Double Star Calculator - Orbit

Orbital Elements for HDS100AB
WDS: HDS100AB WDS ID/Discoverer
P: 29.400 Orbital period (years)
a: 0.1104 Semi-major axis (arcseconds)
i: 105.4 Inclination (degrees)
Ω: 31.4 Longitude of ascending node (degrees)
T: 2024.131 Epoch of periastron passage (year)
e: 0.751 Eccentricity
ω: 260.1 Longitude of periastron (degrees)
Start-Year: 2010.3 Year
End-Year: 2039.7 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS100AB
Position: 004557.30-304233.4 Epoch-2000 right ascension and declination
WDS-ID: 00460-3043 WDS designation
Discoverer Code: HDS100AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 4390 HD catalog number
Hipparcos number: 3592 Hipparcos catalog number
V1: 8.3 Magnitude of the primary
V2: 9.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2024 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2024e Reference

Double Star Orbit for HDS100AB



WDS 6th Orbit including measures of HDS100AB

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of HDS100AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.075    25.03
--------------------------
2010.30    0.057   328.09
2010.40    0.056   327.28
2010.50    0.056   326.45
2010.60    0.056   325.61
2010.70    0.055   324.76
2010.80    0.055   323.89
2010.90    0.055   323.02
2011.00    0.054   322.13
2011.10    0.054   321.24
2011.20    0.054   320.33
2011.30    0.053   319.41
2011.40    0.053   318.48
2011.50    0.053   317.54
2011.60    0.052   316.58
2011.70    0.052   315.62
2011.80    0.052   314.64
2011.90    0.051   313.66
2012.00    0.051   312.67
2012.10    0.051   311.66
2012.20    0.051   310.65
2012.30    0.050   309.62
2012.40    0.050   308.59
2012.50    0.050   307.55
2012.60    0.050   306.50
2012.70    0.050   305.44
2012.80    0.050   304.38
2012.90    0.049   303.31
2013.00    0.049   302.23
2013.10    0.049   301.15
2013.20    0.049   300.06
2013.30    0.049   298.97
2013.40    0.049   297.87
2013.50    0.049   296.77
2013.60    0.049   295.67
2013.70    0.049   294.56
2013.80    0.049   293.45
2013.90    0.049   292.34
2014.00    0.049   291.23
2014.10    0.049   290.12
2014.20    0.049   289.02
2014.30    0.049   287.91
2014.40    0.049   286.80
2014.50    0.049   285.70
2014.60    0.049   284.59
2014.70    0.049   283.50
2014.80    0.049   282.40
2014.90    0.049   281.31
2015.00    0.049   280.23
2015.10    0.049   279.15
2015.20    0.049   278.07
2015.30    0.050   277.01
2015.40    0.050   275.95
2015.50    0.050   274.89
2015.60    0.050   273.85
2015.70    0.050   272.81
2015.80    0.051   271.78
2015.90    0.051   270.76
2016.00    0.051   269.75
2016.10    0.051   268.75
2016.20    0.051   267.75
2016.30    0.052   266.77
2016.40    0.052   265.79
2016.50    0.052   264.83
2016.60    0.052   263.87
2016.70    0.053   262.93
2016.80    0.053   261.99
2016.90    0.053   261.07
2017.00    0.054   260.15
2017.10    0.054   259.25
2017.20    0.054   258.35
2017.30    0.055   257.47
2017.40    0.055   256.59
2017.50    0.055   255.73
2017.60    0.055   254.88
2017.70    0.056   254.03
2017.80    0.056   253.19
2017.90    0.056   252.37
2018.00    0.057   251.55
2018.10    0.057   250.74
2018.20    0.057   249.95
2018.30    0.058   249.16
2018.40    0.058   248.38
2018.50    0.058   247.60
2018.60    0.059   246.84
2018.70    0.059   246.08
2018.80    0.059   245.33
2018.90    0.060   244.59
2019.00    0.060   243.86
2019.10    0.060   243.13
2019.20    0.060   242.41
2019.30    0.061   241.70
2019.40    0.061   240.99
2019.50    0.061   240.29
2019.60    0.061   239.60
2019.70    0.062   238.91
2019.80    0.062   238.22
2019.90    0.062   237.54
2020.00    0.062   236.87
2020.10    0.062   236.19
2020.20    0.063   235.53
2020.30    0.063   234.86
2020.40    0.063   234.20
2020.50    0.063   233.54
2020.60    0.063   232.88
2020.70    0.063   232.22
2020.80    0.063   231.56
2020.90    0.063   230.90
2021.00    0.063   230.25
2021.10    0.063   229.59
2021.20    0.063   228.93
2021.30    0.063   228.26
2021.40    0.063   227.59
2021.50    0.062   226.92
2021.60    0.062   226.24
2021.70    0.062   225.56
2021.80    0.061   224.86
2021.90    0.061   224.16
2022.00    0.060   223.45
2022.10    0.060   222.72
2022.20    0.059   221.97
2022.30    0.058   221.21
2022.40    0.057   220.42
2022.50    0.056   219.61
2022.60    0.055   218.76
2022.70    0.054   217.88
2022.80    0.052   216.95
2022.90    0.051   215.97
2023.00    0.049   214.92
2023.10    0.047   213.78
2023.20    0.045   212.53
2023.30    0.042   211.15
2023.40    0.039   209.57
2023.50    0.036   207.73
2023.60    0.032   205.50
2023.70    0.028   202.68
2023.80    0.024   198.85
2023.90    0.019   193.19
2024.00    0.014   183.64
2024.10    0.010   164.47
2024.20    0.007   124.91
2024.30    0.009    83.47
2024.40    0.014    62.84
2024.50    0.019    52.77
2024.60    0.024    46.96
2024.70    0.029    43.13
2024.80    0.033    40.37
2024.90    0.037    38.24
2025.00    0.041    36.53
2025.10    0.045    35.11
2025.20    0.048    33.89
2025.30    0.051    32.82
2025.40    0.054    31.86
2025.50    0.056    31.00
2025.60    0.059    30.22
2025.70    0.061    29.49
2025.80    0.063    28.82
2025.90    0.065    28.19
2026.00    0.067    27.60
2026.10    0.069    27.04
2026.20    0.071    26.50
2026.30    0.072    25.99
2026.40    0.074    25.50
2026.50    0.075    25.03
2026.60    0.076    24.57
2026.70    0.078    24.13
2026.80    0.079    23.70
2026.90    0.080    23.29
2027.00    0.081    22.88
2027.10    0.082    22.49
2027.20    0.083    22.10
2027.30    0.084    21.72
2027.40    0.084    21.35
2027.50    0.085    20.99
2027.60    0.086    20.63
2027.70    0.086    20.27
2027.80    0.087    19.93
2027.90    0.088    19.58
2028.00    0.088    19.25
2028.10    0.089    18.91
2028.20    0.089    18.58
2028.30    0.090    18.25
2028.40    0.090    17.93
2028.50    0.090    17.61
2028.60    0.091    17.29
2028.70    0.091    16.97
2028.80    0.091    16.65
2028.90    0.091    16.34
2029.00    0.092    16.03
2029.10    0.092    15.72
2029.20    0.092    15.41
2029.30    0.092    15.10
2029.40    0.092    14.79
2029.50    0.092    14.49
2029.60    0.093    14.18
2029.70    0.093    13.88
2029.80    0.093    13.57
2029.90    0.093    13.27
2030.00    0.093    12.96
2030.10    0.093    12.66
2030.20    0.093    12.35
2030.30    0.093    12.05
2030.40    0.093    11.74
2030.50    0.093    11.44
2030.60    0.092    11.13
2030.70    0.092    10.83
2030.80    0.092    10.52
2030.90    0.092    10.21
2031.00    0.092     9.90
2031.10    0.092     9.59
2031.20    0.092     9.28
2031.30    0.091     8.97
2031.40    0.091     8.66
2031.50    0.091     8.34
2031.60    0.091     8.03
2031.70    0.091     7.71
2031.80    0.090     7.39
2031.90    0.090     7.07
2032.00    0.090     6.75
2032.10    0.090     6.42
2032.20    0.089     6.09
2032.30    0.089     5.77
2032.40    0.089     5.43
2032.50    0.088     5.10
2032.60    0.088     4.77
2032.70    0.088     4.43
2032.80    0.088     4.09
2032.90    0.087     3.75
2033.00    0.087     3.40
2033.10    0.087     3.05
2033.20    0.086     2.70
2033.30    0.086     2.35
2033.40    0.085     1.99
2033.50    0.085     1.63
2033.60    0.085     1.27
2033.70    0.084     0.90
2033.80    0.084     0.53
2033.90    0.083     0.15
2034.00    0.083   359.78
2034.10    0.083   359.40
2034.20    0.082   359.01
2034.30    0.082   358.62
2034.40    0.081   358.23
2034.50    0.081   357.83
2034.60    0.081   357.43
2034.70    0.080   357.02
2034.80    0.080   356.61
2034.90    0.079   356.20
2035.00    0.079   355.78
2035.10    0.078   355.35
2035.20    0.078   354.92
2035.30    0.077   354.49
2035.40    0.077   354.05
2035.50    0.076   353.60
2035.60    0.076   353.15
2035.70    0.075   352.69
2035.80    0.075   352.23
2035.90    0.075   351.76
2036.00    0.074   351.29
2036.10    0.074   350.81
2036.20    0.073   350.32
2036.30    0.073   349.83
2036.40    0.072   349.33
2036.50    0.072   348.82
2036.60    0.071   348.31
2036.70    0.071   347.79
2036.80    0.070   347.26
2036.90    0.070   346.72
2037.00    0.069   346.18
2037.10    0.069   345.63
2037.20    0.068   345.07
2037.30    0.068   344.50
2037.40    0.067   343.93
2037.50    0.067   343.35
2037.60    0.066   342.76
2037.70    0.066   342.16
2037.80    0.065   341.55
2037.90    0.065   340.93
2038.00    0.064   340.30
2038.10    0.064   339.66
2038.20    0.063   339.02
2038.30    0.063   338.36
2038.40    0.062   337.70
2038.50    0.062   337.02
2038.60    0.062   336.34
2038.70    0.061   335.64
2038.80    0.061   334.93
2038.90    0.060   334.22
2039.00    0.060   333.49
2039.10    0.059   332.75
2039.20    0.059   332.00
2039.30    0.058   331.24
2039.40    0.058   330.47
2039.50    0.058   329.69
2039.60    0.057   328.90
2039.70    0.057   328.09






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 - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 14:42:32



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