Gaia Source ID - Star A : 2175448631041916928 Simbad
Gaia Source ID - Star B : 2175447222292641536 Simbad
Observation Epoch : J 2025.715 / 2025-09-19
Angular Separation : 47.733" ± 0.4330 mas
Position Angle : 299.30 ± 0.00030 degreesStar A/B Epoch : J 2016.000 / J 2016.000
Angular Separation : 47.760" ± 0.0339 mas
Position Angle : 299.37 ± 0.00003 degrees
LB of Projected Separation (AU): 8378.13 AU
Spatial Separation (pc) : 337.32 ± 13.75 pc
Spatial Separation (ly) : 1100.18 ± 44.85 ly
Proper Motion Angular Difference : 40.67 ± 4.35 degrees
Total Proper Motion Difference : 2.13 ± 0.06 mas/yr
Tangential Velocity Difference : 18.37 ± 0.69 km/s
Aladin Lite Sky Atlas
DSS color
DSS blue
2MASS
AllWISE
Gaia Source ID : 2175448631041916928 Simbad
Parallax over error : 443.470 : very good
RUWE : 0.860 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 6.540 : G > 3 mag, photometry reliable
Excess noise : 0.097 : poor fit, model deviation significant
Significance : 11.819 : possible double star, motion, mismatch
BP-RP excess factor : 1.237 : photometry consistent
Visibility periods : 26 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.007 : unobtrusive (single star source)
Gaia Source ID : 2175447222292641536 Simbad 3.23
Parallax over error : 37.301 : very good
RUWE : 3.230 : poor astrometric fit, (possible double)
Duplicated source : false : single source
G magnitude : 9.187 : G > 3 mag, photometry reliable
Excess noise : 0.569 : poor fit, model deviation significant
Significance : 388.294 : possible double star, motion, mismatch
BP-RP excess factor : 1.166 : photometry consistent
Visibility periods : 25 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.038 : unobtrusive (single star source)
Spatial separation :
337.32 pc, with an uncertainty range of [ 323.57, 351.07] pc
Probability for a physical pair:
Close to or zero (Nominal) / Close to or zero (at lower bound of uncertainty)
Separation-Based Evidence factor:
0.026 (Nominal) / Flag: normal
Relative Proper Motion Angular difference:
22.59 %
Relative Total Proper Motion difference:
25.86 %
Relative Tangential Velocity difference:
267.88 %
Estimated CPM Probability:
18.55 %
CPM-Based Evidence factor:
0.034
Combined Physical Binding Evidence factor:
0.026
RUWE probability for a binary system (Star A):
Zero
RUWE probability for a binary system (Star B):
High
-- 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 48.084 0.005 300.224 0.004
1901.0 48.081 0.005 300.216 0.004
1902.0 48.079 0.005 300.209 0.004
1903.0 48.076 0.005 300.202 0.004
1904.0 48.073 0.005 300.194 0.004
1905.0 48.070 0.005 300.187 0.004
1906.0 48.067 0.005 300.180 0.004
1907.0 48.064 0.005 300.172 0.004
1908.0 48.062 0.005 300.165 0.004
1909.0 48.059 0.005 300.158 0.004
1910.0 48.056 0.005 300.150 0.004
1911.0 48.053 0.005 300.143 0.004
1912.0 48.050 0.005 300.136 0.004
1913.0 48.047 0.005 300.128 0.004
1914.0 48.045 0.005 300.121 0.004
1915.0 48.042 0.005 300.114 0.004
1916.0 48.039 0.004 300.106 0.003
1917.0 48.036 0.004 300.099 0.003
1918.0 48.033 0.004 300.092 0.003
1919.0 48.030 0.004 300.084 0.003
1920.0 48.028 0.004 300.077 0.003
1921.0 48.025 0.004 300.070 0.003
1922.0 48.022 0.004 300.062 0.003
1923.0 48.019 0.004 300.055 0.003
1924.0 48.016 0.004 300.048 0.003
1925.0 48.013 0.004 300.040 0.003
1926.0 48.011 0.004 300.033 0.003
1927.0 48.008 0.004 300.026 0.003
1928.0 48.005 0.004 300.018 0.003
1929.0 48.002 0.004 300.011 0.003
1930.0 47.999 0.004 300.004 0.003
1931.0 47.997 0.004 299.996 0.003
1932.0 47.994 0.004 299.989 0.003
1933.0 47.991 0.004 299.982 0.003
1934.0 47.988 0.004 299.974 0.003
1935.0 47.985 0.004 299.967 0.003
1936.0 47.982 0.004 299.960 0.003
1937.0 47.980 0.004 299.952 0.003
1938.0 47.977 0.003 299.945 0.003
1939.0 47.974 0.003 299.937 0.003
1940.0 47.971 0.003 299.930 0.003
1941.0 47.968 0.003 299.923 0.003
1942.0 47.966 0.003 299.915 0.003
1943.0 47.963 0.003 299.908 0.003
1944.0 47.960 0.003 299.901 0.003
1945.0 47.957 0.003 299.893 0.002
1946.0 47.954 0.003 299.886 0.002
1947.0 47.952 0.003 299.879 0.002
1948.0 47.949 0.003 299.871 0.002
1949.0 47.946 0.003 299.864 0.002
1950.0 47.943 0.003 299.856 0.002
1951.0 47.940 0.003 299.849 0.002
1952.0 47.938 0.003 299.842 0.002
1953.0 47.935 0.003 299.834 0.002
1954.0 47.932 0.003 299.827 0.002
1955.0 47.929 0.003 299.820 0.002
1956.0 47.926 0.003 299.812 0.002
1957.0 47.924 0.003 299.805 0.002
1958.0 47.921 0.003 299.797 0.002
1959.0 47.918 0.003 299.790 0.002
1960.0 47.915 0.002 299.783 0.002
1961.0 47.912 0.002 299.775 0.002
1962.0 47.910 0.002 299.768 0.002
1963.0 47.907 0.002 299.761 0.002
1964.0 47.904 0.002 299.753 0.002
1965.0 47.901 0.002 299.746 0.002
1966.0 47.898 0.002 299.738 0.002
1967.0 47.896 0.002 299.731 0.002
1968.0 47.893 0.002 299.724 0.002
1969.0 47.890 0.002 299.716 0.002
1970.0 47.887 0.002 299.709 0.002
1971.0 47.885 0.002 299.702 0.002
1972.0 47.882 0.002 299.694 0.002
1973.0 47.879 0.002 299.687 0.001
1974.0 47.876 0.002 299.679 0.001
1975.0 47.873 0.002 299.672 0.001
1976.0 47.871 0.002 299.665 0.001
1977.0 47.868 0.002 299.657 0.001
1978.0 47.865 0.002 299.650 0.001
1979.0 47.862 0.002 299.642 0.001
1980.0 47.859 0.002 299.635 0.001
1981.0 47.857 0.002 299.628 0.001
1982.0 47.854 0.002 299.620 0.001
1983.0 47.851 0.001 299.613 0.001
1984.0 47.848 0.001 299.605 0.001
1985.0 47.846 0.001 299.598 0.001
1986.0 47.843 0.001 299.591 0.001
1987.0 47.840 0.001 299.583 0.001
1988.0 47.837 0.001 299.576 0.001
1989.0 47.835 0.001 299.568 0.001
1990.0 47.832 0.001 299.561 0.001
1991.0 47.829 0.001 299.554 0.001
1992.0 47.826 0.001 299.546 0.001
1993.0 47.823 0.001 299.539 0.001
1994.0 47.821 0.001 299.531 0.001
1995.0 47.818 0.001 299.524 0.001
1996.0 47.815 0.001 299.517 0.001
1997.0 47.812 0.001 299.509 0.001
1998.0 47.810 0.001 299.502 0.001
1999.0 47.807 0.001 299.494 0.001
2000.0 47.804 0.001 299.487 0.001
2001.0 47.801 0.001 299.480 0.001
2002.0 47.799 0.001 299.472 0.000
2003.0 47.796 0.001 299.465 0.000
2004.0 47.793 0.001 299.457 0.000
2005.0 47.790 0.000 299.450 0.000
2006.0 47.788 0.000 299.442 0.000
2007.0 47.785 0.000 299.435 0.000
2008.0 47.782 0.000 299.428 0.000
2009.0 47.779 0.000 299.420 0.000
2010.0 47.777 0.000 299.413 0.000
2011.0 47.774 0.000 299.405 0.000
2012.0 47.771 0.000 299.398 0.000
2013.0 47.768 0.000 299.391 0.000
2014.0 47.765 0.000 299.383 0.000
2015.0 47.763 0.000 299.376 0.000
2016.0 47.760 0.000 299.368 0.000
2017.0 47.757 0.000 299.361 0.000
2018.0 47.754 0.000 299.353 0.000
2019.0 47.752 0.000 299.346 0.000
2020.0 47.749 0.000 299.339 0.000
2021.0 47.746 0.000 299.331 0.000
2022.0 47.744 0.000 299.324 0.000
2023.0 47.741 0.000 299.316 0.000
2024.0 47.738 0.000 299.309 0.000
2025.0 47.735 0.000 299.301 0.000
2026.0 47.733 0.000 299.294 0.000
2027.0 47.730 0.000 299.287 0.000
2028.0 47.727 0.001 299.279 0.000
2029.0 47.724 0.001 299.272 0.000
2030.0 47.722 0.001 299.264 0.000
2031.0 47.719 0.001 299.257 0.001
2032.0 47.716 0.001 299.249 0.001
2033.0 47.713 0.001 299.242 0.001
2034.0 47.711 0.001 299.234 0.001
2035.0 47.708 0.001 299.227 0.001
2036.0 47.705 0.001 299.220 0.001
2037.0 47.702 0.001 299.212 0.001
2038.0 47.700 0.001 299.205 0.001
2039.0 47.697 0.001 299.197 0.001
2040.0 47.694 0.001 299.190 0.001
2041.0 47.692 0.001 299.182 0.001
2042.0 47.689 0.001 299.175 0.001
2043.0 47.686 0.001 299.167 0.001
2044.0 47.683 0.001 299.160 0.001
2045.0 47.681 0.001 299.153 0.001
2046.0 47.678 0.001 299.145 0.001
2047.0 47.675 0.001 299.138 0.001
2048.0 47.672 0.001 299.130 0.001
2049.0 47.670 0.001 299.123 0.001
2050.0 47.667 0.002 299.115 0.001
2051.0 47.664 0.002 299.108 0.001
2052.0 47.662 0.002 299.100 0.001
2053.0 47.659 0.002 299.093 0.001
2054.0 47.656 0.002 299.086 0.001
2055.0 47.653 0.002 299.078 0.001
2056.0 47.651 0.002 299.071 0.001
2057.0 47.648 0.002 299.063 0.001
2058.0 47.645 0.002 299.056 0.001
2059.0 47.643 0.002 299.048 0.001
2060.0 47.640 0.002 299.041 0.002
2061.0 47.637 0.002 299.033 0.002
2062.0 47.634 0.002 299.026 0.002
2063.0 47.632 0.002 299.018 0.002
2064.0 47.629 0.002 299.011 0.002
2065.0 47.626 0.002 299.003 0.002
2066.0 47.624 0.002 298.996 0.002
2067.0 47.621 0.002 298.988 0.002
2068.0 47.618 0.002 298.981 0.002
2069.0 47.615 0.002 298.974 0.002
2070.0 47.613 0.002 298.966 0.002
2071.0 47.610 0.002 298.959 0.002
2072.0 47.607 0.002 298.951 0.002
2073.0 47.605 0.003 298.944 0.002
2074.0 47.602 0.003 298.936 0.002
2075.0 47.599 0.003 298.929 0.002
2076.0 47.597 0.003 298.921 0.002
2077.0 47.594 0.003 298.914 0.002
2078.0 47.591 0.003 298.906 0.002
2079.0 47.588 0.003 298.899 0.002
2080.0 47.586 0.003 298.891 0.002
2081.0 47.583 0.003 298.884 0.002
2082.0 47.580 0.003 298.876 0.002
2083.0 47.578 0.003 298.869 0.002
2084.0 47.575 0.003 298.861 0.002
2085.0 47.572 0.003 298.854 0.002
2086.0 47.570 0.003 298.846 0.002
2087.0 47.567 0.003 298.839 0.002
2088.0 47.564 0.003 298.831 0.003
2089.0 47.561 0.003 298.824 0.003
2090.0 47.559 0.003 298.816 0.003
2091.0 47.556 0.003 298.809 0.003
2092.0 47.553 0.003 298.802 0.003
2093.0 47.551 0.003 298.794 0.003
2094.0 47.548 0.003 298.787 0.003
2095.0 47.545 0.003 298.779 0.003
2096.0 47.543 0.004 298.772 0.003
2097.0 47.540 0.004 298.764 0.003
2098.0 47.537 0.004 298.757 0.003
2099.0 47.535 0.004 298.749 0.003
2100.0 47.532 0.004 298.742 0.003
WDS ID Discovr Comp # Sep PA Epoch Obs Telescope Camera Note
--------------------------------------------------------------------------------------------------
21197+5303 S 786 1 47.9" 299.5° B2025.720 HWI 120/900 APO ASI678MM
-- Image of S-786-taken with Equinox 120/900 APO --
wds_id : 21197+5303
discoverer_code : S
discoverer_number : 786
discoverer_components :
date_first : 1824
date_last : 2019
num_of_obs : 33
pa_first : 301
pa_last : 298
sep_first : 48.5
sep_last : 47.9
mag_primary : 6.94
mag_secondary : 9.16
spectral_type : K2
primary_proper_motion_RA : 9
primary_proper_motion_DEC : -1
secondary_proper_motion_RA : 7
secondary_proper_motion_DEC : -8
dm_number : +52 2913
notes : N
precise_coordinate : 211940.77+530329.2
WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
Click to expand/collapse the Gaia Input Data:
Star A
solution_id = 1636148068921376768
designation = Gaia DR3 2175448631041916928
source_id = 2175448631041916928
random_index = 551745014.0
ref_epoch = 2016.0
ra = 319.91993568251274
ra_error = 0.011097711
dec = 53.058105468893146
dec_error = 0.011182829
parallax = 5.700557725857481
parallax_error = 0.012854448
parallax_over_error = 443.4697
pm = 8.244429
pmra = 8.238071253077958
pmra_error = 0.014264314
pmdec = -0.3237165219299198
pmdec_error = 0.013789861
ra_dec_corr = -0.07663678
ra_parallax_corr = -0.009351732
ra_pmra_corr = -0.0010056347
ra_pmdec_corr = -0.1176141
dec_parallax_corr = 0.1352692
dec_pmra_corr = -0.14387418
dec_pmdec_corr = -0.0972746
parallax_pmra_corr = -0.15543155
parallax_pmdec_corr = -0.11968287
pmra_pmdec_corr = -0.024828712
astrometric_n_obs_al = 347
astrometric_n_obs_ac = 347
astrometric_n_good_obs_al = 347
astrometric_n_bad_obs_al = 0
astrometric_gof_al = -3.701438
astrometric_chi2_al = 745.07404
astrometric_excess_noise = 0.09684909
astrometric_excess_noise_sig = 11.818641
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.4753212
astrometric_matched_transits = 40
visibility_periods_used = 26
astrometric_sigma5d_max = 0.019898333
matched_transits = 56
new_matched_transits = 15
matched_transits_removed = 8
ipd_gof_harmonic_amplitude = 0.0066655143
ipd_gof_harmonic_phase = 14.362258
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.8609374
duplicated_source = false
phot_g_n_obs = 452
phot_g_mean_flux = 45601506.158405334
phot_g_mean_flux_error = 5324.2397
phot_g_mean_flux_over_error = 8564.886
phot_g_mean_mag = 6.539919
phot_bp_n_obs = 48
phot_bp_mean_flux = 20475445.24368429
phot_bp_mean_flux_error = 9404.404
phot_bp_mean_flux_over_error = 2177.2188
phot_bp_mean_mag = 7.0604587
phot_rp_n_obs = 45
phot_rp_mean_flux = 35919154.88212467
phot_rp_mean_flux_error = 16481.162
phot_rp_mean_flux_over_error = 2179.4067
phot_rp_mean_mag = 5.85958
phot_bp_rp_excess_factor = 1.2366829
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 21
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 19
phot_proc_mode = 0
bp_rp = 1.2008786
bp_g = 0.52053976
g_rp = 0.68033886
radial_velocity = 10.997564
radial_velocity_error = 0.12608396
rv_method_used = 1
rv_nb_transits = 25
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 15
rv_expected_sig_to_noise = 784.7834
rv_renormalised_gof = 1.4755046
rv_chisq_pvalue = 0.5280994
rv_time_duration = 1010.33716
rv_amplitude_robust = 0.59724903
rv_template_teff = 4750.0
rv_template_logg = 2.5
rv_template_fe_h = -0.25
rv_atm_param_origin = 222
vbroad = 8.935657
vbroad_error = 0.6074703
vbroad_nb_transits = 17
grvs_mag = 5.605428
grvs_mag_error = 0.00492583
grvs_mag_nb_transits = 25
rvs_spec_sig_to_noise = 826.51636
phot_variable_flag = NOT_AVAILABLE
l = 94.24473922193965
b = 2.412251176682316
ecl_lon = 355.38644792961253
ecl_lat = 62.525678447783136
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 = 1.0263468e-13
classprob_dsc_combmod_galaxy = 5.126551e-13
classprob_dsc_combmod_star = 0.9999394
Star B
solution_id = 1636148068921376768
designation = Gaia DR3 2175447222292641536
source_id = 2175447222292641536
random_index = 495997693.0
ref_epoch = 2016.0
ra = 319.90069548167844
ra_error = 0.04535137
dec = 53.0646101713507
dec_error = 0.04654183
parallax = 1.95030936123675
parallax_error = 0.05228565
parallax_over_error = 37.301044
pm = 10.376606
pmra = 7.599139255086301
pmra_error = 0.06026339
pmdec = -7.0659062377073205
pmdec_error = 0.06048153
ra_dec_corr = -0.07627729
ra_parallax_corr = -0.12001534
ra_pmra_corr = 0.015110033
ra_pmdec_corr = -0.07455525
dec_parallax_corr = 0.027744237
dec_pmra_corr = -0.09668703
dec_pmdec_corr = -0.20134205
parallax_pmra_corr = -0.051693227
parallax_pmdec_corr = 0.0045248684
pmra_pmdec_corr = 0.014466335
astrometric_n_obs_al = 336
astrometric_n_obs_ac = 336
astrometric_n_good_obs_al = 335
astrometric_n_bad_obs_al = 1
astrometric_gof_al = 45.759056
astrometric_chi2_al = 10065.464
astrometric_excess_noise = 0.5691164
astrometric_excess_noise_sig = 388.29434
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.6753061
astrometric_matched_transits = 38
visibility_periods_used = 25
astrometric_sigma5d_max = 0.08495171
matched_transits = 56
new_matched_transits = 16
matched_transits_removed = 4
ipd_gof_harmonic_amplitude = 0.03844763
ipd_gof_harmonic_phase = 178.91399
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 3.2337422
duplicated_source = false
phot_g_n_obs = 354
phot_g_mean_flux = 3983139.0207049125
phot_g_mean_flux_error = 2088.3398
phot_g_mean_flux_over_error = 1907.3232
phot_g_mean_mag = 9.186803
phot_bp_n_obs = 38
phot_bp_mean_flux = 2633921.3859595293
phot_bp_mean_flux_error = 7260.812
phot_bp_mean_flux_over_error = 362.7585
phot_bp_mean_mag = 9.287035
phot_rp_n_obs = 36
phot_rp_mean_flux = 2008474.075251834
phot_rp_mean_flux_error = 2738.853
phot_rp_mean_flux_over_error = 733.3267
phot_rp_mean_mag = 8.99073
phot_bp_rp_excess_factor = 1.1655117
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 = 0.2963047
bp_g = 0.100232124
g_rp = 0.19607258
phot_variable_flag = VARIABLE
l = 94.24122902236027
b = 2.425045896325086
ecl_lon = 355.37691400865197
ecl_lat = 62.538195071626
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 4
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 = 1.1051406e-13
classprob_dsc_combmod_galaxy = 5.520122e-13
classprob_dsc_combmod_star = 0.99915946
teff_gspphot = 7979.245
teff_gspphot_lower = 7952.1978
teff_gspphot_upper = 8032.61
logg_gspphot = 3.7036
logg_gspphot_lower = 3.6884
logg_gspphot_upper = 3.7341
mh_gspphot = -0.5194
mh_gspphot_lower = -0.5532
mh_gspphot_upper = -0.4907
distance_gspphot = 441.591
distance_gspphot_lower = 423.3161
distance_gspphot_upper = 451.8674
azero_gspphot = 0.1898
azero_gspphot_lower = 0.1807
azero_gspphot_upper = 0.2077
ag_gspphot = 0.1756
ag_gspphot_lower = 0.1671
ag_gspphot_upper = 0.1923
ebpminrp_gspphot = 0.0938
ebpminrp_gspphot_lower = 0.0892
ebpminrp_gspphot_upper = 0.1027
libname_gspphot = A
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 .
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.
Double Star Calculator:
Version 1.0 ($Rev: 1734 $)
Report created:
2025-12-29 22:26:28 +0100
www.stella-vega.de
