Double Star Calculator - Orbit

Orbital Elements for HDS2399
WDS: HDS2399 WDS ID/Discoverer
P: 45.379 Orbital period (years)
a: 0.384 Semi-major axis (arcseconds)
i: 29.6 Inclination (degrees)
Ω: 14.1 Longitude of ascending node (degrees)
T: 2018.800 Epoch of periastron passage (year)
e: 0.83 Eccentricity
ω: 100.7 Longitude of periastron (degrees)
Start-Year: 2002.3105 Year
End-Year: 2047.6895 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS2399
Position: 165746.09+131729.2 Epoch-2000 right ascension and declination
WDS-ID: 16578+1317 WDS designation
Discoverer Code: HDS2399 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 83010 Hipparcos catalog number
V1: 10.90 Magnitude of the primary
V2: 13.09 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2018e Reference

Double Star Orbit for HDS2399



WDS 6th Orbit including measures of HDS2399

-- 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 HDS2399
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.418   267.11
--------------------------
2002.31    0.590   305.90
2002.41    0.589   306.07
2002.51    0.588   306.23
2002.61    0.587   306.40
2002.71    0.586   306.56
2002.81    0.585   306.73
2002.91    0.584   306.89
2003.01    0.583   307.06
2003.11    0.582   307.22
2003.21    0.581   307.39
2003.31    0.580   307.56
2003.41    0.579   307.73
2003.51    0.578   307.90
2003.61    0.577   308.07
2003.71    0.576   308.24
2003.81    0.575   308.41
2003.91    0.574   308.58
2004.01    0.573   308.75
2004.11    0.571   308.93
2004.21    0.570   309.10
2004.31    0.569   309.28
2004.41    0.568   309.45
2004.51    0.566   309.63
2004.61    0.565   309.81
2004.71    0.564   309.98
2004.81    0.562   310.16
2004.91    0.561   310.34
2005.01    0.560   310.52
2005.11    0.558   310.71
2005.21    0.557   310.89
2005.31    0.556   311.07
2005.41    0.554   311.26
2005.51    0.553   311.44
2005.61    0.551   311.63
2005.71    0.550   311.81
2005.81    0.548   312.00
2005.91    0.547   312.19
2006.01    0.545   312.38
2006.11    0.544   312.57
2006.21    0.542   312.77
2006.31    0.540   312.96
2006.41    0.539   313.15
2006.51    0.537   313.35
2006.61    0.535   313.55
2006.71    0.534   313.75
2006.81    0.532   313.95
2006.91    0.530   314.15
2007.01    0.529   314.35
2007.11    0.527   314.55
2007.21    0.525   314.76
2007.31    0.523   314.97
2007.41    0.521   315.17
2007.51    0.519   315.38
2007.61    0.518   315.59
2007.71    0.516   315.81
2007.81    0.514   316.02
2007.91    0.512   316.24
2008.01    0.510   316.45
2008.11    0.508   316.67
2008.21    0.506   316.89
2008.31    0.504   317.12
2008.41    0.502   317.34
2008.51    0.500   317.57
2008.61    0.497   317.80
2008.71    0.495   318.03
2008.81    0.493   318.26
2008.91    0.491   318.49
2009.01    0.489   318.73
2009.11    0.486   318.97
2009.21    0.484   319.21
2009.31    0.482   319.45
2009.41    0.480   319.70
2009.51    0.477   319.95
2009.61    0.475   320.20
2009.71    0.472   320.45
2009.81    0.470   320.70
2009.91    0.467   320.96
2010.01    0.465   321.22
2010.11    0.462   321.49
2010.21    0.460   321.75
2010.31    0.457   322.02
2010.41    0.455   322.30
2010.51    0.452   322.57
2010.61    0.449   322.85
2010.71    0.447   323.13
2010.81    0.444   323.42
2010.91    0.441   323.71
2011.01    0.439   324.00
2011.11    0.436   324.30
2011.21    0.433   324.60
2011.31    0.430   324.91
2011.41    0.427   325.21
2011.51    0.424   325.53
2011.61    0.421   325.85
2011.71    0.418   326.17
2011.81    0.415   326.49
2011.91    0.412   326.83
2012.01    0.409   327.16
2012.11    0.406   327.51
2012.21    0.402   327.85
2012.31    0.399   328.21
2012.41    0.396   328.56
2012.51    0.393   328.93
2012.61    0.389   329.30
2012.71    0.386   329.68
2012.81    0.382   330.06
2012.91    0.379   330.45
2013.01    0.375   330.85
2013.11    0.372   331.26
2013.21    0.368   331.67
2013.31    0.365   332.10
2013.41    0.361   332.53
2013.51    0.357   332.97
2013.61    0.353   333.42
2013.71    0.350   333.88
2013.81    0.346   334.34
2013.91    0.342   334.82
2014.01    0.338   335.32
2014.11    0.334   335.82
2014.21    0.330   336.34
2014.31    0.325   336.87
2014.41    0.321   337.41
2014.51    0.317   337.97
2014.61    0.312   338.54
2014.71    0.308   339.13
2014.81    0.304   339.73
2014.91    0.299   340.36
2015.01    0.294   341.00
2015.11    0.290   341.67
2015.21    0.285   342.36
2015.31    0.280   343.07
2015.41    0.275   343.80
2015.51    0.270   344.56
2015.61    0.265   345.36
2015.71    0.260   346.18
2015.81    0.255   347.03
2015.91    0.249   347.93
2016.01    0.244   348.86
2016.11    0.238   349.83
2016.21    0.233   350.86
2016.31    0.227   351.93
2016.41    0.221   353.06
2016.51    0.215   354.25
2016.61    0.209   355.51
2016.71    0.203   356.84
2016.81    0.197   358.27
2016.91    0.190   359.79
2017.01    0.183     1.41
2017.11    0.177     3.16
2017.21    0.170     5.06
2017.31    0.162     7.12
2017.41    0.155     9.37
2017.51    0.148    11.85
2017.61    0.140    14.59
2017.71    0.132    17.66
2017.81    0.124    21.13
2017.91    0.116    25.09
2018.01    0.107    29.67
2018.11    0.099    35.04
2018.21    0.090    41.44
2018.31    0.082    49.17
2018.41    0.074    58.64
2018.51    0.066    70.30
2018.61    0.061    84.43
2018.71    0.058   100.78
2018.81    0.057   118.19
2018.91    0.060   134.90
2019.01    0.065   149.62
2019.11    0.071   161.92
2019.21    0.079   172.04
2019.31    0.086   180.38
2019.41    0.094   187.33
2019.51    0.102   193.21
2019.61    0.110   198.26
2019.71    0.118   202.65
2019.81    0.125   206.51
2019.91    0.132   209.95
2020.01    0.139   213.03
2020.11    0.146   215.82
2020.21    0.153   218.36
2020.31    0.159   220.69
2020.41    0.166   222.84
2020.51    0.172   224.83
2020.61    0.178   226.68
2020.71    0.184   228.41
2020.81    0.190   230.03
2020.91    0.196   231.55
2021.01    0.202   232.99
2021.11    0.207   234.35
2021.21    0.213   235.64
2021.31    0.218   236.86
2021.41    0.223   238.03
2021.51    0.228   239.14
2021.61    0.234   240.20
2021.71    0.239   241.22
2021.81    0.244   242.20
2021.91    0.248   243.14
2022.01    0.253   244.04
2022.11    0.258   244.91
2022.21    0.263   245.74
2022.31    0.267   246.55
2022.41    0.272   247.33
2022.51    0.276   248.09
2022.61    0.281   248.82
2022.71    0.285   249.53
2022.81    0.289   250.22
2022.91    0.294   250.88
2023.01    0.298   251.53
2023.11    0.302   252.16
2023.21    0.306   252.78
2023.31    0.310   253.38
2023.41    0.314   253.96
2023.51    0.318   254.53
2023.61    0.322   255.08
2023.71    0.326   255.62
2023.81    0.330   256.15
2023.91    0.333   256.67
2024.01    0.337   257.17
2024.11    0.341   257.67
2024.21    0.344   258.15
2024.31    0.348   258.62
2024.41    0.351   259.09
2024.51    0.355   259.54
2024.61    0.358   259.99
2024.71    0.362   260.42
2024.81    0.365   260.85
2024.91    0.369   261.27
2025.01    0.372   261.69
2025.11    0.375   262.09
2025.21    0.379   262.49
2025.31    0.382   262.89
2025.41    0.385   263.27
2025.51    0.388   263.65
2025.61    0.391   264.03
2025.71    0.394   264.39
2025.81    0.397   264.76
2025.91    0.400   265.11
2026.01    0.403   265.46
2026.11    0.406   265.81
2026.21    0.409   266.15
2026.31    0.412   266.49
2026.41    0.415   266.82
2026.51    0.418   267.14
2026.61    0.421   267.47
2026.71    0.424   267.79
2026.81    0.426   268.10
2026.91    0.429   268.41
2027.01    0.432   268.72
2027.11    0.434   269.02
2027.21    0.437   269.32
2027.31    0.440   269.61
2027.41    0.442   269.90
2027.51    0.445   270.19
2027.61    0.447   270.48
2027.71    0.450   270.76
2027.81    0.452   271.04
2027.91    0.455   271.31
2028.01    0.457   271.59
2028.11    0.460   271.86
2028.21    0.462   272.12
2028.31    0.465   272.39
2028.41    0.467   272.65
2028.51    0.469   272.91
2028.61    0.472   273.16
2028.71    0.474   273.42
2028.81    0.476   273.67
2028.91    0.478   273.92
2029.01    0.481   274.17
2029.11    0.483   274.41
2029.21    0.485   274.65
2029.31    0.487   274.89
2029.41    0.489   275.13
2029.51    0.491   275.37
2029.61    0.493   275.60
2029.71    0.495   275.83
2029.81    0.497   276.06
2029.91    0.500   276.29
2030.01    0.502   276.52
2030.11    0.503   276.74
2030.21    0.505   276.96
2030.31    0.507   277.19
2030.41    0.509   277.41
2030.51    0.511   277.62
2030.61    0.513   277.84
2030.71    0.515   278.05
2030.81    0.517   278.27
2030.91    0.519   278.48
2031.01    0.520   278.69
2031.11    0.522   278.90
2031.21    0.524   279.11
2031.31    0.526   279.31
2031.41    0.527   279.52
2031.51    0.529   279.72
2031.61    0.531   279.92
2031.71    0.532   280.12
2031.81    0.534   280.32
2031.91    0.536   280.52
2032.01    0.537   280.72
2032.11    0.539   280.91
2032.21    0.540   281.11
2032.31    0.542   281.30
2032.41    0.544   281.49
2032.51    0.545   281.69
2032.61    0.547   281.88
2032.71    0.548   282.07
2032.81    0.549   282.25
2032.91    0.551   282.44
2033.01    0.552   282.63
2033.11    0.554   282.81
2033.21    0.555   283.00
2033.31    0.557   283.18
2033.41    0.558   283.36
2033.51    0.559   283.55
2033.61    0.561   283.73
2033.71    0.562   283.91
2033.81    0.563   284.09
2033.91    0.564   284.27
2034.01    0.566   284.44
2034.11    0.567   284.62
2034.21    0.568   284.80
2034.31    0.569   284.97
2034.41    0.570   285.15
2034.51    0.572   285.32
2034.61    0.573   285.49
2034.71    0.574   285.67
2034.81    0.575   285.84
2034.91    0.576   286.01
2035.01    0.577   286.18
2035.11    0.578   286.35
2035.21    0.579   286.52
2035.31    0.580   286.69
2035.41    0.581   286.86
2035.51    0.582   287.02
2035.61    0.583   287.19
2035.71    0.584   287.36
2035.81    0.585   287.52
2035.91    0.586   287.69
2036.01    0.587   287.85
2036.11    0.588   288.02
2036.21    0.589   288.18
2036.31    0.590   288.34
2036.41    0.591   288.51
2036.51    0.592   288.67
2036.61    0.592   288.83
2036.71    0.593   288.99
2036.81    0.594   289.15
2036.91    0.595   289.31
2037.01    0.596   289.47
2037.11    0.596   289.63
2037.21    0.597   289.79
2037.31    0.598   289.95
2037.41    0.599   290.11
2037.51    0.599   290.27
2037.61    0.600   290.43
2037.71    0.601   290.58
2037.81    0.601   290.74
2037.91    0.602   290.90
2038.01    0.602   291.05
2038.11    0.603   291.21
2038.21    0.604   291.37
2038.31    0.604   291.52
2038.41    0.605   291.68
2038.51    0.605   291.83
2038.61    0.606   291.99
2038.71    0.606   292.14
2038.81    0.607   292.30
2038.91    0.607   292.45
2039.01    0.608   292.60
2039.11    0.608   292.76
2039.21    0.609   292.91
2039.31    0.609   293.06
2039.41    0.609   293.22
2039.51    0.610   293.37
2039.61    0.610   293.52
2039.71    0.611   293.67
2039.81    0.611   293.83
2039.91    0.611   293.98
2040.01    0.612   294.13
2040.11    0.612   294.28
2040.21    0.612   294.43
2040.31    0.612   294.58
2040.41    0.613   294.73
2040.51    0.613   294.89
2040.61    0.613   295.04
2040.71    0.613   295.19
2040.81    0.613   295.34
2040.91    0.614   295.49
2041.01    0.614   295.64
2041.11    0.614   295.79
2041.21    0.614   295.94
2041.31    0.614   296.09
2041.41    0.614   296.24
2041.51    0.614   296.39
2041.61    0.614   296.54
2041.71    0.615   296.69
2041.81    0.615   296.84
2041.91    0.615   296.99
2042.01    0.615   297.14
2042.11    0.615   297.29
2042.21    0.615   297.44
2042.31    0.615   297.59
2042.41    0.615   297.74
2042.51    0.614   297.89
2042.61    0.614   298.04
2042.71    0.614   298.19
2042.81    0.614   298.35
2042.91    0.614   298.50
2043.01    0.614   298.65
2043.11    0.614   298.80
2043.21    0.614   298.95
2043.31    0.613   299.10
2043.41    0.613   299.25
2043.51    0.613   299.40
2043.61    0.613   299.55
2043.71    0.613   299.70
2043.81    0.612   299.85
2043.91    0.612   300.00
2044.01    0.612   300.16
2044.11    0.611   300.31
2044.21    0.611   300.46
2044.31    0.611   300.61
2044.41    0.610   300.76
2044.51    0.610   300.92
2044.61    0.610   301.07
2044.71    0.609   301.22
2044.81    0.609   301.37
2044.91    0.608   301.53
2045.01    0.608   301.68
2045.11    0.607   301.83
2045.21    0.607   301.99
2045.31    0.607   302.14
2045.41    0.606   302.30
2045.51    0.605   302.45
2045.61    0.605   302.61
2045.71    0.604   302.76
2045.81    0.604   302.92
2045.91    0.603   303.07
2046.01    0.603   303.23
2046.11    0.602   303.39
2046.21    0.601   303.54
2046.31    0.601   303.70
2046.41    0.600   303.86
2046.51    0.599   304.01
2046.61    0.599   304.17
2046.71    0.598   304.33
2046.81    0.597   304.49
2046.91    0.596   304.65
2047.01    0.596   304.81
2047.11    0.595   304.97
2047.21    0.594   305.13
2047.31    0.593   305.29
2047.41    0.592   305.45
2047.51    0.592   305.61
2047.61    0.591   305.78






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 17:32:30



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