Double Star Calculator - Results

Discoverer & Number:

LDS 1046

Gaia Source ID - Star A          : 1750816656275568000    Simbad
Gaia Source ID - Star B          : 1750816651978245248    Simbad

Observation Epoch                : J 2025.017  /  2025-01-07
Angular Separation               :     15.077" ±   0.4402 mas
Position Angle                   :     344.78  ±  0.00210 degrees

Star A/B Epoch                   : J 2016.000  /   J 2016.000
Angular Separation               :     15.094" ±   0.0281 mas
Position Angle                   :     344.55  ±  0.00016 degrees
  LB of Projected Separation (AU):     373.07             AU
  Spatial Separation   (AU)      :   13275.59  ±  7330.72 AU
Proper Motion Angular Difference :       0.76  ±     0.04 degrees
Total Proper Motion Difference   :       6.46  ±     0.06 mas/yr
Tangential Velocity Difference   :       0.83  ±     0.04 km/s

Aladin Lite Sky Atlas

DSS color DSS blue 2MASS AllWISE

Star A

Gaia Source ID                   : 1750816656275568000  Simbad

Epoch                            : J 2016.000
Right Ascension (RA)             :     20h 44m 30.94s
Declination (Dec)                :     8° 54' 12.56"
Distance (pc)                    :      24.72  ±   0.01 pc
Distance (ly)                    :      80.62  ±   0.04 ly
Magnitude (Gaia G-band)          :      10.46           mag
Absolute Magnitude               :       8.50  ±   0.00 mag
Spectral Type (color index)      :          M
Luminosity (solar luminosities)  :       0.03  +0.00/−0.00    L☉
Mass estimation (solar masses)   :       0.20                 M☉
RUWE                             :       0.95
Position Angle of Proper Motion  :      64.15  ±   0.01 degrees
Total Proper Motion              :     223.80  ±   0.02 mas/yr
  Total Proper Motion (Gaia)     :     223.80           mas/yr
Tangential Velocity              :      26.22  ±   0.01 km/s
Radial Velocity (Gaia)           :     -28.57  ±   0.19 km/s
Space Velocity                   :      38.78  ±   0.14 km/s

Star A - Double Star Quality Metrics

Parallax over error :   2292.057 : very good
RUWE                :      0.950 : good astrometric fit (single star)
Duplicated source   :      false : single source
G magnitude         :     10.462 : G > 3 mag, photometry reliable
Excess noise        :      0.080 : poor fit, model deviation significant
  Significance      :      8.528 :   possible double star, motion, mismatch
BP-RP excess factor :      1.355 : photometry inconsistent
Visibility periods  :         18 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.021 : unobtrusive (single star source)

Star B

Gaia Source ID                   : 1750816651978245248  Simbad

Epoch                            : J 2016.000
Right Ascension (RA)             :     20h 44m 30.67s
Declination (Dec)                :     8° 54' 27.11"
Distance (parsecs)               :      24.78  ±   0.03 pc
Distance (lightyears)            :      80.83  ±   0.11 ly
Magnitude (Gaia G-band)          :      11.38           mag
Absolute Magnitude               :       9.41  ±   0.01 mag
Spectral Type (color index)      :          M
Luminosity (solar luminosities)  :       0.01  +0.00/−0.00    L☉
Mass estimation (solar masses)   :       0.14                 M☉
RUWE                             :       1.95
Position Angle of Proper Motion  :      64.91  ±   0.04 degrees
Total Proper Motion              :     230.26  ±   0.06 mas/yr
  Total Proper Motion (Gaia)     :     230.26           mas/yr
Tangential Velocity              :      27.05  ±   0.04 km/s

Star B - Double Star Quality Metrics

Parallax over error :    731.446 : very good
RUWE                :      1.950 : poor astrometric fit, (possible double)
Duplicated source   :      false : single source
G magnitude         :     11.381 : G > 3 mag, photometry reliable
Excess noise        :      0.371 : poor fit, model deviation significant
  Significance      :    209.240 :   possible double star, motion, mismatch
BP-RP excess factor :      1.444 : photometry inconsistent
Visibility periods  :         17 : high, indicates well observed star
IPD multi-peak frac :         0% : single peak detected
IDP GoF harmonic amp:      0.011 : unobtrusive (single star source)

Double Star plausibility checks

Check separation:

Spatial separation :		13275.6 AU, with an uncertainty range of [ 5944.9, 20606.3] AU

Probability for a physical pair:		Very Low (Nominal) / Low (at lower bound of uncertainty)

Separation-Based Evidence factor:		0.131 (Nominal) / Flag: normal

Check proper motion:

Relative Proper Motion Angular difference:		0.42 %

Relative Total Proper Motion difference:		2.88 %

Relative Tangential Velocity difference:		3.15 %

Estimated CPM Probability:		97.95 %

CPM-Based Evidence factor:		0.959

Physical Binding Evidence:

Combined Physical Binding Evidence factor:

0.242

Check RUWE parameters:

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

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     15.329    0.006     341.559    0.026
1901.0     15.327    0.006     341.585    0.025
1902.0     15.324    0.006     341.610    0.025
1903.0     15.322    0.006     341.636    0.025
1904.0     15.320    0.006     341.661    0.025
1905.0     15.318    0.005     341.686    0.025
1906.0     15.316    0.005     341.712    0.024
1907.0     15.313    0.005     341.737    0.024
1908.0     15.311    0.005     341.762    0.024
1909.0     15.309    0.005     341.788    0.024
1910.0     15.307    0.005     341.813    0.024
1911.0     15.305    0.005     341.839    0.023
1912.0     15.303    0.005     341.864    0.023
1913.0     15.300    0.005     341.889    0.023
1914.0     15.298    0.005     341.915    0.023
1915.0     15.296    0.005     341.940    0.022
1916.0     15.294    0.005     341.966    0.022
1917.0     15.292    0.005     341.991    0.022
1918.0     15.290    0.005     342.017    0.022
1919.0     15.288    0.005     342.042    0.022
1920.0     15.285    0.005     342.068    0.021
1921.0     15.283    0.005     342.093    0.021
1922.0     15.281    0.005     342.119    0.021
1923.0     15.279    0.005     342.144    0.021
1924.0     15.277    0.005     342.170    0.020
1925.0     15.275    0.004     342.195    0.020
1926.0     15.273    0.004     342.221    0.020
1927.0     15.270    0.004     342.246    0.020
1928.0     15.268    0.004     342.272    0.020
1929.0     15.266    0.004     342.297    0.019
1930.0     15.264    0.004     342.323    0.019
1931.0     15.262    0.004     342.348    0.019
1932.0     15.260    0.004     342.374    0.019
1933.0     15.258    0.004     342.400    0.019
1934.0     15.256    0.004     342.425    0.018
1935.0     15.254    0.004     342.451    0.018
1936.0     15.252    0.004     342.476    0.018
1937.0     15.249    0.004     342.502    0.018
1938.0     15.247    0.004     342.528    0.017
1939.0     15.245    0.004     342.553    0.017
1940.0     15.243    0.004     342.579    0.017
1941.0     15.241    0.004     342.604    0.017
1942.0     15.239    0.004     342.630    0.017
1943.0     15.237    0.004     342.656    0.016
1944.0     15.235    0.004     342.681    0.016
1945.0     15.233    0.003     342.707    0.016
1946.0     15.231    0.003     342.733    0.016
1947.0     15.229    0.003     342.758    0.015
1948.0     15.227    0.003     342.784    0.015
1949.0     15.225    0.003     342.810    0.015
1950.0     15.223    0.003     342.835    0.015
1951.0     15.220    0.003     342.861    0.015
1952.0     15.218    0.003     342.887    0.014
1953.0     15.216    0.003     342.913    0.014
1954.0     15.214    0.003     342.938    0.014
1955.0     15.212    0.003     342.964    0.014
1956.0     15.210    0.003     342.990    0.013
1957.0     15.208    0.003     343.015    0.013
1958.0     15.206    0.003     343.041    0.013
1959.0     15.204    0.003     343.067    0.013
1960.0     15.202    0.003     343.093    0.013
1961.0     15.200    0.003     343.118    0.012
1962.0     15.198    0.003     343.144    0.012
1963.0     15.196    0.003     343.170    0.012
1964.0     15.194    0.003     343.196    0.012
1965.0     15.192    0.002     343.222    0.011
1966.0     15.190    0.002     343.247    0.011
1967.0     15.188    0.002     343.273    0.011
1968.0     15.186    0.002     343.299    0.011
1969.0     15.184    0.002     343.325    0.011
1970.0     15.182    0.002     343.351    0.010
1971.0     15.180    0.002     343.376    0.010
1972.0     15.178    0.002     343.402    0.010
1973.0     15.176    0.002     343.428    0.010
1974.0     15.174    0.002     343.454    0.009
1975.0     15.172    0.002     343.480    0.009
1976.0     15.170    0.002     343.506    0.009
1977.0     15.168    0.002     343.532    0.009
1978.0     15.166    0.002     343.558    0.009
1979.0     15.164    0.002     343.583    0.008
1980.0     15.162    0.002     343.609    0.008
1981.0     15.160    0.002     343.635    0.008
1982.0     15.158    0.002     343.661    0.008
1983.0     15.157    0.002     343.687    0.007
1984.0     15.155    0.002     343.713    0.007
1985.0     15.153    0.002     343.739    0.007
1986.0     15.151    0.001     343.765    0.007
1987.0     15.149    0.001     343.791    0.007
1988.0     15.147    0.001     343.817    0.006
1989.0     15.145    0.001     343.843    0.006
1990.0     15.143    0.001     343.869    0.006
1991.0     15.141    0.001     343.895    0.006
1992.0     15.139    0.001     343.921    0.005
1993.0     15.137    0.001     343.947    0.005
1994.0     15.135    0.001     343.973    0.005
1995.0     15.133    0.001     343.999    0.005
1996.0     15.131    0.001     344.025    0.005
1997.0     15.130    0.001     344.051    0.004
1998.0     15.128    0.001     344.077    0.004
1999.0     15.126    0.001     344.103    0.004
2000.0     15.124    0.001     344.129    0.004
2001.0     15.122    0.001     344.155    0.003
2002.0     15.120    0.001     344.181    0.003
2003.0     15.118    0.001     344.207    0.003
2004.0     15.116    0.001     344.233    0.003
2005.0     15.114    0.001     344.259    0.002
2006.0     15.113    0.000     344.285    0.002
2007.0     15.111    0.000     344.311    0.002
2008.0     15.109    0.000     344.337    0.002
2009.0     15.107    0.000     344.363    0.002
2010.0     15.105    0.000     344.389    0.001
2011.0     15.103    0.000     344.415    0.001
2012.0     15.101    0.000     344.441    0.001
2013.0     15.099    0.000     344.468    0.001
2014.0     15.098    0.000     344.494    0.000
2015.0     15.096    0.000     344.520    0.000
2016.0     15.094    0.000     344.546    0.000
2017.0     15.092    0.000     344.572    0.000
2018.0     15.090    0.000     344.598    0.000
2019.0     15.088    0.000     344.624    0.001
2020.0     15.087    0.000     344.651    0.001
2021.0     15.085    0.000     344.677    0.001
2022.0     15.083    0.000     344.703    0.001
2023.0     15.081    0.000     344.729    0.002
2024.0     15.079    0.000     344.755    0.002
2025.0     15.077    0.000     344.781    0.002
2026.0     15.076    0.000     344.808    0.002
2027.0     15.074    0.001     344.834    0.002
2028.0     15.072    0.001     344.860    0.003
2029.0     15.070    0.001     344.886    0.003
2030.0     15.068    0.001     344.912    0.003
2031.0     15.067    0.001     344.939    0.003
2032.0     15.065    0.001     344.965    0.004
2033.0     15.063    0.001     344.991    0.004
2034.0     15.061    0.001     345.017    0.004
2035.0     15.059    0.001     345.044    0.004
2036.0     15.058    0.001     345.070    0.005
2037.0     15.056    0.001     345.096    0.005
2038.0     15.054    0.001     345.122    0.005
2039.0     15.052    0.001     345.149    0.005
2040.0     15.051    0.001     345.175    0.005
2041.0     15.049    0.001     345.201    0.006
2042.0     15.047    0.001     345.228    0.006
2043.0     15.045    0.001     345.254    0.006
2044.0     15.044    0.001     345.280    0.006
2045.0     15.042    0.001     345.306    0.007
2046.0     15.040    0.001     345.333    0.007
2047.0     15.038    0.002     345.359    0.007
2048.0     15.036    0.002     345.385    0.007
2049.0     15.035    0.002     345.412    0.008
2050.0     15.033    0.002     345.438    0.008
2051.0     15.031    0.002     345.464    0.008
2052.0     15.030    0.002     345.491    0.008
2053.0     15.028    0.002     345.517    0.008
2054.0     15.026    0.002     345.544    0.009
2055.0     15.024    0.002     345.570    0.009
2056.0     15.023    0.002     345.596    0.009
2057.0     15.021    0.002     345.623    0.009
2058.0     15.019    0.002     345.649    0.010
2059.0     15.018    0.002     345.675    0.010
2060.0     15.016    0.002     345.702    0.010
2061.0     15.014    0.002     345.728    0.010
2062.0     15.012    0.002     345.755    0.010
2063.0     15.011    0.002     345.781    0.011
2064.0     15.009    0.002     345.808    0.011
2065.0     15.007    0.002     345.834    0.011
2066.0     15.006    0.002     345.860    0.011
2067.0     15.004    0.002     345.887    0.012
2068.0     15.002    0.003     345.913    0.012
2069.0     15.001    0.003     345.940    0.012
2070.0     14.999    0.003     345.966    0.012
2071.0     14.997    0.003     345.993    0.013
2072.0     14.996    0.003     346.019    0.013
2073.0     14.994    0.003     346.046    0.013
2074.0     14.992    0.003     346.072    0.013
2075.0     14.991    0.003     346.099    0.013
2076.0     14.989    0.003     346.125    0.014
2077.0     14.987    0.003     346.152    0.014
2078.0     14.986    0.003     346.178    0.014
2079.0     14.984    0.003     346.205    0.014
2080.0     14.982    0.003     346.231    0.015
2081.0     14.981    0.003     346.258    0.015
2082.0     14.979    0.003     346.284    0.015
2083.0     14.977    0.003     346.311    0.015
2084.0     14.976    0.003     346.337    0.016
2085.0     14.974    0.003     346.364    0.016
2086.0     14.973    0.003     346.390    0.016
2087.0     14.971    0.003     346.417    0.016
2088.0     14.969    0.003     346.444    0.016
2089.0     14.968    0.004     346.470    0.017
2090.0     14.966    0.004     346.497    0.017
2091.0     14.964    0.004     346.523    0.017
2092.0     14.963    0.004     346.550    0.017
2093.0     14.961    0.004     346.576    0.018
2094.0     14.960    0.004     346.603    0.018
2095.0     14.958    0.004     346.630    0.018
2096.0     14.956    0.004     346.656    0.018
2097.0     14.955    0.004     346.683    0.019
2098.0     14.953    0.004     346.710    0.019
2099.0     14.952    0.004     346.736    0.019
2100.0     14.950    0.004     346.763    0.019

WDS record for LDS 1046

wds_id                       : 20446+0854
discoverer_code              : LDS
discoverer_number            : 1046
discoverer_components        : 
date_first                   : 1936
date_last                    : 2016
num_of_obs                   : 26
pa_first                     : 342
pa_last                      : 344
sep_first                    : 16.0
sep_last                     : 15.0
mag_primary                  : 11.06
mag_secondary                : 12.11
spectral_type                : M1.5V+M4V
primary_proper_motion_RA     : 216
primary_proper_motion_DEC    : 37
secondary_proper_motion_RA   : 216
secondary_proper_motion_DEC  : 37
dm_number                    : 
notes                        : V
precise_coordinate           : 204430.72+085411.0

WDS Notes:
----------
V: Proper motion or other technique: physical

Parsed GAIA Input Data

Click to expand/collapse the Gaia Input Data:

Star A

solution_id = 1636148068921376768
designation = Gaia DR3 1750816656275568000
source_id = 1750816656275568000
random_index = 1379949597.0
ref_epoch = 2016.0
ra = 311.128911853424
ra_error = 0.014437392
dec = 8.90348875019165
dec_error = 0.008419208
parallax = 40.458374148398065
parallax_error = 0.017651558
parallax_over_error = 2292.057
pm = 223.80167
pmra = 201.40154807375006
pmra_error = 0.019721264
pmdec = 97.59406624482926
pmdec_error = 0.014534113
ra_dec_corr = 0.1538877
ra_parallax_corr = 0.38525793
ra_pmra_corr = -0.3785851
ra_pmdec_corr = -0.09229618
dec_parallax_corr = 0.14660612
dec_pmra_corr = -0.025291236
dec_pmdec_corr = -0.380253
parallax_pmra_corr = -0.22148228
parallax_pmdec_corr = -0.22513376
pmra_pmdec_corr = -0.10438125
astrometric_n_obs_al = 408
astrometric_n_obs_ac = 408
astrometric_n_good_obs_al = 402
astrometric_n_bad_obs_al = 6
astrometric_gof_al = -1.4018215
astrometric_chi2_al = 734.13873
astrometric_excess_noise = 0.08006768
astrometric_excess_noise_sig = 8.527907
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.3367549
astrometric_matched_transits = 46
visibility_periods_used = 18
astrometric_sigma5d_max = 0.028256893
matched_transits = 50
new_matched_transits = 14
matched_transits_removed = 1
ipd_gof_harmonic_amplitude = 0.021263674
ipd_gof_harmonic_phase = 160.96048
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 0.94984055
duplicated_source = false
phot_g_n_obs = 424
phot_g_mean_flux = 1231114.5199953588
phot_g_mean_flux_error = 304.7174
phot_g_mean_flux_over_error = 4040.1843
phot_g_mean_mag = 10.46162
phot_bp_n_obs = 48
phot_bp_mean_flux = 340092.32816732954
phot_bp_mean_flux_error = 183.52551
phot_bp_mean_flux_over_error = 1853.1066
phot_bp_mean_mag = 11.50955
phot_rp_n_obs = 48
phot_rp_mean_flux = 1327598.0610842404
phot_rp_mean_flux_error = 453.35495
phot_rp_mean_flux_over_error = 2928.3855
phot_rp_mean_mag = 9.440229
phot_bp_rp_excess_factor = 1.3546184
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 = 2.0693207
bp_g = 1.0479298
g_rp = 1.0213909
radial_velocity = -28.570196
radial_velocity_error = 0.19159284
rv_method_used = 1
rv_nb_transits = 15
rv_nb_deblended_transits = 2
rv_visibility_periods_used = 11
rv_expected_sig_to_noise = 115.67294
rv_renormalised_gof = -1.4793348
rv_chisq_pvalue = 0.5854393
rv_time_duration = 566.40845
rv_amplitude_robust = 1.8181381
rv_template_teff = 3800.0
rv_template_logg = 4.5
rv_template_fe_h = 0.0
rv_atm_param_origin = 440
vbroad = 6.3353424
vbroad_error = 2.1629705
vbroad_nb_transits = 10
grvs_mag = 8.97673
grvs_mag_error = 0.0074101193
grvs_mag_nb_transits = 10
phot_variable_flag = NOT_AVAILABLE
l = 54.90664585217601
b = -20.234473570209435
ecl_lon = 316.2910590964459
ecl_lat = 25.97679296554101
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 = 1.0202512e-11
classprob_dsc_combmod_galaxy = 5.0961034e-11
classprob_dsc_combmod_star = 1.0000273e-06

Star B

solution_id = 1636148068921376768
designation = Gaia DR3 1750816651978245248
source_id = 1750816651978245248
random_index = 577422026.0
ref_epoch = 2016.0
ra = 311.1277809865081
ra_error = 0.04196496
dec = 8.907529916881728
dec_error = 0.02512175
parallax = 40.35333657737049
parallax_error = 0.055169277
parallax_over_error = 731.4458
pm = 230.25815
pmra = 208.52652579151945
pmra_error = 0.05796406
pmdec = 97.64989281151513
pmdec_error = 0.04546938
ra_dec_corr = 0.18962279
ra_parallax_corr = 0.39313036
ra_pmra_corr = -0.22774898
ra_pmdec_corr = -0.09435397
dec_parallax_corr = 0.14725271
dec_pmra_corr = -0.056835286
dec_pmdec_corr = -0.34584472
parallax_pmra_corr = -0.22970171
parallax_pmdec_corr = -0.0697773
pmra_pmdec_corr = -0.051729407
astrometric_n_obs_al = 391
astrometric_n_obs_ac = 391
astrometric_n_good_obs_al = 389
astrometric_n_bad_obs_al = 2
astrometric_gof_al = 23.31985
astrometric_chi2_al = 7588.701
astrometric_excess_noise = 0.37091562
astrometric_excess_noise_sig = 209.2399
astrometric_params_solved = 31
astrometric_primary_flag = false
nu_eff_used_in_astrometry = 1.2741319
astrometric_matched_transits = 44
visibility_periods_used = 17
astrometric_sigma5d_max = 0.08175101
matched_transits = 47
new_matched_transits = 12
matched_transits_removed = 0
ipd_gof_harmonic_amplitude = 0.01058293
ipd_gof_harmonic_phase = 174.45087
ipd_frac_multi_peak = 0
ipd_frac_odd_win = 0
ruwe = 1.9492071
duplicated_source = false
phot_g_n_obs = 396
phot_g_mean_flux = 527894.8978903478
phot_g_mean_flux_error = 301.19547
phot_g_mean_flux_over_error = 1752.6655
phot_g_mean_mag = 11.380999
phot_bp_n_obs = 47
phot_bp_mean_flux = 101952.0153253752
phot_bp_mean_flux_error = 173.88243
phot_bp_mean_flux_over_error = 586.3273
phot_bp_mean_mag = 12.817553
phot_rp_n_obs = 47
phot_rp_mean_flux = 660438.9654549316
phot_rp_mean_flux_error = 502.26428
phot_rp_mean_flux_over_error = 1314.9232
phot_rp_mean_mag = 10.198314
phot_bp_rp_excess_factor = 1.4442098
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 = 2.6192389
bp_g = 1.436554
g_rp = 1.1826849
phot_variable_flag = NOT_AVAILABLE
l = 54.90958934499874
b = -20.231318994027646
ecl_lon = 316.2911784524193
ecl_lat = 25.980984352939455
in_qso_candidates = false
in_galaxy_candidates = false
non_single_star = 1
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

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 22:26:07 +0100