Double Star Calculator - Orbit

Orbital Elements for WSI80

WDS:	WSI80	WDS ID/Discoverer
P:	22.390	Orbital period (years)
a:	0.4015	Semi-major axis (arcseconds)
i:	108.4	Inclination (degrees)
Ω:	86.6	Longitude of ascending node (degrees)
T:	2020.520	Epoch of periastron passage (year)
e:	0.791	Eccentricity
ω:	109.2	Longitude of periastron (degrees)
Start-Year:	2013.805	Year
End-Year:	2036.195	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI80
Position:	145808.79-485146.8	Epoch-2000 right ascension and declination
WDS-ID:	14581-4852	WDS designation
Discoverer Code:	WSI80	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	131923	HD catalog number
Hipparcos number:	73241	Hipparcos catalog number
V1:	6.4	Magnitude of the primary
V2:	10.7	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2020e	Reference

Double Star Orbit for WSI80

WDS 6th Orbit including measures of WSI80

-- 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 WSI80

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.192   172.39
--------------------------
2013.81    0.395   111.62
2013.90    0.395   111.30
2014.00    0.396   110.98
2014.10    0.396   110.66
2014.20    0.396   110.34
2014.30    0.397   110.02
2014.40    0.397   109.71
2014.50    0.397   109.39
2014.60    0.397   109.07
2014.70    0.397   108.75
2014.80    0.397   108.44
2014.90    0.397   108.12
2015.00    0.397   107.80
2015.10    0.396   107.48
2015.20    0.396   107.16
2015.30    0.396   106.84
2015.40    0.395   106.52
2015.50    0.394   106.20
2015.60    0.393   105.88
2015.70    0.392   105.56
2015.80    0.391   105.23
2015.90    0.390   104.90
2016.00    0.389   104.57
2016.10    0.388   104.24
2016.20    0.386   103.91
2016.30    0.385   103.57
2016.40    0.383   103.23
2016.50    0.381   102.89
2016.60    0.379   102.54
2016.70    0.377   102.19
2016.80    0.374   101.83
2016.90    0.372   101.47
2017.00    0.369   101.11
2017.10    0.366   100.74
2017.20    0.363   100.36
2017.30    0.360    99.98
2017.40    0.357    99.59
2017.50    0.353    99.19
2017.60    0.349    98.79
2017.70    0.345    98.37
2017.80    0.341    97.95
2017.90    0.336    97.51
2018.00    0.331    97.06
2018.10    0.326    96.60
2018.20    0.321    96.12
2018.30    0.315    95.62
2018.40    0.309    95.10
2018.50    0.302    94.57
2018.60    0.295    94.01
2018.70    0.288    93.42
2018.80    0.280    92.79
2018.90    0.271    92.13
2019.00    0.262    91.43
2019.10    0.253    90.68
2019.20    0.242    89.86
2019.30    0.231    88.97
2019.40    0.219    87.98
2019.50    0.206    86.87
2019.60    0.192    85.61
2019.70    0.177    84.14
2019.80    0.160    82.37
2019.90    0.142    80.17
2020.00    0.121    77.25
2020.10    0.099    73.08
2020.20    0.074    66.28
2020.30    0.049    52.48
2020.40    0.029    14.91
2020.50    0.034   314.68
2020.60    0.057   288.57
2020.70    0.080   277.74
2020.80    0.100   271.58
2020.90    0.116   267.32
2021.00    0.129   264.01
2021.10    0.140   261.24
2021.20    0.148   258.82
2021.30    0.154   256.63
2021.40    0.160   254.60
2021.50    0.164   252.69
2021.60    0.167   250.86
2021.70    0.170   249.10
2021.80    0.172   247.39
2021.90    0.174   245.72
2022.00    0.175   244.07
2022.10    0.176   242.44
2022.20    0.177   240.83
2022.30    0.177   239.23
2022.40    0.177   237.64
2022.50    0.177   236.05
2022.60    0.177   234.46
2022.70    0.177   232.86
2022.80    0.177   231.27
2022.90    0.177   229.67
2023.00    0.176   228.06
2023.10    0.176   226.45
2023.20    0.176   224.83
2023.30    0.175   223.20
2023.40    0.175   221.57
2023.50    0.174   219.93
2023.60    0.174   218.28
2023.70    0.174   216.62
2023.80    0.173   214.96
2023.90    0.173   213.30
2024.00    0.173   211.63
2024.10    0.173   209.96
2024.20    0.173   208.28
2024.30    0.173   206.61
2024.40    0.173   204.93
2024.50    0.173   203.26
2024.60    0.173   201.59
2024.70    0.174   199.93
2024.80    0.174   198.27
2024.90    0.174   196.62
2025.00    0.175   194.98
2025.10    0.176   193.35
2025.20    0.176   191.73
2025.30    0.177   190.12
2025.40    0.178   188.53
2025.50    0.179   186.96
2025.60    0.180   185.40
2025.70    0.181   183.87
2025.80    0.182   182.35
2025.90    0.183   180.85
2026.00    0.185   179.37
2026.10    0.186   177.92
2026.20    0.188   176.48
2026.30    0.189   175.07
2026.40    0.191   173.69
2026.50    0.192   172.32
2026.60    0.194   170.98
2026.70    0.196   169.67
2026.80    0.198   168.38
2026.90    0.200   167.11
2027.00    0.202   165.87
2027.10    0.204   164.66
2027.20    0.206   163.46
2027.30    0.208   162.30
2027.40    0.210   161.15
2027.50    0.212   160.03
2027.60    0.215   158.93
2027.70    0.217   157.86
2027.80    0.219   156.81
2027.90    0.222   155.78
2028.00    0.224   154.77
2028.10    0.226   153.78
2028.20    0.229   152.82
2028.30    0.231   151.87
2028.40    0.234   150.95
2028.50    0.236   150.04
2028.60    0.239   149.16
2028.70    0.242   148.29
2028.80    0.244   147.44
2028.90    0.247   146.61
2029.00    0.249   145.79
2029.10    0.252   145.00
2029.20    0.254   144.22
2029.30    0.257   143.45
2029.40    0.260   142.70
2029.50    0.262   141.97
2029.60    0.265   141.25
2029.70    0.268   140.54
2029.80    0.270   139.85
2029.90    0.273   139.17
2030.00    0.276   138.50
2030.10    0.278   137.85
2030.20    0.281   137.21
2030.30    0.283   136.58
2030.40    0.286   135.96
2030.50    0.289   135.36
2030.60    0.291   134.76
2030.70    0.294   134.18
2030.80    0.296   133.60
2030.90    0.299   133.04
2031.00    0.301   132.48
2031.10    0.304   131.94
2031.20    0.307   131.40
2031.30    0.309   130.87
2031.40    0.312   130.35
2031.50    0.314   129.84
2031.60    0.316   129.33
2031.70    0.319   128.84
2031.80    0.321   128.35
2031.90    0.324   127.87
2032.00    0.326   127.40
2032.10    0.328   126.93
2032.20    0.331   126.47
2032.30    0.333   126.01
2032.40    0.335   125.57
2032.50    0.338   125.12
2032.60    0.340   124.69
2032.70    0.342   124.26
2032.80    0.344   123.83
2032.90    0.346   123.41
2033.00    0.348   123.00
2033.10    0.351   122.59
2033.20    0.353   122.18
2033.30    0.355   121.78
2033.40    0.357   121.39
2033.50    0.359   120.99
2033.60    0.360   120.61
2033.70    0.362   120.22
2033.80    0.364   119.84
2033.90    0.366   119.47
2034.00    0.368   119.10
2034.10    0.369   118.73
2034.20    0.371   118.36
2034.30    0.373   118.00
2034.40    0.374   117.64
2034.50    0.376   117.29
2034.60    0.377   116.93
2034.70    0.379   116.58
2034.80    0.380   116.24
2034.90    0.382   115.89
2035.00    0.383   115.55
2035.10    0.384   115.21
2035.20    0.385   114.87
2035.30    0.387   114.53
2035.40    0.388   114.20
2035.50    0.389   113.87
2035.60    0.390   113.54
2035.70    0.391   113.21
2035.80    0.392   112.88
2035.90    0.392   112.56
2036.00    0.393   112.23
2036.10    0.394   111.91

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 17:11:14