Gaia Source ID - Star A : 3947649169267207296 Simbad
Gaia Source ID - Star B : 3947647760517933824 Simbad
Observation Epoch : J 2023.300 / 2023-04-21
Angular Separation : 20.123" ± 1.0141 mas
Position Angle : 270.21 ± 0.00260 degreesStar A/B Epoch : J 2016.000 / J 2016.000
Angular Separation : 20.131" ± 0.0916 mas
Position Angle : 270.25 ± 0.00028 degrees
LB of Projected Separation (AU): 2249.80 AU
Spatial Separation (ly) : 1.18 ± 5.36 ly
Spatial Separation (AU) : 74778.31 ± 338714.27 AU
Proper Motion Angular Difference : 2.21 ± 0.31 degrees
Total Proper Motion Difference : 2.17 ± 0.12 mas/yr
Tangential Velocity Difference : 1.19 ± 0.19 km/s
Aladin Lite Sky Atlas
DSS color
DSS blue
2MASS
AllWISE
Gaia Source ID : 3947649169267207296 Simbad
Parallax over error : 70.156 : very good
RUWE : 0.860 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 4.690 : G > 3 mag, photometry reliable
Excess noise : 0.646 : poor fit, model deviation significant
Significance : 390.549 : possible double star, motion, mismatch
BP-RP excess factor : 1.237 : photometry consistent
Visibility periods : 13 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.030 : unobtrusive (single star source)
Gaia Source ID : 3947647760517933824 Simbad
Parallax over error : 293.640 : very good
RUWE : 0.960 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 6.519 : G > 3 mag, photometry reliable
Excess noise : 0.177 : poor fit, model deviation significant
Significance : 30.657 : possible double star, motion, mismatch
BP-RP excess factor : 1.169 : photometry consistent
Visibility periods : 15 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.011 : unobtrusive (single star source)
Spatial separation :
74778.3 AU, with an uncertainty range of [ 2249.8 (P), 413492.6] AU
Probability for a physical pair:
Close to or zero (Nominal) / High (at lower bound of uncertainty)
Separation-Based Evidence factor:
0.42 (Nominal) / Flag: normal
Relative Proper Motion Angular difference:
1.23 %
Relative Total Proper Motion difference:
10.20 %
Relative Tangential Velocity difference:
10.56 %
Estimated CPM Probability:
87.67 %
CPM-Based Evidence factor:
0.769
Combined Physical Binding Evidence factor:
0.585
RUWE probability for a binary system (Star A):
Zero
RUWE probability for a binary system (Star B):
Zero
-- 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 20.260 0.016 270.928 0.041
1901.0 20.259 0.016 270.923 0.040
1902.0 20.258 0.016 270.917 0.040
1903.0 20.257 0.016 270.911 0.040
1904.0 20.256 0.015 270.905 0.039
1905.0 20.255 0.015 270.900 0.039
1906.0 20.254 0.015 270.894 0.038
1907.0 20.252 0.015 270.888 0.038
1908.0 20.251 0.015 270.882 0.038
1909.0 20.250 0.015 270.876 0.037
1910.0 20.249 0.015 270.871 0.037
1911.0 20.248 0.015 270.865 0.037
1912.0 20.247 0.014 270.859 0.036
1913.0 20.246 0.014 270.853 0.036
1914.0 20.245 0.014 270.847 0.036
1915.0 20.243 0.014 270.842 0.035
1916.0 20.242 0.014 270.836 0.035
1917.0 20.241 0.014 270.830 0.035
1918.0 20.240 0.014 270.824 0.034
1919.0 20.239 0.013 270.818 0.034
1920.0 20.238 0.013 270.813 0.034
1921.0 20.237 0.013 270.807 0.033
1922.0 20.235 0.013 270.801 0.033
1923.0 20.234 0.013 270.795 0.033
1924.0 20.233 0.013 270.789 0.032
1925.0 20.232 0.013 270.784 0.032
1926.0 20.231 0.012 270.778 0.032
1927.0 20.230 0.012 270.772 0.031
1928.0 20.229 0.012 270.766 0.031
1929.0 20.228 0.012 270.760 0.030
1930.0 20.226 0.012 270.755 0.030
1931.0 20.225 0.012 270.749 0.030
1932.0 20.224 0.012 270.743 0.029
1933.0 20.223 0.011 270.737 0.029
1934.0 20.222 0.011 270.731 0.029
1935.0 20.221 0.011 270.726 0.028
1936.0 20.220 0.011 270.720 0.028
1937.0 20.219 0.011 270.714 0.028
1938.0 20.218 0.011 270.708 0.027
1939.0 20.216 0.011 270.702 0.027
1940.0 20.215 0.011 270.696 0.027
1941.0 20.214 0.010 270.691 0.026
1942.0 20.213 0.010 270.685 0.026
1943.0 20.212 0.010 270.679 0.026
1944.0 20.211 0.010 270.673 0.025
1945.0 20.210 0.010 270.667 0.025
1946.0 20.209 0.010 270.662 0.025
1947.0 20.207 0.010 270.656 0.024
1948.0 20.206 0.009 270.650 0.024
1949.0 20.205 0.009 270.644 0.023
1950.0 20.204 0.009 270.638 0.023
1951.0 20.203 0.009 270.632 0.023
1952.0 20.202 0.009 270.627 0.022
1953.0 20.201 0.009 270.621 0.022
1954.0 20.200 0.009 270.615 0.022
1955.0 20.198 0.008 270.609 0.021
1956.0 20.197 0.008 270.603 0.021
1957.0 20.196 0.008 270.598 0.021
1958.0 20.195 0.008 270.592 0.020
1959.0 20.194 0.008 270.586 0.020
1960.0 20.193 0.008 270.580 0.020
1961.0 20.192 0.008 270.574 0.019
1962.0 20.191 0.007 270.568 0.019
1963.0 20.190 0.007 270.563 0.019
1964.0 20.188 0.007 270.557 0.018
1965.0 20.187 0.007 270.551 0.018
1966.0 20.186 0.007 270.545 0.018
1967.0 20.185 0.007 270.539 0.017
1968.0 20.184 0.007 270.533 0.017
1969.0 20.183 0.007 270.528 0.016
1970.0 20.182 0.006 270.522 0.016
1971.0 20.181 0.006 270.516 0.016
1972.0 20.179 0.006 270.510 0.015
1973.0 20.178 0.006 270.504 0.015
1974.0 20.177 0.006 270.498 0.015
1975.0 20.176 0.006 270.493 0.014
1976.0 20.175 0.006 270.487 0.014
1977.0 20.174 0.005 270.481 0.014
1978.0 20.173 0.005 270.475 0.013
1979.0 20.172 0.005 270.469 0.013
1980.0 20.171 0.005 270.463 0.013
1981.0 20.169 0.005 270.458 0.012
1982.0 20.168 0.005 270.452 0.012
1983.0 20.167 0.005 270.446 0.012
1984.0 20.166 0.004 270.440 0.011
1985.0 20.165 0.004 270.434 0.011
1986.0 20.164 0.004 270.428 0.011
1987.0 20.163 0.004 270.422 0.010
1988.0 20.162 0.004 270.417 0.010
1989.0 20.161 0.004 270.411 0.009
1990.0 20.159 0.004 270.405 0.009
1991.0 20.158 0.003 270.399 0.009
1992.0 20.157 0.003 270.393 0.008
1993.0 20.156 0.003 270.387 0.008
1994.0 20.155 0.003 270.382 0.008
1995.0 20.154 0.003 270.376 0.007
1996.0 20.153 0.003 270.370 0.007
1997.0 20.152 0.003 270.364 0.007
1998.0 20.151 0.002 270.358 0.006
1999.0 20.149 0.002 270.352 0.006
2000.0 20.148 0.002 270.346 0.006
2001.0 20.147 0.002 270.341 0.005
2002.0 20.146 0.002 270.335 0.005
2003.0 20.145 0.002 270.329 0.005
2004.0 20.144 0.002 270.323 0.004
2005.0 20.143 0.002 270.317 0.004
2006.0 20.142 0.001 270.311 0.004
2007.0 20.141 0.001 270.305 0.003
2008.0 20.139 0.001 270.300 0.003
2009.0 20.138 0.001 270.294 0.002
2010.0 20.137 0.001 270.288 0.002
2011.0 20.136 0.001 270.282 0.002
2012.0 20.135 0.001 270.276 0.001
2013.0 20.134 0.000 270.270 0.001
2014.0 20.133 0.000 270.264 0.001
2015.0 20.132 0.000 270.259 0.000
2016.0 20.131 0.000 270.253 0.000
2017.0 20.130 0.000 270.247 0.000
2018.0 20.128 0.000 270.241 0.001
2019.0 20.127 0.000 270.235 0.001
2020.0 20.126 0.001 270.229 0.001
2021.0 20.125 0.001 270.223 0.002
2022.0 20.124 0.001 270.218 0.002
2023.0 20.123 0.001 270.212 0.002
2024.0 20.122 0.001 270.206 0.003
2025.0 20.121 0.001 270.200 0.003
2026.0 20.120 0.001 270.194 0.004
2027.0 20.118 0.002 270.188 0.004
2028.0 20.117 0.002 270.182 0.004
2029.0 20.116 0.002 270.176 0.005
2030.0 20.115 0.002 270.171 0.005
2031.0 20.114 0.002 270.165 0.005
2032.0 20.113 0.002 270.159 0.006
2033.0 20.112 0.002 270.153 0.006
2034.0 20.111 0.002 270.147 0.006
2035.0 20.110 0.003 270.141 0.007
2036.0 20.109 0.003 270.135 0.007
2037.0 20.107 0.003 270.129 0.007
2038.0 20.106 0.003 270.124 0.008
2039.0 20.105 0.003 270.118 0.008
2040.0 20.104 0.003 270.112 0.008
2041.0 20.103 0.003 270.106 0.009
2042.0 20.102 0.004 270.100 0.009
2043.0 20.101 0.004 270.094 0.010
2044.0 20.100 0.004 270.088 0.010
2045.0 20.099 0.004 270.082 0.010
2046.0 20.098 0.004 270.077 0.011
2047.0 20.096 0.004 270.071 0.011
2048.0 20.095 0.004 270.065 0.011
2049.0 20.094 0.005 270.059 0.012
2050.0 20.093 0.005 270.053 0.012
2051.0 20.092 0.005 270.047 0.012
2052.0 20.091 0.005 270.041 0.013
2053.0 20.090 0.005 270.035 0.013
2054.0 20.089 0.005 270.029 0.013
2055.0 20.088 0.005 270.024 0.014
2056.0 20.087 0.006 270.018 0.014
2057.0 20.085 0.006 270.012 0.014
2058.0 20.084 0.006 270.006 0.015
2059.0 20.083 0.006 270.000 0.015
2060.0 20.082 0.006 269.994 0.016
2061.0 20.081 0.006 269.988 0.016
2062.0 20.080 0.006 269.982 0.016
2063.0 20.079 0.007 269.976 0.017
2064.0 20.078 0.007 269.971 0.017
2065.0 20.077 0.007 269.965 0.017
2066.0 20.076 0.007 269.959 0.018
2067.0 20.075 0.007 269.953 0.018
2068.0 20.073 0.007 269.947 0.018
2069.0 20.072 0.007 269.941 0.019
2070.0 20.071 0.007 269.935 0.019
2071.0 20.070 0.008 269.929 0.019
2072.0 20.069 0.008 269.923 0.020
2073.0 20.068 0.008 269.917 0.020
2074.0 20.067 0.008 269.912 0.020
2075.0 20.066 0.008 269.906 0.021
2076.0 20.065 0.008 269.900 0.021
2077.0 20.064 0.008 269.894 0.022
2078.0 20.062 0.009 269.888 0.022
2079.0 20.061 0.009 269.882 0.022
2080.0 20.060 0.009 269.876 0.023
2081.0 20.059 0.009 269.870 0.023
2082.0 20.058 0.009 269.864 0.023
2083.0 20.057 0.009 269.858 0.024
2084.0 20.056 0.009 269.852 0.024
2085.0 20.055 0.010 269.847 0.024
2086.0 20.054 0.010 269.841 0.025
2087.0 20.053 0.010 269.835 0.025
2088.0 20.052 0.010 269.829 0.025
2089.0 20.050 0.010 269.823 0.026
2090.0 20.049 0.010 269.817 0.026
2091.0 20.048 0.010 269.811 0.026
2092.0 20.047 0.011 269.805 0.027
2093.0 20.046 0.011 269.799 0.027
2094.0 20.045 0.011 269.793 0.028
2095.0 20.044 0.011 269.787 0.028
2096.0 20.043 0.011 269.782 0.028
2097.0 20.042 0.011 269.776 0.029
2098.0 20.041 0.011 269.770 0.029
2099.0 20.040 0.011 269.764 0.029
2100.0 20.038 0.012 269.758 0.030
WDS ID Discovr Comp # Sep PA Epoch Obs Telescope Camera Note
-------------------------------------------------------------------------------------------------
12351+1823 STF 1657 AB 1 20.1" 269.7° B2023.305 HWI 120/900 APO ASI120MC
-- Image of STF-1657-AB-taken with Equinox 120/900 APO --
wds_id : 12351+1823
discoverer_code : STF
discoverer_number : 1657
discoverer_components : AB
date_first : 1781
date_last : 2023
num_of_obs : 154
pa_first : 274
pa_last : 271
sep_first : 18.4
sep_last : 20.1
mag_primary : 5.11
mag_secondary : 6.33
spectral_type : K2III
primary_proper_motion_RA : -4
primary_proper_motion_DEC : 23
secondary_proper_motion_RA : -1
secondary_proper_motion_DEC : 25
dm_number : +19 2584
notes : N
precise_coordinate : 123507.76+182237.4
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 3947649169267207296
source_id = 3947649169267207296
random_index = 1044911752.0
ref_epoch = 2016.0
ra = 188.78232141709483
ra_error = 0.093278445
dec = 18.377162032190192
dec_error = 0.09480393
parallax = 8.91881462972003
parallax_error = 0.12712783
parallax_over_error = 70.15628
pm = 23.480814
pmra = -3.0299042128321383
pmra_error = 0.14152464
pmdec = 23.28450760373365
pmdec_error = 0.12027897
ra_dec_corr = -0.45468706
ra_parallax_corr = -0.16744667
ra_pmra_corr = -0.08687829
ra_pmdec_corr = 0.011371409
dec_parallax_corr = 0.032230135
dec_pmra_corr = 0.026146132
dec_pmdec_corr = 0.35178378
parallax_pmra_corr = -0.4170705
parallax_pmdec_corr = 0.18862303
pmra_pmdec_corr = -0.5129585
astrometric_n_obs_al = 155
astrometric_n_obs_ac = 155
astrometric_n_good_obs_al = 147
astrometric_n_bad_obs_al = 8
astrometric_gof_al = -2.4663355
astrometric_chi2_al = 7197.275
astrometric_excess_noise = 0.64606714
astrometric_excess_noise_sig = 390.54898
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.4610081
astrometric_matched_transits = 18
visibility_periods_used = 13
astrometric_sigma5d_max = 0.22796099
matched_transits = 24
new_matched_transits = 5
matched_transits_removed = 15
ipd_gof_harmonic_amplitude = 0.029559148
ipd_gof_harmonic_phase = 127.54283
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.8550509
duplicated_source = false
phot_g_n_obs = 185
phot_g_mean_flux = 250596402.2173572
phot_g_mean_flux_error = 216261.14
phot_g_mean_flux_over_error = 1158.7676
phot_g_mean_mag = 4.68993
phot_bp_n_obs = 22
phot_bp_mean_flux = 107978272.2089681
phot_bp_mean_flux_error = 113984.46
phot_bp_mean_flux_over_error = 947.30695
phot_bp_mean_mag = 5.2552013
phot_rp_n_obs = 21
phot_rp_mean_flux = 201974738.63884386
phot_rp_mean_flux_error = 631998.44
phot_rp_mean_flux_over_error = 319.5811
phot_rp_mean_mag = 3.9846528
phot_bp_rp_excess_factor = 1.2368613
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 = 1.2705486
bp_g = 0.5652714
g_rp = 0.7052772
radial_velocity = 3.058926
radial_velocity_error = 0.1355087
rv_method_used = 1
rv_nb_transits = 13
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 8
rv_expected_sig_to_noise = 1310.9868
rv_chisq_pvalue = 0.059425574
rv_time_duration = 832.61383
rv_amplitude_robust = 0.6390984
rv_template_teff = 4500.0
rv_template_logg = 2.5
rv_template_fe_h = 0.0
rv_atm_param_origin = 222
vbroad = 9.9238825
vbroad_error = 0.5007918
vbroad_nb_transits = 9
grvs_mag = 3.7491722
grvs_mag_error = 0.007971522
grvs_mag_nb_transits = 13
phot_variable_flag = NOT_AVAILABLE
l = 278.86124446622466
b = 80.47763907361768
ecl_lon = 180.46005677892788
ecl_lat = 20.297278279264546
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 = 1.0257038e-13
classprob_dsc_combmod_galaxy = 5.123339e-13
classprob_dsc_combmod_star = 0.9999459
Star B
solution_id = 1636148068921376768
designation = Gaia DR3 3947647760517933824
source_id = 3947647760517933824
random_index = 687834801.0
ref_epoch = 2016.0
ra = 188.77642913460787
ra_error = 0.024728686
dec = 18.377186603314435
dec_error = 0.022572197
parallax = 8.94773297214329
parallax_error = 0.030471738
parallax_over_error = 293.64038
pm = 21.307583
pmra = -1.933927777511681
pmra_error = 0.03495105
pmdec = 21.21963740261775
pmdec_error = 0.031596854
ra_dec_corr = -0.29223377
ra_parallax_corr = -0.19583593
ra_pmra_corr = -0.09225849
ra_pmdec_corr = 0.25993037
dec_parallax_corr = -0.06643089
dec_pmra_corr = 0.21145734
dec_pmdec_corr = 0.115992546
parallax_pmra_corr = -0.046492625
parallax_pmdec_corr = -0.1711577
pmra_pmdec_corr = -0.45363897
astrometric_n_obs_al = 202
astrometric_n_obs_ac = 202
astrometric_n_good_obs_al = 200
astrometric_n_bad_obs_al = 2
astrometric_gof_al = -0.7660184
astrometric_chi2_al = 904.98865
astrometric_excess_noise = 0.1773235
astrometric_excess_noise_sig = 30.657131
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.6686333
astrometric_matched_transits = 23
visibility_periods_used = 15
astrometric_sigma5d_max = 0.055990897
matched_transits = 31
new_matched_transits = 7
matched_transits_removed = 5
ipd_gof_harmonic_amplitude = 0.011383421
ipd_gof_harmonic_phase = 158.4396
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.95977634
duplicated_source = false
phot_g_n_obs = 249
phot_g_mean_flux = 46493523.11709359
phot_g_mean_flux_error = 15819.337
phot_g_mean_flux_over_error = 2939.031
phot_g_mean_mag = 6.5188856
phot_bp_n_obs = 26
phot_bp_mean_flux = 30195439.305773184
phot_bp_mean_flux_error = 38783.973
phot_bp_mean_flux_over_error = 778.55457
phot_bp_mean_mag = 6.638689
phot_rp_n_obs = 24
phot_rp_mean_flux = 24150210.387465615
phot_rp_mean_flux_error = 22115.482
phot_rp_mean_flux_over_error = 1092.0046
phot_rp_mean_mag = 6.290593
phot_bp_rp_excess_factor = 1.1688864
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 1
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 0
phot_proc_mode = 0
bp_rp = 0.3480959
bp_g = 0.11980343
g_rp = 0.22829247
phot_variable_flag = NOT_AVAILABLE
l = 278.82996371214443
b = 80.4755216072039
ecl_lon = 180.45463281547902
ecl_lat = 20.2949568481911
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 = 1.3732719e-13
classprob_dsc_combmod_galaxy = 6.8594246e-13
classprob_dsc_combmod_star = 0.99650496
teff_gspphot = 7355.294
teff_gspphot_lower = 7353.211
teff_gspphot_upper = 7357.5073
logg_gspphot = 3.6923
logg_gspphot_lower = 3.6893
logg_gspphot_upper = 3.6954
mh_gspphot = -0.4309
mh_gspphot_lower = -0.4319
mh_gspphot_upper = -0.4302
distance_gspphot = 111.1108
distance_gspphot_lower = 110.7428
distance_gspphot_upper = 111.4829
azero_gspphot = 0.0003
azero_gspphot_lower = 0.0
azero_gspphot_upper = 0.0009
ag_gspphot = 0.0003
ag_gspphot_lower = 0.0
ag_gspphot_upper = 0.0008
ebpminrp_gspphot = 0.0001
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0005
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 22:30:03 +0100
www.stella-vega.de
