Double Star Calculator - Orbit

Orbital Elements for HDS1902
WDS: HDS1902 WDS ID/Discoverer
P: 26.150 Orbital period (years)
a: 0.131 Semi-major axis (arcseconds)
i: 27.7 Inclination (degrees)
Ω: 124.3 Longitude of ascending node (degrees)
T: 2008.550 Epoch of periastron passage (year)
e: 0.54 Eccentricity
ω: 309.0 Longitude of periastron (degrees)
Start-Year: 2011.925 Year
End-Year: 2038.075 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HDS1902
Position: 133325.91+091925.5 Epoch-2000 right ascension and declination
WDS-ID: 13334+0919 WDS designation
Discoverer Code: HDS1902 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 117913 HD catalog number
Hipparcos number: 66132 Hipparcos catalog number
V1: 9.51 Magnitude of the primary
V2: 11.49 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2020e Reference

Double Star Orbit for HDS1902



WDS 6th Orbit including measures of HDS1902

-- 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 HDS1902
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.177   281.51
--------------------------
2011.92    0.105   180.76
2012.02    0.106   182.33
2012.12    0.108   183.87
2012.22    0.109   185.37
2012.32    0.111   186.82
2012.42    0.112   188.25
2012.52    0.113   189.64
2012.62    0.115   190.99
2012.72    0.116   192.31
2012.82    0.117   193.61
2012.92    0.119   194.87
2013.02    0.120   196.11
2013.12    0.121   197.32
2013.22    0.123   198.50
2013.32    0.124   199.66
2013.42    0.125   200.79
2013.52    0.126   201.91
2013.62    0.128   203.00
2013.72    0.129   204.06
2013.82    0.130   205.11
2013.92    0.131   206.14
2014.02    0.133   207.15
2014.12    0.134   208.14
2014.22    0.135   209.12
2014.32    0.136   210.07
2014.42    0.137   211.01
2014.52    0.139   211.94
2014.62    0.140   212.85
2014.72    0.141   213.74
2014.82    0.142   214.62
2014.92    0.143   215.49
2015.02    0.144   216.34
2015.12    0.145   217.18
2015.22    0.146   218.01
2015.32    0.147   218.82
2015.42    0.149   219.63
2015.52    0.150   220.42
2015.62    0.151   221.20
2015.72    0.152   221.97
2015.82    0.153   222.74
2015.92    0.154   223.49
2016.02    0.155   224.23
2016.12    0.156   224.96
2016.22    0.157   225.68
2016.32    0.157   226.40
2016.42    0.158   227.10
2016.52    0.159   227.80
2016.62    0.160   228.49
2016.72    0.161   229.17
2016.82    0.162   229.85
2016.92    0.163   230.52
2017.02    0.164   231.18
2017.12    0.165   231.83
2017.22    0.165   232.48
2017.32    0.166   233.12
2017.42    0.167   233.75
2017.52    0.168   234.38
2017.62    0.169   235.00
2017.72    0.169   235.62
2017.82    0.170   236.23
2017.92    0.171   236.84
2018.02    0.172   237.44
2018.12    0.172   238.03
2018.22    0.173   238.63
2018.32    0.174   239.21
2018.42    0.174   239.79
2018.52    0.175   240.37
2018.62    0.176   240.94
2018.72    0.176   241.51
2018.82    0.177   242.08
2018.92    0.177   242.64
2019.02    0.178   243.20
2019.12    0.179   243.75
2019.22    0.179   244.30
2019.32    0.180   244.85
2019.42    0.180   245.39
2019.52    0.181   245.93
2019.62    0.181   246.47
2019.72    0.182   247.01
2019.82    0.182   247.54
2019.92    0.183   248.07
2020.02    0.183   248.59
2020.12    0.183   249.12
2020.22    0.184   249.64
2020.32    0.184   250.16
2020.42    0.185   250.68
2020.52    0.185   251.19
2020.62    0.185   251.71
2020.72    0.186   252.22
2020.82    0.186   252.73
2020.92    0.186   253.23
2021.02    0.187   253.74
2021.12    0.187   254.24
2021.22    0.187   254.75
2021.32    0.187   255.25
2021.42    0.188   255.75
2021.52    0.188   256.25
2021.62    0.188   256.75
2021.72    0.188   257.24
2021.82    0.188   257.74
2021.92    0.189   258.23
2022.02    0.189   258.73
2022.12    0.189   259.22
2022.22    0.189   259.72
2022.32    0.189   260.21
2022.42    0.189   260.70
2022.52    0.189   261.19
2022.62    0.189   261.68
2022.72    0.189   262.18
2022.82    0.189   262.67
2022.92    0.189   263.16
2023.02    0.189   263.65
2023.12    0.189   264.14
2023.22    0.189   264.63
2023.32    0.189   265.12
2023.42    0.189   265.62
2023.52    0.189   266.11
2023.62    0.189   266.60
2023.72    0.189   267.10
2023.82    0.188   267.59
2023.92    0.188   268.09
2024.02    0.188   268.59
2024.12    0.188   269.08
2024.22    0.188   269.58
2024.32    0.187   270.08
2024.42    0.187   270.59
2024.52    0.187   271.09
2024.62    0.187   271.59
2024.72    0.186   272.10
2024.82    0.186   272.61
2024.92    0.186   273.12
2025.02    0.185   273.63
2025.12    0.185   274.15
2025.22    0.184   274.66
2025.32    0.184   275.18
2025.42    0.183   275.70
2025.52    0.183   276.23
2025.62    0.182   276.76
2025.72    0.182   277.29
2025.82    0.181   277.82
2025.92    0.181   278.36
2026.02    0.180   278.90
2026.12    0.180   279.44
2026.22    0.179   279.99
2026.32    0.178   280.54
2026.42    0.178   281.09
2026.52    0.177   281.65
2026.62    0.176   282.22
2026.72    0.176   282.78
2026.82    0.175   283.36
2026.92    0.174   283.94
2027.02    0.173   284.52
2027.12    0.172   285.11
2027.22    0.172   285.70
2027.32    0.171   286.30
2027.42    0.170   286.91
2027.52    0.169   287.52
2027.62    0.168   288.14
2027.72    0.167   288.77
2027.82    0.166   289.41
2027.92    0.165   290.05
2028.02    0.164   290.70
2028.12    0.163   291.36
2028.22    0.162   292.02
2028.32    0.161   292.70
2028.42    0.160   293.39
2028.52    0.158   294.08
2028.62    0.157   294.79
2028.72    0.156   295.51
2028.82    0.155   296.24
2028.92    0.153   296.98
2029.02    0.152   297.73
2029.12    0.151   298.50
2029.22    0.149   299.28
2029.32    0.148   300.08
2029.42    0.147   300.89
2029.52    0.145   301.72
2029.62    0.144   302.56
2029.72    0.142   303.42
2029.82    0.141   304.31
2029.92    0.139   305.21
2030.02    0.137   306.13
2030.12    0.136   307.07
2030.22    0.134   308.04
2030.32    0.132   309.03
2030.42    0.131   310.05
2030.52    0.129   311.10
2030.62    0.127   312.18
2030.72    0.125   313.28
2030.82    0.123   314.43
2030.92    0.121   315.60
2031.02    0.119   316.82
2031.12    0.117   318.08
2031.22    0.115   319.38
2031.32    0.113   320.72
2031.42    0.111   322.12
2031.52    0.109   323.57
2031.62    0.107   325.08
2031.72    0.105   326.65
2031.82    0.103   328.29
2031.92    0.100   330.00
2032.02    0.098   331.79
2032.12    0.096   333.66
2032.22    0.093   335.63
2032.32    0.091   337.69
2032.42    0.089   339.87
2032.52    0.086   342.16
2032.62    0.084   344.58
2032.72    0.082   347.14
2032.82    0.079   349.85
2032.92    0.077   352.73
2033.02    0.075   355.78
2033.12    0.073   359.02
2033.22    0.070     2.47
2033.32    0.068     6.13
2033.42    0.066    10.03
2033.52    0.064    14.16
2033.62    0.063    18.54
2033.72    0.061    23.17
2033.82    0.059    28.04
2033.92    0.058    33.14
2034.02    0.057    38.45
2034.12    0.056    43.94
2034.22    0.056    49.57
2034.32    0.055    55.29
2034.42    0.055    61.06
2034.52    0.055    66.82
2034.62    0.056    72.53
2034.72    0.056    78.14
2034.82    0.057    83.60
2034.92    0.058    88.91
2035.02    0.059    94.02
2035.12    0.060    98.94
2035.22    0.062   103.66
2035.32    0.063   108.17
2035.42    0.065   112.48
2035.52    0.066   116.60
2035.62    0.068   120.53
2035.72    0.069   124.28
2035.82    0.071   127.87
2035.92    0.072   131.30
2036.02    0.074   134.59
2036.12    0.076   137.74
2036.22    0.077   140.76
2036.32    0.079   143.65
2036.42    0.080   146.44
2036.52    0.082   149.12
2036.62    0.083   151.69
2036.72    0.085   154.18
2036.82    0.087   156.57
2036.92    0.088   158.88
2037.02    0.090   161.12
2037.12    0.091   163.28
2037.22    0.093   165.37
2037.32    0.094   167.39
2037.42    0.096   169.35
2037.52    0.097   171.25
2037.62    0.098   173.09
2037.72    0.100   174.88
2037.82    0.101   176.62
2037.92    0.103   178.31
2038.02    0.104   179.95






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 16:57:29



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