mission Gaia, processed by the Gaia Data Processing and Analysis Consortium (DPAC). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Additionally, it incorporates data from the Washington Double Star Catalog, maintained at the U.S. Naval Observatory, and makes use of the Aladin Sky Atlas developed at CDS, Strasbourg Observatory, France.

Report Information

Double Star Calculator:		Version 1.0 ($Rev: 1902 $)
Report created:		2026-02-06 20:40:52 +0100