Gaia Source ID - Star A : 1337345927125084416 Simbad
Gaia Source ID - Star B : 1337345922829546752 Simbad
Observation Epoch : J 2025.466 / 2025-06-20
Angular Separation : 4.126" ± 2.3712 mas
Position Angle : 320.75 ± 0.03210 degreesStar A/B Epoch : J 2016.000 / J 2016.000
Angular Separation : 4.096" ± 0.1755 mas
Position Angle : 320.47 ± 0.00230 degrees
LB of Projected Separation (AU): 411.69 AU
Spatial Separation (pc) : 11.71 ± 2.38 pc
Spatial Separation (ly) : 38.20 ± 7.77 ly
Proper Motion Angular Difference : 5.29 ± 7.09 degrees
Total Proper Motion Difference : 0.85 ± 0.30 mas/yr
Tangential Velocity Difference : 2.66 ± 0.47 km/s
Radial Velocity Difference : 9.79 ± 11.65 km/s
Space Velocity Difference : 9.16 ± 9.00 km/s
Aladin Lite Sky Atlas
DSS color
DSS blue
2MASS
AllWISE
Gaia Source ID : 1337345927125084416 Simbad 1.91
Parallax over error : 46.319 : very good
RUWE : 1.910 : poor astrometric fit, (possible double)
Duplicated source : false : single source
G magnitude : 4.473 : G > 3 mag, photometry reliable
Excess noise : 1.556 : poor fit, model deviation significant
Significance : 3555.821 : possible double star, motion, mismatch
BP-RP excess factor : 1.122 : photometry consistent
Visibility periods : 15 : high, indicates well observed star
IPD multi-peak frac : 8% : mulitple peaks detected (possible double)
IDP GoF harmonic amp: 0.037 : unobtrusive (single star source)
Gaia Source ID : 1337345922829546752 Simbad
Parallax over error : 113.833 : very good
RUWE : 0.980 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 5.459 : G > 3 mag, photometry reliable
Excess noise : 0.495 : poor fit, model deviation significant
Significance : 291.447 : possible double star, motion, mismatch
BP-RP excess factor : 1.164 : photometry consistent
Visibility periods : 15 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.020 : unobtrusive (single star source)
Spatial separation :
11.71 pc, with an uncertainty range of [ 9.33, 14.09] 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:
2.94 %
Relative Total Proper Motion difference:
2.14 %
Relative Tangential Velocity difference:
14.05 %
Relative Radial Velocity difference:
-34.12 %
Relative Space Velocity difference:
34.21 %
Estimated CPM Probability:
51.50 %
CPM-Based Evidence factor:
0.265
Combined Physical Binding Evidence factor:
0.026
RUWE probability for a binary system (Star A):
Medium
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 3.740 0.029 316.647 0.433
1901.0 3.743 0.029 316.683 0.429
1902.0 3.746 0.028 316.719 0.425
1903.0 3.749 0.028 316.755 0.421
1904.0 3.752 0.028 316.790 0.417
1905.0 3.755 0.028 316.826 0.413
1906.0 3.758 0.027 316.862 0.409
1907.0 3.761 0.027 316.898 0.405
1908.0 3.764 0.027 316.933 0.401
1909.0 3.767 0.027 316.969 0.397
1910.0 3.770 0.026 317.004 0.393
1911.0 3.773 0.026 317.040 0.389
1912.0 3.776 0.026 317.075 0.385
1913.0 3.779 0.026 317.111 0.381
1914.0 3.782 0.025 317.146 0.377
1915.0 3.785 0.025 317.181 0.373
1916.0 3.788 0.025 317.216 0.369
1917.0 3.791 0.025 317.251 0.365
1918.0 3.794 0.024 317.287 0.361
1919.0 3.797 0.024 317.322 0.357
1920.0 3.800 0.024 317.357 0.353
1921.0 3.803 0.024 317.391 0.349
1922.0 3.806 0.023 317.426 0.345
1923.0 3.809 0.023 317.461 0.341
1924.0 3.812 0.023 317.496 0.337
1925.0 3.815 0.023 317.530 0.333
1926.0 3.818 0.022 317.565 0.329
1927.0 3.821 0.022 317.600 0.325
1928.0 3.824 0.022 317.634 0.321
1929.0 3.827 0.022 317.669 0.318
1930.0 3.830 0.021 317.703 0.314
1931.0 3.833 0.021 317.737 0.310
1932.0 3.836 0.021 317.772 0.306
1933.0 3.839 0.021 317.806 0.302
1934.0 3.842 0.020 317.840 0.298
1935.0 3.845 0.020 317.874 0.294
1936.0 3.848 0.020 317.908 0.290
1937.0 3.851 0.020 317.942 0.286
1938.0 3.854 0.019 317.976 0.283
1939.0 3.858 0.019 318.010 0.279
1940.0 3.861 0.019 318.044 0.275
1941.0 3.864 0.019 318.078 0.271
1942.0 3.867 0.018 318.112 0.267
1943.0 3.870 0.018 318.145 0.263
1944.0 3.873 0.018 318.179 0.260
1945.0 3.876 0.018 318.213 0.256
1946.0 3.879 0.017 318.246 0.252
1947.0 3.882 0.017 318.280 0.248
1948.0 3.885 0.017 318.313 0.244
1949.0 3.888 0.017 318.347 0.241
1950.0 3.891 0.016 318.380 0.237
1951.0 3.894 0.016 318.413 0.233
1952.0 3.897 0.016 318.446 0.229
1953.0 3.900 0.016 318.480 0.226
1954.0 3.903 0.015 318.513 0.222
1955.0 3.906 0.015 318.546 0.218
1956.0 3.910 0.015 318.579 0.214
1957.0 3.913 0.015 318.612 0.211
1958.0 3.916 0.014 318.645 0.207
1959.0 3.919 0.014 318.678 0.203
1960.0 3.922 0.014 318.710 0.199
1961.0 3.925 0.014 318.743 0.196
1962.0 3.928 0.013 318.776 0.192
1963.0 3.931 0.013 318.809 0.188
1964.0 3.934 0.013 318.841 0.185
1965.0 3.937 0.013 318.874 0.181
1966.0 3.940 0.012 318.906 0.177
1967.0 3.943 0.012 318.939 0.173
1968.0 3.946 0.012 318.971 0.170
1969.0 3.950 0.012 319.004 0.166
1970.0 3.953 0.011 319.036 0.162
1971.0 3.956 0.011 319.068 0.159
1972.0 3.959 0.011 319.100 0.155
1973.0 3.962 0.011 319.133 0.152
1974.0 3.965 0.010 319.165 0.148
1975.0 3.968 0.010 319.197 0.144
1976.0 3.971 0.010 319.229 0.141
1977.0 3.974 0.010 319.261 0.137
1978.0 3.977 0.009 319.293 0.133
1979.0 3.980 0.009 319.324 0.130
1980.0 3.984 0.009 319.356 0.126
1981.0 3.987 0.009 319.388 0.123
1982.0 3.990 0.008 319.420 0.119
1983.0 3.993 0.008 319.451 0.115
1984.0 3.996 0.008 319.483 0.112
1985.0 3.999 0.008 319.515 0.108
1986.0 4.002 0.007 319.546 0.105
1987.0 4.005 0.007 319.578 0.101
1988.0 4.008 0.007 319.609 0.098
1989.0 4.012 0.007 319.640 0.094
1990.0 4.015 0.006 319.672 0.090
1991.0 4.018 0.006 319.703 0.087
1992.0 4.021 0.006 319.734 0.083
1993.0 4.024 0.006 319.765 0.080
1994.0 4.027 0.005 319.796 0.076
1995.0 4.030 0.005 319.827 0.073
1996.0 4.033 0.005 319.859 0.069
1997.0 4.036 0.005 319.889 0.066
1998.0 4.040 0.004 319.920 0.062
1999.0 4.043 0.004 319.951 0.059
2000.0 4.046 0.004 319.982 0.055
2001.0 4.049 0.004 320.013 0.052
2002.0 4.052 0.003 320.044 0.048
2003.0 4.055 0.003 320.074 0.045
2004.0 4.058 0.003 320.105 0.041
2005.0 4.061 0.003 320.136 0.038
2006.0 4.065 0.003 320.166 0.034
2007.0 4.068 0.002 320.197 0.031
2008.0 4.071 0.002 320.227 0.028
2009.0 4.074 0.002 320.258 0.024
2010.0 4.077 0.002 320.288 0.021
2011.0 4.080 0.001 320.318 0.017
2012.0 4.083 0.001 320.349 0.014
2013.0 4.087 0.001 320.379 0.010
2014.0 4.090 0.001 320.409 0.007
2015.0 4.093 0.000 320.439 0.004
2016.0 4.096 0.000 320.469 0.002
2017.0 4.099 0.000 320.499 0.004
2018.0 4.102 0.001 320.529 0.007
2019.0 4.105 0.001 320.559 0.010
2020.0 4.109 0.001 320.589 0.014
2021.0 4.112 0.001 320.619 0.017
2022.0 4.115 0.002 320.649 0.020
2023.0 4.118 0.002 320.678 0.024
2024.0 4.121 0.002 320.708 0.027
2025.0 4.124 0.002 320.738 0.031
2026.0 4.127 0.003 320.767 0.034
2027.0 4.131 0.003 320.797 0.037
2028.0 4.134 0.003 320.827 0.041
2029.0 4.137 0.003 320.856 0.044
2030.0 4.140 0.004 320.886 0.047
2031.0 4.143 0.004 320.915 0.051
2032.0 4.146 0.004 320.944 0.054
2033.0 4.150 0.004 320.974 0.057
2034.0 4.153 0.005 321.003 0.060
2035.0 4.156 0.005 321.032 0.064
2036.0 4.159 0.005 321.061 0.067
2037.0 4.162 0.005 321.090 0.070
2038.0 4.165 0.006 321.120 0.074
2039.0 4.169 0.006 321.149 0.077
2040.0 4.172 0.006 321.178 0.080
2041.0 4.175 0.006 321.207 0.084
2042.0 4.178 0.007 321.235 0.087
2043.0 4.181 0.007 321.264 0.090
2044.0 4.184 0.007 321.293 0.093
2045.0 4.188 0.007 321.322 0.097
2046.0 4.191 0.008 321.351 0.100
2047.0 4.194 0.008 321.379 0.103
2048.0 4.197 0.008 321.408 0.106
2049.0 4.200 0.008 321.437 0.110
2050.0 4.203 0.009 321.465 0.113
2051.0 4.207 0.009 321.494 0.116
2052.0 4.210 0.009 321.522 0.119
2053.0 4.213 0.009 321.551 0.122
2054.0 4.216 0.010 321.579 0.126
2055.0 4.219 0.010 321.607 0.129
2056.0 4.223 0.010 321.636 0.132
2057.0 4.226 0.010 321.664 0.135
2058.0 4.229 0.011 321.692 0.138
2059.0 4.232 0.011 321.720 0.142
2060.0 4.235 0.011 321.749 0.145
2061.0 4.239 0.011 321.777 0.148
2062.0 4.242 0.012 321.805 0.151
2063.0 4.245 0.012 321.833 0.154
2064.0 4.248 0.012 321.861 0.158
2065.0 4.251 0.012 321.889 0.161
2066.0 4.254 0.013 321.917 0.164
2067.0 4.258 0.013 321.944 0.167
2068.0 4.261 0.013 321.972 0.170
2069.0 4.264 0.013 322.000 0.173
2070.0 4.267 0.014 322.028 0.176
2071.0 4.270 0.014 322.055 0.180
2072.0 4.274 0.014 322.083 0.183
2073.0 4.277 0.014 322.111 0.186
2074.0 4.280 0.015 322.138 0.189
2075.0 4.283 0.015 322.166 0.192
2076.0 4.286 0.015 322.193 0.195
2077.0 4.290 0.015 322.221 0.198
2078.0 4.293 0.016 322.248 0.201
2079.0 4.296 0.016 322.275 0.204
2080.0 4.299 0.016 322.303 0.207
2081.0 4.303 0.016 322.330 0.211
2082.0 4.306 0.017 322.357 0.214
2083.0 4.309 0.017 322.384 0.217
2084.0 4.312 0.017 322.411 0.220
2085.0 4.315 0.017 322.439 0.223
2086.0 4.319 0.018 322.466 0.226
2087.0 4.322 0.018 322.493 0.229
2088.0 4.325 0.018 322.520 0.232
2089.0 4.328 0.018 322.547 0.235
2090.0 4.331 0.019 322.573 0.238
2091.0 4.335 0.019 322.600 0.241
2092.0 4.338 0.019 322.627 0.244
2093.0 4.341 0.019 322.654 0.247
2094.0 4.344 0.020 322.681 0.250
2095.0 4.348 0.020 322.707 0.253
2096.0 4.351 0.020 322.734 0.256
2097.0 4.354 0.020 322.761 0.259
2098.0 4.357 0.021 322.787 0.262
2099.0 4.360 0.021 322.814 0.265
2100.0 4.364 0.021 322.840 0.268
WDS ID Discovr Comp # Sep PA Epoch Obs Telescope Camera Note
-------------------------------------------------------------------------------------------------
17237+3709 STF 2161 AB 1 4.09" 320.5° B2025.468 HWI 120/900 APO ASI678MM
-- Image of STF-2161-AB-taken with Equinox 120/900 APO --
wds_id : 17237+3709
discoverer_code : STF
discoverer_number : 2161
discoverer_components : AB
date_first : 1821
date_last : 2023
num_of_obs : 420
pa_first : 308
pa_last : 320
sep_first : 4.5
sep_last : 3.9
mag_primary : 4.5
mag_secondary : 5.4
spectral_type : B9.5III
primary_proper_motion_RA : -41
primary_proper_motion_DEC : 1
secondary_proper_motion_RA : -39
secondary_proper_motion_DEC : 9
dm_number :
notes : N
precise_coordinate : 172340.97+370845.3
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 1337345927125084416
source_id = 1337345927125084416
random_index = 126411693.0
ref_epoch = 2016.0
ra = 260.92033980430506
ra_error = 0.17909823
dec = 37.14593982283389
dec_error = 0.1800224
parallax = 9.949080945671241
parallax_error = 0.21479401
parallax_over_error = 46.319176
pm = 39.77658
pmra = -39.6174812075671
pmra_error = 0.2942484
pmdec = 3.554095244355816
pmdec_error = 0.2415089
ra_dec_corr = 0.24168909
ra_parallax_corr = 0.064284764
ra_pmra_corr = 0.042719085
ra_pmdec_corr = -0.02022681
dec_parallax_corr = 0.090228416
dec_pmra_corr = -0.005649794
dec_pmdec_corr = -0.30377847
parallax_pmra_corr = 0.37958127
parallax_pmdec_corr = 0.11389373
pmra_pmdec_corr = 0.31567842
astrometric_n_obs_al = 176
astrometric_n_obs_ac = 176
astrometric_n_good_obs_al = 174
astrometric_n_bad_obs_al = 2
astrometric_gof_al = 14.897214
astrometric_chi2_al = 81691.56
astrometric_excess_noise = 1.5558845
astrometric_excess_noise_sig = 3555.821
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.7535288
astrometric_matched_transits = 20
visibility_periods_used = 15
astrometric_sigma5d_max = 0.4389867
matched_transits = 22
new_matched_transits = 9
matched_transits_removed = 12
ipd_gof_harmonic_amplitude = 0.036940943
ipd_gof_harmonic_phase = 155.50948
ipd_frac_multi_peak = 8
ipd_frac_odd_win = 0
ruwe = 1.9090167
duplicated_source = false
phot_g_n_obs = 179
phot_g_mean_flux = 305937470.61741555
phot_g_mean_flux_error = 517109.03
phot_g_mean_flux_over_error = 591.6305
phot_g_mean_mag = 4.473285
phot_bp_n_obs = 22
phot_bp_mean_flux = 216009857.70082694
phot_bp_mean_flux_error = 262466.38
phot_bp_mean_flux_over_error = 823.0001
phot_bp_mean_mag = 4.5023584
phot_rp_n_obs = 21
phot_rp_mean_flux = 127275917.45521638
phot_rp_mean_flux_error = 285934.03
phot_rp_mean_flux_over_error = 445.12335
phot_rp_mean_mag = 4.48603
phot_bp_rp_excess_factor = 1.1220782
phot_bp_n_contaminated_transits = 8
phot_bp_n_blended_transits = 2
phot_rp_n_contaminated_transits = 6
phot_rp_n_blended_transits = 2
phot_proc_mode = 0
bp_rp = 0.016328335
bp_g = 0.029073238
g_rp = -0.012744904
radial_velocity = -18.904598
radial_velocity_error = 6.3259506
rv_method_used = 1
rv_nb_transits = 9
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 9
rv_expected_sig_to_noise = 828.162
rv_chisq_pvalue = 2.9976022e-15
rv_time_duration = 870.85376
rv_amplitude_robust = 6.303524
rv_template_teff = 9500.0
rv_template_logg = 4.0
rv_template_fe_h = 0.0
rv_atm_param_origin = 555
vbroad = 101.29835
vbroad_error = 113.88258
vbroad_nb_transits = 9
grvs_mag = 4.450265
grvs_mag_error = 0.04275131
grvs_mag_nb_transits = 9
phot_variable_flag = NOT_AVAILABLE
l = 61.442140641776184
b = 32.71054843732781
ecl_lon = 255.37264876536648
ecl_lat = 60.12501123109172
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 = 1.05914e-13
classprob_dsc_combmod_galaxy = 5.2903515e-13
classprob_dsc_combmod_star = 0.9996173
Star B
solution_id = 1636148068921376768
designation = Gaia DR3 1337345922829546752
source_id = 1337345922829546752
random_index = 62740737.0
ref_epoch = 2016.0
ra = 260.91943127206116
ra_error = 0.05678547
dec = 37.146817359892445
dec_error = 0.06387158
parallax = 8.910829989175383
parallax_error = 0.07827988
parallax_over_error = 113.83295
pm = 40.6295
pmra = -39.95985905357233
pmra_error = 0.06840155
pmdec = 7.346161889922408
pmdec_error = 0.08381213
ra_dec_corr = 0.006117396
ra_parallax_corr = -0.14372583
ra_pmra_corr = 0.27705312
ra_pmdec_corr = -0.160693
dec_parallax_corr = -0.12297771
dec_pmra_corr = -0.20074166
dec_pmdec_corr = -0.028182251
parallax_pmra_corr = -0.3303835
parallax_pmdec_corr = -0.3801051
pmra_pmdec_corr = 0.21909277
astrometric_n_obs_al = 168
astrometric_n_obs_ac = 168
astrometric_n_good_obs_al = 164
astrometric_n_bad_obs_al = 4
astrometric_gof_al = -0.3514664
astrometric_chi2_al = 5742.443
astrometric_excess_noise = 0.4950557
astrometric_excess_noise_sig = 291.44727
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.7514687
astrometric_matched_transits = 19
visibility_periods_used = 15
astrometric_sigma5d_max = 0.12328796
matched_transits = 21
new_matched_transits = 6
matched_transits_removed = 16
ipd_gof_harmonic_amplitude = 0.020353558
ipd_gof_harmonic_phase = 56.903778
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.97827375
duplicated_source = false
phot_g_n_obs = 181
phot_g_mean_flux = 123385970.34250271
phot_g_mean_flux_error = 99225.016
phot_g_mean_flux_over_error = 1243.4966
phot_g_mean_mag = 5.4592023
phot_bp_n_obs = 21
phot_bp_mean_flux = 90049810.16745886
phot_bp_mean_flux_error = 131255.56
phot_bp_mean_flux_over_error = 686.0647
phot_bp_mean_mag = 5.4523354
phot_rp_n_obs = 18
phot_rp_mean_flux = 53523037.52552993
phot_rp_mean_flux_error = 124256.0
phot_rp_mean_flux_over_error = 430.7481
phot_rp_mean_mag = 5.4265437
phot_bp_rp_excess_factor = 1.1636076
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 21
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 18
phot_proc_mode = 0
bp_rp = 0.025791645
bp_g = -0.006866932
g_rp = 0.032658577
radial_velocity = -28.696327
radial_velocity_error = 9.77976
rv_method_used = 1
rv_nb_transits = 11
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 11
rv_expected_sig_to_noise = 577.3622
rv_chisq_pvalue = 0.0
rv_time_duration = 870.85376
rv_amplitude_robust = 18.294388
rv_template_teff = 11500.0
rv_template_logg = 4.5
rv_template_fe_h = -0.5
rv_atm_param_origin = 555
vbroad = 170.08678
vbroad_error = 44.413483
vbroad_nb_transits = 11
grvs_mag = 5.397807
grvs_mag_error = 0.0110292025
grvs_mag_nb_transits = 11
phot_variable_flag = NOT_AVAILABLE
l = 61.442997513028125
b = 32.71142861299491
ecl_lon = 255.37098443750236
ecl_lat = 60.12579050304344
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 = 1.0675768e-13
classprob_dsc_combmod_galaxy = 5.332493e-13
classprob_dsc_combmod_star = 0.99953187
teff_gspphot = 9791.3125
teff_gspphot_lower = 9741.402
teff_gspphot_upper = 9851.024
logg_gspphot = 3.7254
logg_gspphot_lower = 3.7134
logg_gspphot_upper = 3.7372
mh_gspphot = -0.7015
mh_gspphot_lower = -0.7761
mh_gspphot_upper = -0.6615
distance_gspphot = 117.2477
distance_gspphot_lower = 114.488
distance_gspphot_upper = 119.105
azero_gspphot = 0.1058
azero_gspphot_lower = 0.0989
azero_gspphot_upper = 0.1134
ag_gspphot = 0.1019
ag_gspphot_lower = 0.0952
ag_gspphot_upper = 0.1092
ebpminrp_gspphot = 0.0543
ebpminrp_gspphot_lower = 0.0507
ebpminrp_gspphot_upper = 0.0582
libname_gspphot = A
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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 22:33:12 +0100
www.stella-vega.de
