Double Star Calculator - Orbit

Orbital Elements for COU1962

WDS:	COU1962	WDS ID/Discoverer
P:	20.465	Orbital period (years)
a:	0.199	Semi-major axis (arcseconds)
i:	75.4	Inclination (degrees)
Ω:	116.0	Longitude of ascending node (degrees)
T:	1999.128	Epoch of periastron passage (year)
e:	0.516	Eccentricity
ω:	307.1	Longitude of periastron (degrees)
Start-Year:	2014.7675	Year
End-Year:	2035.2325	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1962
Position:	203107.72+333233.6	Epoch-2000 right ascension and declination
WDS-ID:	20311+3333	WDS designation
Discoverer Code:	COU1962	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	101227	Hipparcos catalog number
V1:	9.03	Magnitude of the primary
V2:	9.51	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2021c	Reference

Double Star Orbit for COU1962

WDS 6th Orbit including measures of COU1962

-- 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 COU1962

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.096   250.86
--------------------------
2014.77    0.234   293.10
2014.87    0.232   293.38
2014.97    0.230   293.66
2015.07    0.228   293.95
2015.17    0.226   294.24
2015.27    0.224   294.54
2015.37    0.222   294.84
2015.47    0.219   295.15
2015.57    0.217   295.47
2015.67    0.214   295.79
2015.77    0.211   296.12
2015.87    0.208   296.47
2015.97    0.205   296.82
2016.07    0.201   297.19
2016.17    0.198   297.57
2016.27    0.194   297.96
2016.37    0.190   298.37
2016.47    0.186   298.79
2016.57    0.181   299.24
2016.67    0.177   299.71
2016.77    0.172   300.20
2016.87    0.167   300.72
2016.97    0.162   301.28
2017.07    0.157   301.87
2017.17    0.151   302.51
2017.27    0.145   303.19
2017.37    0.139   303.93
2017.47    0.133   304.75
2017.57    0.126   305.64
2017.67    0.120   306.64
2017.77    0.113   307.75
2017.87    0.105   309.02
2017.97    0.098   310.48
2018.07    0.090   312.19
2018.17    0.082   314.22
2018.27    0.074   316.69
2018.37    0.066   319.77
2018.47    0.058   323.73
2018.57    0.050   329.00
2018.67    0.042   336.27
2018.77    0.035   346.66
2018.87    0.029     1.61
2018.97    0.026    21.59
2019.07    0.027    43.46
2019.17    0.031    62.07
2019.27    0.037    75.55
2019.37    0.044    84.93
2019.47    0.052    91.59
2019.57    0.059    96.51
2019.67    0.067   100.30
2019.77    0.074   103.33
2019.87    0.081   105.83
2019.97    0.087   107.96
2020.07    0.093   109.80
2020.17    0.098   111.45
2020.27    0.103   112.93
2020.37    0.107   114.30
2020.47    0.110   115.57
2020.57    0.113   116.78
2020.67    0.115   117.93
2020.77    0.117   119.04
2020.87    0.119   120.12
2020.97    0.120   121.18
2021.07    0.120   122.22
2021.17    0.120   123.26
2021.27    0.120   124.30
2021.37    0.120   125.35
2021.47    0.119   126.41
2021.57    0.118   127.48
2021.67    0.117   128.57
2021.77    0.115   129.69
2021.87    0.114   130.84
2021.97    0.112   132.02
2022.07    0.110   133.25
2022.17    0.108   134.52
2022.27    0.106   135.83
2022.37    0.103   137.21
2022.47    0.101   138.64
2022.57    0.099   140.15
2022.67    0.096   141.73
2022.77    0.094   143.39
2022.87    0.091   145.14
2022.97    0.089   146.99
2023.07    0.086   148.95
2023.17    0.084   151.02
2023.27    0.082   153.21
2023.37    0.079   155.53
2023.47    0.077   157.99
2023.57    0.075   160.60
2023.67    0.073   163.36
2023.77    0.071   166.28
2023.87    0.069   169.36
2023.97    0.067   172.59
2024.07    0.066   175.97
2024.17    0.065   179.49
2024.27    0.064   183.14
2024.37    0.063   186.90
2024.47    0.062   190.74
2024.57    0.062   194.64
2024.67    0.062   198.56
2024.77    0.062   202.47
2024.87    0.063   206.34
2024.97    0.063   210.14
2025.07    0.064   213.84
2025.17    0.065   217.42
2025.27    0.067   220.86
2025.37    0.068   224.15
2025.47    0.070   227.28
2025.57    0.072   230.26
2025.67    0.074   233.06
2025.77    0.076   235.71
2025.87    0.079   238.21
2025.97    0.081   240.55
2026.07    0.084   242.76
2026.17    0.087   244.83
2026.27    0.089   246.77
2026.37    0.092   248.60
2026.47    0.095   250.32
2026.57    0.098   251.94
2026.67    0.101   253.46
2026.77    0.104   254.90
2026.87    0.107   256.26
2026.97    0.110   257.54
2027.07    0.113   258.75
2027.17    0.116   259.90
2027.27    0.119   260.99
2027.37    0.122   262.03
2027.47    0.125   263.01
2027.57    0.128   263.95
2027.67    0.131   264.85
2027.77    0.134   265.70
2027.87    0.137   266.51
2027.97    0.140   267.30
2028.07    0.143   268.04
2028.17    0.146   268.76
2028.27    0.149   269.45
2028.37    0.152   270.11
2028.47    0.155   270.75
2028.57    0.158   271.36
2028.67    0.161   271.95
2028.77    0.164   272.52
2028.87    0.167   273.07
2028.97    0.169   273.61
2029.07    0.172   274.12
2029.17    0.175   274.62
2029.27    0.178   275.11
2029.37    0.180   275.58
2029.47    0.183   276.03
2029.57    0.185   276.48
2029.67    0.188   276.91
2029.77    0.190   277.33
2029.87    0.193   277.74
2029.97    0.195   278.14
2030.07    0.198   278.53
2030.17    0.200   278.91
2030.27    0.202   279.28
2030.37    0.204   279.64
2030.47    0.207   280.00
2030.57    0.209   280.35
2030.67    0.211   280.69
2030.77    0.213   281.03
2030.87    0.215   281.35
2030.97    0.217   281.68
2031.07    0.219   281.99
2031.17    0.220   282.31
2031.27    0.222   282.61
2031.37    0.224   282.92
2031.47    0.226   283.21
2031.57    0.227   283.51
2031.67    0.229   283.80
2031.77    0.230   284.08
2031.87    0.232   284.37
2031.97    0.233   284.64
2032.07    0.234   284.92
2032.17    0.235   285.19
2032.27    0.237   285.46
2032.37    0.238   285.73
2032.47    0.239   286.00
2032.57    0.240   286.26
2032.67    0.240   286.52
2032.77    0.241   286.78
2032.87    0.242   287.04
2032.97    0.243   287.29
2033.07    0.243   287.55
2033.17    0.244   287.80
2033.27    0.244   288.05
2033.37    0.244   288.31
2033.47    0.245   288.56
2033.57    0.245   288.81
2033.67    0.245   289.06
2033.77    0.245   289.31
2033.87    0.245   289.56
2033.97    0.245   289.81
2034.07    0.244   290.06
2034.17    0.244   290.32
2034.27    0.244   290.57
2034.37    0.243   290.82
2034.47    0.242   291.08
2034.57    0.242   291.34
2034.67    0.241   291.59
2034.77    0.240   291.86
2034.87    0.239   292.12
2034.97    0.237   292.38
2035.07    0.236   292.65
2035.17    0.235   292.92

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 18:15:54