Double Star Calculator - Results


Discoverer & Number: HJ 1796 -> DSCALC Archive
Gaia Source ID - Star A          : 2006840790679122688    Simbad
Gaia Source ID - Star B          : 2006840790676091776    Simbad
Observation Epoch : J 2025.715 / 2025-09-19 Angular Separation : 32.585" ± 1.3412 mas Position Angle : 5.52 ± 0.00150 degrees
Star A/B Epoch : J 2016.000 / J 2016.000 Angular Separation : 32.313" ± 0.1331 mas Position Angle : 6.22 ± 0.00013 degrees LB of Projected Separation (AU): 4473.41 AU Spatial Separation (pc) : 348.41 ± 4.43 pc Spatial Separation (ly) : 1136.36 ± 14.45 ly Proper Motion Angular Difference : 31.95 ± 5.91 degrees Total Proper Motion Difference : 46.84 ± 0.15 mas/yr Tangential Velocity Difference : 6.31 ± 0.94 km/s

Aladin Lite Sky Atlas



Star A
Gaia Source ID                   : 2006840790679122688  Simbad
Epoch : J 2016.000 Right Ascension (RA) : 22h 38m 38.03s Declination (Dec) : 56° 47' 43.77" Distance (pc) : 138.44 ± 3.09 pc Distance (ly) : 451.53 ± 10.09 ly Magnitude (Gaia G-band) : 3.86 mag Absolute Magnitude : -1.84 ± 0.11 mag Spectral Type (color index) : M Luminosity (solar luminosities) : 403.39 +43.74/−39.46 L☉ Mass estimation (solar masses) : 15.29 M☉ RUWE : 1.58 Position Angle of Proper Motion : 121.14 ± 0.66 degrees Total Proper Motion : 61.63 ± 0.15 mas/yr Total Proper Motion (Gaia) : 61.63 mas/yr Tangential Velocity : 40.45 ± 0.91 km/s
Star A - Double Star Quality Metrics
Parallax over error :     44.735 : very good
RUWE                :      1.580 : poor astrometric fit, (possible double)
Duplicated source   :      false : single source
G magnitude         :      3.862 : G > 3 mag, photometry reliable
Excess noise        :      1.335 : poor fit, model deviation significant
  Significance      :   2507.776 :   possible double star, motion, mismatch
BP-RP excess factor :      1.347 : photometry inconsistent
Visibility periods  :         21 : high, indicates well observed star
IPD multi-peak frac :        11% : mulitple peaks detected (possible double)
IDP GoF harmonic amp:      0.027 : unobtrusive (single star source)

Star B
Gaia Source ID                   : 2006840790676091776  Simbad
Epoch : J 2016.000 Right Ascension (RA) : 22h 38m 38.45s Declination (Dec) : 56° 48' 15.89" Distance (parsecs) : 486.85 ± 3.17 pc Distance (lightyears) : 1587.89 ± 10.34 ly Magnitude (Gaia G-band) : 11.18 mag Absolute Magnitude : 2.75 ± 0.03 mag Spectral Type (color index) : F Luminosity (solar luminosities) : 5.88 +0.18/−0.17 L☉ Mass estimation (solar masses) : 1.88 M☉ RUWE : 0.82 Position Angle of Proper Motion : 89.18 ± 5.87 degrees Total Proper Motion : 14.79 ± 0.01 mas/yr Total Proper Motion (Gaia) : 14.79 mas/yr Tangential Velocity : 34.14 ± 0.22 km/s

Star B - Double Star Quality Metrics
Parallax over error :    153.620 : very good
RUWE                :      0.820 : good astrometric fit (single star)
Duplicated source   :      false : single source
G magnitude         :     11.183 : G > 3 mag, photometry reliable
Excess noise        :      0.099 : poor fit, model deviation significant
  Significance      :     15.037 :   possible double star, motion, mismatch
BP-RP excess factor :      1.190 : photometry consistent
Visibility periods  :         25 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.020 : unobtrusive (single star source)

Double Star plausibility checks

Check separation:
Spatial separation : 348.41 pc, with an uncertainty range of [ 343.98, 352.84] 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

Check proper motion:

Relative Proper Motion Angular difference: 17.75 %
Relative Total Proper Motion difference: 316.64 %
Relative Tangential Velocity difference: 18.47 %
Estimated CPM Probability: 4.32 %
CPM-Based Evidence factor: 0.002

Physical Binding Evidence:
Combined Physical Binding Evidence factor: 0.026

Check RUWE parameters:
RUWE probability for a binary system (Star A): Medium
RUWE probability for a binary system (Star B): Zero

Separation and position angle as a function of Julian Epoch

-- 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     29.481    0.016      15.554    0.020
1901.0     29.502    0.015      15.466    0.020
1902.0     29.523    0.015      15.379    0.020
1903.0     29.544    0.015      15.291    0.020
1904.0     29.565    0.015      15.204    0.019
1905.0     29.586    0.015      15.117    0.019
1906.0     29.607    0.015      15.030    0.019
1907.0     29.628    0.015      14.943    0.019
1908.0     29.649    0.015      14.856    0.019
1909.0     29.671    0.014      14.769    0.018
1910.0     29.692    0.014      14.682    0.018
1911.0     29.713    0.014      14.596    0.018
1912.0     29.735    0.014      14.510    0.018
1913.0     29.756    0.014      14.423    0.018
1914.0     29.778    0.014      14.337    0.017
1915.0     29.800    0.014      14.251    0.017
1916.0     29.822    0.014      14.165    0.017
1917.0     29.843    0.013      14.080    0.017
1918.0     29.865    0.013      13.994    0.017
1919.0     29.887    0.013      13.909    0.016
1920.0     29.909    0.013      13.823    0.016
1921.0     29.932    0.013      13.738    0.016
1922.0     29.954    0.013      13.653    0.016
1923.0     29.976    0.013      13.568    0.016
1924.0     29.998    0.012      13.483    0.015
1925.0     30.021    0.012      13.399    0.015
1926.0     30.043    0.012      13.314    0.015
1927.0     30.066    0.012      13.230    0.015
1928.0     30.088    0.012      13.145    0.015
1929.0     30.111    0.012      13.061    0.015
1930.0     30.134    0.012      12.977    0.014
1931.0     30.156    0.012      12.893    0.014
1932.0     30.179    0.011      12.809    0.014
1933.0     30.202    0.011      12.725    0.014
1934.0     30.225    0.011      12.642    0.014
1935.0     30.248    0.011      12.558    0.013
1936.0     30.271    0.011      12.475    0.013
1937.0     30.294    0.011      12.392    0.013
1938.0     30.317    0.011      12.309    0.013
1939.0     30.341    0.010      12.226    0.013
1940.0     30.364    0.010      12.143    0.013
1941.0     30.387    0.010      12.060    0.012
1942.0     30.411    0.010      11.978    0.012
1943.0     30.435    0.010      11.896    0.012
1944.0     30.458    0.010      11.813    0.012
1945.0     30.482    0.010      11.731    0.012
1946.0     30.505    0.010      11.649    0.011
1947.0     30.529    0.009      11.567    0.011
1948.0     30.553    0.009      11.485    0.011
1949.0     30.577    0.009      11.404    0.011
1950.0     30.601    0.009      11.322    0.011
1951.0     30.625    0.009      11.241    0.011
1952.0     30.649    0.009      11.159    0.010
1953.0     30.673    0.009      11.078    0.010
1954.0     30.697    0.008      10.997    0.010
1955.0     30.722    0.008      10.916    0.010
1956.0     30.746    0.008      10.836    0.010
1957.0     30.771    0.008      10.755    0.010
1958.0     30.795    0.008      10.675    0.009
1959.0     30.820    0.008      10.594    0.009
1960.0     30.844    0.008      10.514    0.009
1961.0     30.869    0.008      10.434    0.009
1962.0     30.893    0.007      10.354    0.009
1963.0     30.918    0.007      10.274    0.009
1964.0     30.943    0.007      10.194    0.008
1965.0     30.968    0.007      10.115    0.008
1966.0     30.993    0.007      10.035    0.008
1967.0     31.018    0.007       9.956    0.008
1968.0     31.043    0.007       9.876    0.008
1969.0     31.068    0.006       9.797    0.007
1970.0     31.093    0.006       9.718    0.007
1971.0     31.118    0.006       9.640    0.007
1972.0     31.144    0.006       9.561    0.007
1973.0     31.169    0.006       9.482    0.007
1974.0     31.195    0.006       9.404    0.007
1975.0     31.220    0.006       9.325    0.006
1976.0     31.246    0.005       9.247    0.006
1977.0     31.271    0.005       9.169    0.006
1978.0     31.297    0.005       9.091    0.006
1979.0     31.322    0.005       9.013    0.006
1980.0     31.348    0.005       8.936    0.006
1981.0     31.374    0.005       8.858    0.006
1982.0     31.400    0.005       8.781    0.005
1983.0     31.426    0.005       8.703    0.005
1984.0     31.452    0.004       8.626    0.005
1985.0     31.478    0.004       8.549    0.005
1986.0     31.504    0.004       8.472    0.005
1987.0     31.530    0.004       8.395    0.005
1988.0     31.556    0.004       8.319    0.004
1989.0     31.583    0.004       8.242    0.004
1990.0     31.609    0.004       8.166    0.004
1991.0     31.635    0.003       8.090    0.004
1992.0     31.662    0.003       8.013    0.004
1993.0     31.688    0.003       7.937    0.004
1994.0     31.715    0.003       7.861    0.003
1995.0     31.742    0.003       7.786    0.003
1996.0     31.768    0.003       7.710    0.003
1997.0     31.795    0.003       7.635    0.003
1998.0     31.822    0.002       7.559    0.003
1999.0     31.849    0.002       7.484    0.003
2000.0     31.875    0.002       7.409    0.002
2001.0     31.902    0.002       7.334    0.002
2002.0     31.929    0.002       7.259    0.002
2003.0     31.956    0.002       7.184    0.002
2004.0     31.984    0.002       7.109    0.002
2005.0     32.011    0.002       7.035    0.002
2006.0     32.038    0.001       6.961    0.002
2007.0     32.065    0.001       6.886    0.001
2008.0     32.093    0.001       6.812    0.001
2009.0     32.120    0.001       6.738    0.001
2010.0     32.147    0.001       6.664    0.001
2011.0     32.175    0.001       6.590    0.001
2012.0     32.202    0.001       6.517    0.001
2013.0     32.230    0.000       6.443    0.000
2014.0     32.258    0.000       6.370    0.000
2015.0     32.285    0.000       6.297    0.000
2016.0     32.313    0.000       6.224    0.000
2017.0     32.341    0.000       6.151    0.000
2018.0     32.369    0.000       6.078    0.000
2019.0     32.397    0.000       6.005    0.000
2020.0     32.425    0.001       5.932    0.001
2021.0     32.453    0.001       5.860    0.001
2022.0     32.481    0.001       5.787    0.001
2023.0     32.509    0.001       5.715    0.001
2024.0     32.537    0.001       5.643    0.001
2025.0     32.565    0.001       5.571    0.001
2026.0     32.593    0.001       5.499    0.002
2027.0     32.622    0.002       5.428    0.002
2028.0     32.650    0.002       5.356    0.002
2029.0     32.679    0.002       5.284    0.002
2030.0     32.707    0.002       5.213    0.002
2031.0     32.735    0.002       5.142    0.002
2032.0     32.764    0.002       5.071    0.002
2033.0     32.793    0.002       5.000    0.003
2034.0     32.821    0.002       4.929    0.003
2035.0     32.850    0.003       4.858    0.003
2036.0     32.879    0.003       4.787    0.003
2037.0     32.908    0.003       4.717    0.003
2038.0     32.937    0.003       4.646    0.003
2039.0     32.965    0.003       4.576    0.003
2040.0     32.994    0.003       4.506    0.004
2041.0     33.023    0.003       4.436    0.004
2042.0     33.053    0.004       4.366    0.004
2043.0     33.082    0.004       4.296    0.004
2044.0     33.111    0.004       4.227    0.004
2045.0     33.140    0.004       4.157    0.004
2046.0     33.169    0.004       4.088    0.004
2047.0     33.199    0.004       4.019    0.005
2048.0     33.228    0.004       3.949    0.005
2049.0     33.257    0.005       3.880    0.005
2050.0     33.287    0.005       3.811    0.005
2051.0     33.316    0.005       3.743    0.005
2052.0     33.346    0.005       3.674    0.005
2053.0     33.376    0.005       3.605    0.005
2054.0     33.405    0.005       3.537    0.006
2055.0     33.435    0.005       3.469    0.006
2056.0     33.465    0.006       3.401    0.006
2057.0     33.494    0.006       3.333    0.006
2058.0     33.524    0.006       3.265    0.006
2059.0     33.554    0.006       3.197    0.006
2060.0     33.584    0.006       3.129    0.006
2061.0     33.614    0.006       3.062    0.006
2062.0     33.644    0.006       2.994    0.007
2063.0     33.674    0.006       2.927    0.007
2064.0     33.704    0.007       2.860    0.007
2065.0     33.734    0.007       2.792    0.007
2066.0     33.765    0.007       2.725    0.007
2067.0     33.795    0.007       2.659    0.007
2068.0     33.825    0.007       2.592    0.007
2069.0     33.856    0.007       2.525    0.008
2070.0     33.886    0.007       2.459    0.008
2071.0     33.916    0.008       2.392    0.008
2072.0     33.947    0.008       2.326    0.008
2073.0     33.977    0.008       2.260    0.008
2074.0     34.008    0.008       2.194    0.008
2075.0     34.039    0.008       2.128    0.008
2076.0     34.069    0.008       2.062    0.009
2077.0     34.100    0.008       1.997    0.009
2078.0     34.131    0.009       1.931    0.009
2079.0     34.162    0.009       1.866    0.009
2080.0     34.192    0.009       1.800    0.009
2081.0     34.223    0.009       1.735    0.009
2082.0     34.254    0.009       1.670    0.009
2083.0     34.285    0.009       1.605    0.009
2084.0     34.316    0.009       1.540    0.010
2085.0     34.347    0.010       1.476    0.010
2086.0     34.379    0.010       1.411    0.010
2087.0     34.410    0.010       1.346    0.010
2088.0     34.441    0.010       1.282    0.010
2089.0     34.472    0.010       1.218    0.010
2090.0     34.503    0.010       1.154    0.010
2091.0     34.535    0.010       1.090    0.011
2092.0     34.566    0.010       1.026    0.011
2093.0     34.598    0.011       0.962    0.011
2094.0     34.629    0.011       0.898    0.011
2095.0     34.660    0.011       0.835    0.011
2096.0     34.692    0.011       0.771    0.011
2097.0     34.724    0.011       0.708    0.011
2098.0     34.755    0.011       0.645    0.011
2099.0     34.787    0.011       0.582    0.012
2100.0     34.819    0.012       0.519    0.012


Measurements for HJ 1796
 
WDS ID      Discovr     Comp  #    Sep      PA       Epoch      Obs  Telescope     Camera    Note
--------------------------------------------------------------------------------------------------
22386+5648  HJ 1796           1    32.70"   5.7°     B2025.720  HWI  120/900 APO   ASI678MM  

-- Image of HJ-1796-taken with Equinox 120/900 APO --


WDS record for HJ 1796
wds_id                       : 22386+5648
discoverer_code              : HJ
discoverer_number            : 1796
discoverer_components        : 
date_first                   : 1904
date_last                    : 2004
num_of_obs                   : 11
pa_first                     : 15
pa_last                      : 6
sep_first                    : 30.0
sep_last                     : 31.8
mag_primary                  : 5.35
mag_secondary                : 10.46
spectral_type                : M4III
primary_proper_motion_RA     : 52
primary_proper_motion_DEC    : -31
secondary_proper_motion_RA   : 17
secondary_proper_motion_DEC  : 1
dm_number                    : +56 2821
notes                        : U
precise_coordinate           : 223837.92+564744.3

WDS Notes:
----------
U: Proper motion or other technique: non-physical



Parsed GAIA Input Data
Click to expand/collapse the Gaia Input Data:
Star A
solution_id = 1636148068921376768
designation = Gaia DR3 2006840790679122688
source_id = 2006840790679122688
random_index = 535060121.0
ref_epoch = 2016.0
ra = 339.65844191354597
ra_error = 0.13157769
dec = 56.795491107670266
dec_error = 0.13321392
parallax = 7.223356589961869
parallax_error = 0.1614698
parallax_over_error = 44.73503
pm = 61.63277
pmra = 52.75411149993622
pmra_error = 0.15353611
pmdec = -31.86851520713843
pmdec_error = 0.13725626
ra_dec_corr = -0.16082309
ra_parallax_corr = 0.055563524
ra_pmra_corr = -0.025974963
ra_pmdec_corr = -0.20470732
dec_parallax_corr = 0.26773697
dec_pmra_corr = -0.36238962
dec_pmdec_corr = -0.028936608
parallax_pmra_corr = -0.3503186
parallax_pmdec_corr = 0.2957488
pmra_pmdec_corr = -0.22370881
astrometric_n_obs_al = 267
astrometric_n_obs_ac = 267
astrometric_n_good_obs_al = 262
astrometric_n_bad_obs_al = 5
astrometric_gof_al = 12.189546
astrometric_chi2_al = 68822.03
astrometric_excess_noise = 1.3351227
astrometric_excess_noise_sig = 2507.776
astrometric_params_solved = 95
astrometric_primary_flag = false
pseudocolour = 1.1755164
pseudocolour_error = 0.036987375
ra_pseudocolour_corr = -0.23294543
dec_pseudocolour_corr = -0.060870215
parallax_pseudocolour_corr = -0.14736857
pmra_pseudocolour_corr = 0.20641543
pmdec_pseudocolour_corr = -0.14490655
astrometric_matched_transits = 30
visibility_periods_used = 21
astrometric_sigma5d_max = 0.23601173
matched_transits = 36
new_matched_transits = 36
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.026649477
ipd_gof_harmonic_phase = 176.08194
ipd_frac_multi_peak = 11
ipd_frac_odd_win = 0
ruwe = 1.5829934
duplicated_source = false
phot_g_n_obs = 278
phot_g_mean_flux = 537215778.5816356
phot_g_mean_flux_error = 1229244.0
phot_g_mean_flux_over_error = 437.02942
phot_g_mean_mag = 3.861995
phot_bp_n_obs = 34
phot_bp_mean_flux = 92581091.71365452
phot_bp_mean_flux_error = 896810.7
phot_bp_mean_flux_over_error = 103.2337
phot_bp_mean_mag = 5.4222364
phot_rp_n_obs = 34
phot_rp_mean_flux = 630915628.5602511
phot_rp_mean_flux_error = 3989271.8
phot_rp_mean_flux_over_error = 158.15308
phot_rp_mean_mag = 2.7479672
phot_bp_rp_excess_factor = 1.3467525
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 = 2.6742692
bp_g = 1.5602415
g_rp = 1.1140277
phot_variable_flag = VARIABLE
l = 105.47590755691678
b = -1.5064140978894975
ecl_lon = 17.121022405390192
ecl_lat = 57.500842688608394
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 = 1.0765377e-13
classprob_dsc_combmod_galaxy = 5.377252e-13
classprob_dsc_combmod_star = 0.99944246
    Star B
solution_id = 1636148068921376768
designation = Gaia DR3 2006840790676091776
source_id = 2006840790676091776
random_index = 546726217.0
ref_epoch = 2016.0
ra = 339.6602191994338
ra_error = 0.010986102
dec = 56.80441403817835
dec_error = 0.010545583
parallax = 2.0540197150408726
parallax_error = 0.0133708
parallax_over_error = 153.61981
pm = 14.792861
pmra = 14.791362708511963
pmra_error = 0.013861152
pmdec = 0.21052723328861794
pmdec_error = 0.01188388
ra_dec_corr = -0.11847087
ra_parallax_corr = 0.15074816
ra_pmra_corr = -0.07464503
ra_pmdec_corr = -0.184565
dec_parallax_corr = 0.20900445
dec_pmra_corr = -0.28492627
dec_pmdec_corr = 0.019190988
parallax_pmra_corr = -0.20913847
parallax_pmdec_corr = 0.22574647
pmra_pmdec_corr = -0.2055322
astrometric_n_obs_al = 401
astrometric_n_obs_ac = 401
astrometric_n_good_obs_al = 398
astrometric_n_bad_obs_al = 3
astrometric_gof_al = -5.302169
astrometric_chi2_al = 975.02686
astrometric_excess_noise = 0.09933185
astrometric_excess_noise_sig = 15.036589
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.5835538
astrometric_matched_transits = 45
visibility_periods_used = 25
astrometric_sigma5d_max = 0.020421807
matched_transits = 53
new_matched_transits = 22
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.020377548
ipd_gof_harmonic_phase = 11.398587
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.8161779
duplicated_source = false
phot_g_n_obs = 446
phot_g_mean_flux = 633233.237409496
phot_g_mean_flux_error = 291.6452
phot_g_mean_flux_over_error = 2171.245
phot_g_mean_mag = 11.183457
phot_bp_n_obs = 50
phot_bp_mean_flux = 359111.0235731116
phot_bp_mean_flux_error = 459.70242
phot_bp_mean_flux_over_error = 781.1815
phot_bp_mean_mag = 11.45047
phot_rp_n_obs = 50
phot_rp_mean_flux = 394140.6641495262
phot_rp_mean_flux_error = 308.76318
phot_rp_mean_flux_over_error = 1276.5144
phot_rp_mean_mag = 10.758767
phot_bp_rp_excess_factor = 1.1895328
phot_bp_n_contaminated_transits = 0
phot_bp_n_blended_transits = 49
phot_rp_n_contaminated_transits = 0
phot_rp_n_blended_transits = 49
phot_proc_mode = 0
bp_rp = 0.69170284
bp_g = 0.2670126
g_rp = 0.42469025
phot_variable_flag = VARIABLE
l = 105.48110893092876
b = -1.4990976726289655
ecl_lon = 17.13385645927596
ecl_lat = 57.506589367999666
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 2
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 = 1.0256868e-13
classprob_dsc_combmod_galaxy = 5.1232537e-13
classprob_dsc_combmod_star = 0.9999459
teff_gspphot = 7362.0605
teff_gspphot_lower = 7353.2915
teff_gspphot_upper = 7370.492
logg_gspphot = 4.0733
logg_gspphot_lower = 4.0684
logg_gspphot_upper = 4.0782
mh_gspphot = -0.0467
mh_gspphot_lower = -0.0546
mh_gspphot_upper = -0.0399
distance_gspphot = 474.0682
distance_gspphot_lower = 471.3669
distance_gspphot_upper = 476.9992
azero_gspphot = 0.7161
azero_gspphot_lower = 0.7118
azero_gspphot_upper = 0.7202
ag_gspphot = 0.6318
ag_gspphot_lower = 0.6279
ag_gspphot_upper = 0.6355
ebpminrp_gspphot = 0.3389
ebpminrp_gspphot_lower = 0.3368
ebpminrp_gspphot_upper = 0.3409
libname_gspphot = A




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: 1734 $)
Report created: 2025-12-29 22:24:39 +0100



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