Gaia Source ID - Star A : 818084995217230592 Simbad
Gaia Source ID - Star B : 818084926497754112 Simbad
Observation Epoch : J 2025.255 / 2025-04-04
Angular Separation : 23.939" ± 0.3013 mas
Position Angle : 177.33 ± 0.00050 degreesStar A/B Epoch : J 2016.000 / J 2016.000
Angular Separation : 23.858" ± 0.0251 mas
Position Angle : 176.18 ± 0.00005 degrees
LB of Projected Separation (AU): 3687.15 AU
Spatial Separation (pc) : 406.21 ± 13.93 pc
Spatial Separation (ly) : 1324.87 ± 45.42 ly
Proper Motion Angular Difference : 78.95 ± 6.28 degrees
Total Proper Motion Difference : 47.38 ± 0.03 mas/yr
Tangential Velocity Difference : 23.28 ± 0.41 km/s
Radial Velocity Difference : 11.32 ± 0.78 km/s
Space Velocity Difference : 11.29 ± 0.62 km/s
Aladin Lite Sky Atlas
DSS color
DSS blue
2MASS
AllWISE
Gaia Source ID : 818084995217230592 Simbad
Parallax over error : 40.278 : very good
RUWE : 1.290 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 6.379 : G > 3 mag, photometry reliable
Excess noise : 0.291 : poor fit, model deviation significant
Significance : 107.232 : possible double star, motion, mismatch
BP-RP excess factor : 1.555 : photometry inconsistent
Visibility periods : 20 : high, indicates well observed star
IPD multi-peak frac : 0% : single peak detected
IDP GoF harmonic amp: 0.097 : slight indication of structure
Gaia Source ID : 818084926497754112 Simbad
Parallax over error : 434.885 : very good
RUWE : 0.870 : good astrometric fit (single star)
Duplicated source : false : single source
G magnitude : 9.257 : G > 3 mag, photometry reliable
Excess noise : 0.073 : poor fit, model deviation significant
Significance : 7.975 : possible double star, motion, mismatch
BP-RP excess factor : 1.185 : photometry consistent
Visibility periods : 22 : high, indicates well observed star
IPD multi-peak frac : 1% : mulitple peaks detected (possible double)
IDP GoF harmonic amp: 0.024 : unobtrusive (single star source)
Spatial separation :
406.21 pc, with an uncertainty range of [ 392.28, 420.13] 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:
43.86 %
Relative Total Proper Motion difference:
797.73 %
Relative Tangential Velocity difference:
147.42 %
Relative Radial Velocity difference:
76.95 %
Relative Space Velocity difference:
37.07 %
Estimated CPM Probability:
0.04 %
CPM-Based Evidence factor:
0.000
Combined Physical Binding Evidence factor:
0.026
RUWE probability for a binary system (Star A):
Low
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 23.678 0.004 161.466 0.007
1901.0 23.672 0.004 161.592 0.007
1902.0 23.667 0.004 161.719 0.007
1903.0 23.662 0.004 161.845 0.007
1904.0 23.658 0.004 161.972 0.007
1905.0 23.653 0.004 162.099 0.007
1906.0 23.648 0.003 162.225 0.007
1907.0 23.644 0.003 162.352 0.007
1908.0 23.640 0.003 162.479 0.006
1909.0 23.635 0.003 162.606 0.006
1910.0 23.631 0.003 162.733 0.006
1911.0 23.627 0.003 162.860 0.006
1912.0 23.624 0.003 162.987 0.006
1913.0 23.620 0.003 163.114 0.006
1914.0 23.616 0.003 163.241 0.006
1915.0 23.613 0.003 163.368 0.006
1916.0 23.609 0.003 163.495 0.006
1917.0 23.606 0.003 163.622 0.006
1918.0 23.603 0.003 163.750 0.006
1919.0 23.600 0.003 163.877 0.006
1920.0 23.597 0.003 164.004 0.006
1921.0 23.594 0.003 164.131 0.006
1922.0 23.591 0.003 164.259 0.006
1923.0 23.589 0.003 164.386 0.006
1924.0 23.586 0.003 164.514 0.006
1925.0 23.584 0.003 164.641 0.005
1926.0 23.582 0.003 164.768 0.005
1927.0 23.580 0.003 164.896 0.005
1928.0 23.578 0.003 165.023 0.005
1929.0 23.576 0.003 165.151 0.005
1930.0 23.574 0.003 165.278 0.005
1931.0 23.572 0.003 165.406 0.005
1932.0 23.571 0.003 165.534 0.005
1933.0 23.569 0.003 165.661 0.005
1934.0 23.568 0.003 165.789 0.005
1935.0 23.567 0.003 165.916 0.005
1936.0 23.566 0.003 166.044 0.005
1937.0 23.565 0.003 166.172 0.005
1938.0 23.564 0.002 166.299 0.005
1939.0 23.563 0.002 166.427 0.005
1940.0 23.563 0.002 166.555 0.005
1941.0 23.562 0.002 166.682 0.004
1942.0 23.562 0.002 166.810 0.004
1943.0 23.562 0.002 166.938 0.004
1944.0 23.562 0.002 167.065 0.004
1945.0 23.562 0.002 167.193 0.004
1946.0 23.562 0.002 167.321 0.004
1947.0 23.562 0.002 167.448 0.004
1948.0 23.562 0.002 167.576 0.004
1949.0 23.563 0.002 167.704 0.004
1950.0 23.563 0.002 167.831 0.004
1951.0 23.564 0.002 167.959 0.004
1952.0 23.565 0.002 168.087 0.004
1953.0 23.566 0.002 168.214 0.004
1954.0 23.567 0.002 168.342 0.004
1955.0 23.568 0.002 168.470 0.004
1956.0 23.569 0.002 168.597 0.004
1957.0 23.571 0.002 168.725 0.003
1958.0 23.572 0.002 168.852 0.003
1959.0 23.574 0.002 168.980 0.003
1960.0 23.575 0.002 169.108 0.003
1961.0 23.577 0.002 169.235 0.003
1962.0 23.579 0.002 169.363 0.003
1963.0 23.581 0.002 169.490 0.003
1964.0 23.584 0.002 169.617 0.003
1965.0 23.586 0.002 169.745 0.003
1966.0 23.588 0.002 169.872 0.003
1967.0 23.591 0.002 170.000 0.003
1968.0 23.594 0.002 170.127 0.003
1969.0 23.596 0.002 170.254 0.003
1970.0 23.599 0.001 170.382 0.003
1971.0 23.602 0.001 170.509 0.003
1972.0 23.605 0.001 170.636 0.003
1973.0 23.609 0.001 170.763 0.003
1974.0 23.612 0.001 170.890 0.002
1975.0 23.616 0.001 171.018 0.002
1976.0 23.619 0.001 171.145 0.002
1977.0 23.623 0.001 171.272 0.002
1978.0 23.627 0.001 171.399 0.002
1979.0 23.631 0.001 171.526 0.002
1980.0 23.635 0.001 171.653 0.002
1981.0 23.639 0.001 171.779 0.002
1982.0 23.643 0.001 171.906 0.002
1983.0 23.648 0.001 172.033 0.002
1984.0 23.652 0.001 172.160 0.002
1985.0 23.657 0.001 172.286 0.002
1986.0 23.662 0.001 172.413 0.002
1987.0 23.667 0.001 172.540 0.002
1988.0 23.672 0.001 172.666 0.002
1989.0 23.677 0.001 172.793 0.002
1990.0 23.682 0.001 172.919 0.002
1991.0 23.687 0.001 173.045 0.001
1992.0 23.693 0.001 173.172 0.001
1993.0 23.698 0.001 173.298 0.001
1994.0 23.704 0.001 173.424 0.001
1995.0 23.710 0.001 173.550 0.001
1996.0 23.716 0.001 173.676 0.001
1997.0 23.722 0.001 173.802 0.001
1998.0 23.728 0.001 173.928 0.001
1999.0 23.734 0.001 174.054 0.001
2000.0 23.740 0.001 174.180 0.001
2001.0 23.747 0.000 174.306 0.001
2002.0 23.754 0.000 174.431 0.001
2003.0 23.760 0.000 174.557 0.001
2004.0 23.767 0.000 174.683 0.001
2005.0 23.774 0.000 174.808 0.001
2006.0 23.781 0.000 174.933 0.001
2007.0 23.788 0.000 175.059 0.001
2008.0 23.796 0.000 175.184 0.000
2009.0 23.803 0.000 175.309 0.000
2010.0 23.811 0.000 175.434 0.000
2011.0 23.818 0.000 175.559 0.000
2012.0 23.826 0.000 175.684 0.000
2013.0 23.834 0.000 175.809 0.000
2014.0 23.842 0.000 175.934 0.000
2015.0 23.850 0.000 176.058 0.000
2016.0 23.858 0.000 176.183 0.000
2017.0 23.866 0.000 176.307 0.000
2018.0 23.875 0.000 176.432 0.000
2019.0 23.883 0.000 176.556 0.000
2020.0 23.892 0.000 176.680 0.000
2021.0 23.901 0.000 176.804 0.000
2022.0 23.910 0.000 176.928 0.000
2023.0 23.919 0.000 177.052 0.000
2024.0 23.928 0.000 177.176 0.000
2025.0 23.937 0.000 177.300 0.001
2026.0 23.946 0.000 177.424 0.001
2027.0 23.956 0.000 177.547 0.001
2028.0 23.965 0.000 177.671 0.001
2029.0 23.975 0.000 177.794 0.001
2030.0 23.984 0.000 177.917 0.001
2031.0 23.994 0.000 178.040 0.001
2032.0 24.004 0.001 178.164 0.001
2033.0 24.014 0.001 178.286 0.001
2034.0 24.025 0.001 178.409 0.001
2035.0 24.035 0.001 178.532 0.001
2036.0 24.045 0.001 178.655 0.001
2037.0 24.056 0.001 178.777 0.001
2038.0 24.067 0.001 178.900 0.001
2039.0 24.077 0.001 179.022 0.001
2040.0 24.088 0.001 179.144 0.001
2041.0 24.099 0.001 179.266 0.001
2042.0 24.110 0.001 179.388 0.001
2043.0 24.121 0.001 179.510 0.002
2044.0 24.133 0.001 179.632 0.002
2045.0 24.144 0.001 179.754 0.002
2046.0 24.156 0.001 179.875 0.002
2047.0 24.167 0.001 179.997 0.002
2048.0 24.179 0.001 180.118 0.002
2049.0 24.191 0.001 180.239 0.002
2050.0 24.203 0.001 180.360 0.002
2051.0 24.215 0.001 180.481 0.002
2052.0 24.227 0.001 180.602 0.002
2053.0 24.239 0.001 180.723 0.002
2054.0 24.252 0.001 180.843 0.002
2055.0 24.264 0.001 180.964 0.002
2056.0 24.277 0.001 181.084 0.002
2057.0 24.290 0.001 181.204 0.002
2058.0 24.302 0.001 181.324 0.002
2059.0 24.315 0.001 181.444 0.002
2060.0 24.328 0.001 181.564 0.002
2061.0 24.341 0.001 181.684 0.003
2062.0 24.355 0.001 181.803 0.003
2063.0 24.368 0.002 181.923 0.003
2064.0 24.381 0.002 182.042 0.003
2065.0 24.395 0.002 182.161 0.003
2066.0 24.409 0.002 182.280 0.003
2067.0 24.422 0.002 182.399 0.003
2068.0 24.436 0.002 182.518 0.003
2069.0 24.450 0.002 182.637 0.003
2070.0 24.464 0.002 182.755 0.003
2071.0 24.479 0.002 182.874 0.003
2072.0 24.493 0.002 182.992 0.003
2073.0 24.507 0.002 183.110 0.003
2074.0 24.522 0.002 183.228 0.003
2075.0 24.536 0.002 183.346 0.003
2076.0 24.551 0.002 183.463 0.003
2077.0 24.566 0.002 183.581 0.003
2078.0 24.581 0.002 183.698 0.003
2079.0 24.596 0.002 183.815 0.004
2080.0 24.611 0.002 183.933 0.004
2081.0 24.626 0.002 184.050 0.004
2082.0 24.641 0.002 184.166 0.004
2083.0 24.657 0.002 184.283 0.004
2084.0 24.672 0.002 184.400 0.004
2085.0 24.688 0.002 184.516 0.004
2086.0 24.704 0.002 184.632 0.004
2087.0 24.720 0.002 184.748 0.004
2088.0 24.735 0.002 184.864 0.004
2089.0 24.751 0.002 184.980 0.004
2090.0 24.768 0.002 185.096 0.004
2091.0 24.784 0.002 185.211 0.004
2092.0 24.800 0.002 185.326 0.004
2093.0 24.817 0.002 185.442 0.004
2094.0 24.833 0.003 185.557 0.004
2095.0 24.850 0.003 185.671 0.004
2096.0 24.867 0.003 185.786 0.004
2097.0 24.883 0.003 185.901 0.005
2098.0 24.900 0.003 186.015 0.005
2099.0 24.917 0.003 186.129 0.005
2100.0 24.934 0.003 186.243 0.005
WDS ID Discovr Comp # Sep PA Epoch Obs Telescope Camera Note
--------------------------------------------------------------------------------------------------
09309+4441 STF 1358 1 23.81" 177.5° B2025.260 HWI 120/900 APO ASI678MM
-- Image of STF-1358-taken with Equinox 120/900 APO --
wds_id : 09309+4441
discoverer_code : STF
discoverer_number : 1358
discoverer_components :
date_first : 1828
date_last : 2019
num_of_obs : 39
pa_first : 150
pa_last : 176
sep_first : 20.0
sep_last : 24.1
mag_primary : 7.93
mag_secondary : 9.25
spectral_type : M
primary_proper_motion_RA : 3
primary_proper_motion_DEC : -7
secondary_proper_motion_RA : -50
secondary_proper_motion_DEC : -17
dm_number : +45 1728
notes : NL
precise_coordinate : 093056.58+444102.1
WDS Notes:
----------
N: Notes found in WDSNOT MEMO of WDS
L: Linear solution determined
Click to expand/collapse the Gaia Input Data:
Star A
solution_id = 1636148068921376768
designation = Gaia DR3 818084995217230592
source_id = 818084995217230592
random_index = 1242859245.0
ref_epoch = 2016.0
ra = 142.73573993108408
ra_error = 0.028244395
dec = 44.683887178505685
dec_error = 0.023439601
parallax = 1.7833145866253304
parallax_error = 0.044275664
parallax_over_error = 40.277534
pm = 5.93956
pmra = 0.8449498798883024
pmra_error = 0.03175776
pmdec = -5.879152356606909
pmdec_error = 0.030558577
ra_dec_corr = -0.24205188
ra_parallax_corr = -0.13194442
ra_pmra_corr = 0.12817001
ra_pmdec_corr = 0.29495758
dec_parallax_corr = 0.10166488
dec_pmra_corr = 0.21318665
dec_pmdec_corr = -0.29088214
parallax_pmra_corr = 0.14951538
parallax_pmdec_corr = -0.014034731
pmra_pmdec_corr = -0.073146895
astrometric_n_obs_al = 363
astrometric_n_obs_ac = 363
astrometric_n_good_obs_al = 363
astrometric_n_bad_obs_al = 0
astrometric_gof_al = 7.502919
astrometric_chi2_al = 3614.9321
astrometric_excess_noise = 0.29111964
astrometric_excess_noise_sig = 107.232185
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.2400831
astrometric_matched_transits = 41
visibility_periods_used = 20
astrometric_sigma5d_max = 0.04614576
matched_transits = 44
new_matched_transits = 14
matched_transits_removed = 14
ipd_gof_harmonic_amplitude = 0.09716176
ipd_gof_harmonic_phase = 147.34529
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.2921047
duplicated_source = false
phot_g_n_obs = 362
phot_g_mean_flux = 52900580.2262145
phot_g_mean_flux_error = 384536.88
phot_g_mean_flux_over_error = 137.5696
phot_g_mean_mag = 6.378716
phot_bp_n_obs = 41
phot_bp_mean_flux = 7346150.140014033
phot_bp_mean_flux_error = 248537.56
phot_bp_mean_flux_over_error = 29.557505
phot_bp_mean_mag = 8.173392
phot_rp_n_obs = 41
phot_rp_mean_flux = 74928300.94715431
phot_rp_mean_flux_error = 1129916.4
phot_rp_mean_flux_over_error = 66.31314
phot_rp_mean_mag = 5.0612807
phot_bp_rp_excess_factor = 1.5552655
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 = 3.1121116
bp_g = 1.7946763
g_rp = 1.3174353
radial_velocity = 26.041973
radial_velocity_error = 0.65907216
rv_method_used = 1
rv_nb_transits = 22
rv_nb_deblended_transits = 0
rv_visibility_periods_used = 14
rv_expected_sig_to_noise = 1242.0275
rv_chisq_pvalue = 0.0
rv_time_duration = 980.2708
rv_amplitude_robust = 6.9838963
rv_template_teff = 3700.0
rv_template_logg = 4.0
rv_template_fe_h = 0.0
rv_atm_param_origin = 440
vbroad = 7.705255
vbroad_error = 2.7007499
vbroad_nb_transits = 20
grvs_mag = 4.4909353
grvs_mag_error = 0.038097773
grvs_mag_nb_transits = 22
phot_variable_flag = VARIABLE
l = 175.47869142130773
b = 46.58044692862925
ecl_lon = 129.98569981567553
ecl_lat = 28.289343418019513
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 = 1.0645612e-13
classprob_dsc_combmod_galaxy = 5.31743e-13
classprob_dsc_combmod_star = 0.999561
Star B
solution_id = 1636148068921376768
designation = Gaia DR3 818084926497754112
source_id = 818084926497754112
random_index = 626722830.0
ref_epoch = 2016.0
ra = 142.73636039910954
ra_error = 0.0105870655
dec = 44.67727465925984
dec_error = 0.009008331
parallax = 6.470571256733725
parallax_error = 0.014878825
parallax_over_error = 434.88455
pm = 53.321243
pmra = -50.345417122926996
pmra_error = 0.011769783
pmdec = -17.564000574126617
pmdec_error = 0.010942159
ra_dec_corr = -0.33241257
ra_parallax_corr = -0.36058632
ra_pmra_corr = -0.06432171
ra_pmdec_corr = 0.35056373
dec_parallax_corr = 0.16088846
dec_pmra_corr = 0.2215243
dec_pmdec_corr = -0.44389245
parallax_pmra_corr = 0.10869843
parallax_pmdec_corr = -0.24538876
pmra_pmdec_corr = -0.11264347
astrometric_n_obs_al = 486
astrometric_n_obs_ac = 486
astrometric_n_good_obs_al = 475
astrometric_n_bad_obs_al = 11
astrometric_gof_al = -4.0046573
astrometric_chi2_al = 796.7987
astrometric_excess_noise = 0.0729187
astrometric_excess_noise_sig = 7.974954
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.6132171
astrometric_matched_transits = 55
visibility_periods_used = 22
astrometric_sigma5d_max = 0.017975409
matched_transits = 57
new_matched_transits = 20
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.024232166
ipd_gof_harmonic_phase = 147.63467
ipd_frac_multi_peak = 1
ipd_frac_odd_win = 0
ruwe = 0.8715911
duplicated_source = false
phot_g_n_obs = 473
phot_g_mean_flux = 3733409.342700525
phot_g_mean_flux_error = 579.5504
phot_g_mean_flux_over_error = 6441.9062
phot_g_mean_mag = 9.257103
phot_bp_n_obs = 56
phot_bp_mean_flux = 2224249.303429743
phot_bp_mean_flux_error = 720.26044
phot_bp_mean_flux_over_error = 3088.1182
phot_bp_mean_mag = 9.470584
phot_rp_n_obs = 53
phot_rp_mean_flux = 2200963.161491644
phot_rp_mean_flux_error = 730.7606
phot_rp_mean_flux_over_error = 3011.88
phot_rp_mean_mag = 8.891363
phot_bp_rp_excess_factor = 1.1853006
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 = 0.5792208
bp_g = 0.21348095
g_rp = 0.36573982
radial_velocity = 14.717518
radial_velocity_error = 0.42177722
rv_method_used = 1
rv_nb_transits = 21
rv_nb_deblended_transits = 10
rv_visibility_periods_used = 13
rv_expected_sig_to_noise = 156.39752
rv_renormalised_gof = 4.855847
rv_chisq_pvalue = 1.5160406e-07
rv_time_duration = 980.2708
rv_amplitude_robust = 6.1880016
rv_template_teff = 6500.0
rv_template_logg = 4.0
rv_template_fe_h = -0.5
rv_atm_param_origin = 444
vbroad = 41.22639
vbroad_error = 1.8804061
vbroad_nb_transits = 8
grvs_mag = 8.730549
grvs_mag_error = 0.0062261806
grvs_mag_nb_transits = 8
phot_variable_flag = NOT_AVAILABLE
l = 175.48817956945854
b = 46.58162611639192
ecl_lon = 129.98886687911644
ecl_lat = 28.28333158265706
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 = 1.3750302e-13
classprob_dsc_combmod_galaxy = 6.868207e-13
classprob_dsc_combmod_star = 0.99648726
teff_gspphot = 6501.946
teff_gspphot_lower = 6500.4897
teff_gspphot_upper = 6504.445
logg_gspphot = 4.1814
logg_gspphot_lower = 4.1793
logg_gspphot_upper = 4.1836
mh_gspphot = -0.1972
mh_gspphot_lower = -0.2032
mh_gspphot_upper = -0.1914
distance_gspphot = 153.8455
distance_gspphot_lower = 153.4727
distance_gspphot_upper = 154.2339
azero_gspphot = 0.0008
azero_gspphot_lower = 0.0001
azero_gspphot_upper = 0.0023
ag_gspphot = 0.0007
ag_gspphot_lower = 0.0001
ag_gspphot_upper = 0.002
ebpminrp_gspphot = 0.0004
ebpminrp_gspphot_lower = 0.0
ebpminrp_gspphot_upper = 0.0011
libname_gspphot = MARCS
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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 22:28:33 +0100
www.stella-vega.de
