Double Star Calculator - Orbit

Orbital Elements for COU1212

WDS:	COU1212	WDS ID/Discoverer
P:	110.000	Orbital period (years)
a:	0.59	Semi-major axis (arcseconds)
i:	101.0	Inclination (degrees)
Ω:	125.0	Longitude of ascending node (degrees)
T:	1998.510	Epoch of periastron passage (year)
e:	0.55	Eccentricity
ω:	73.8	Longitude of periastron (degrees)
Start-Year:	1970.0	Year
End-Year:	2080.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1212
Position:	011028.86+391643.6	Epoch-2000 right ascension and declination
WDS-ID:	01105+3917	WDS designation
Discoverer Code:	COU1212	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.5	Magnitude of the primary
V2:	10.2	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Cou1999b	Reference

Double Star Orbit for COU1212

WDS 6th Orbit including measures of COU1212

-- 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 COU1212

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.591   296.32
--------------------------
1970.00    0.271   155.34
1971.00    0.284   152.98
1972.00    0.297   150.83
1973.00    0.310   148.85
1974.00    0.322   147.03
1975.00    0.334   145.35
1976.00    0.346   143.78
1977.00    0.357   142.31
1978.00    0.368   140.93
1979.00    0.378   139.63
1980.00    0.387   138.39
1981.00    0.395   137.20
1982.00    0.402   136.06
1983.00    0.407   134.95
1984.00    0.411   133.86
1985.00    0.413   132.79
1986.00    0.413   131.73
1987.00    0.411   130.66
1988.00    0.406   129.58
1989.00    0.398   128.46
1990.00    0.387   127.28
1991.00    0.371   126.02
1992.00    0.351   124.63
1993.00    0.326   123.05
1994.00    0.295   121.16
1995.00    0.258   118.78
1996.00    0.214   115.51
1997.00    0.166   110.43
1998.00    0.114   100.87
1999.00    0.067    76.54
2000.00    0.054    16.62
2001.00    0.094   338.39
2002.00    0.146   325.00
2003.00    0.198   318.70
2004.00    0.247   314.99
2005.00    0.292   312.47
2006.00    0.333   310.60
2007.00    0.370   309.13
2008.00    0.403   307.91
2009.00    0.433   306.87
2010.00    0.459   305.96
2011.00    0.482   305.14
2012.00    0.503   304.39
2013.00    0.521   303.70
2014.00    0.536   303.05
2015.00    0.549   302.43
2016.00    0.561   301.85
2017.00    0.570   301.28
2018.00    0.578   300.73
2019.00    0.584   300.19
2020.00    0.589   299.66
2021.00    0.593   299.14
2022.00    0.595   298.63
2023.00    0.596   298.12
2024.00    0.596   297.61
2025.00    0.594   297.09
2026.00    0.592   296.58
2027.00    0.589   296.06
2028.00    0.585   295.53
2029.00    0.580   295.00
2030.00    0.575   294.45
2031.00    0.568   293.90
2032.00    0.561   293.33
2033.00    0.554   292.74
2034.00    0.545   292.14
2035.00    0.537   291.52
2036.00    0.527   290.88
2037.00    0.517   290.21
2038.00    0.507   289.52
2039.00    0.496   288.80
2040.00    0.485   288.05
2041.00    0.473   287.25
2042.00    0.461   286.42
2043.00    0.449   285.54
2044.00    0.436   284.62
2045.00    0.423   283.63
2046.00    0.410   282.58
2047.00    0.396   281.46
2048.00    0.382   280.27
2049.00    0.369   278.98
2050.00    0.355   277.59
2051.00    0.341   276.09
2052.00    0.327   274.45
2053.00    0.312   272.68
2054.00    0.298   270.73
2055.00    0.284   268.59
2056.00    0.271   266.23
2057.00    0.257   263.62
2058.00    0.244   260.73
2059.00    0.232   257.52
2060.00    0.219   253.94
2061.00    0.208   249.97
2062.00    0.198   245.56
2063.00    0.189   240.69
2064.00    0.181   235.35
2065.00    0.174   229.58
2066.00    0.170   223.43
2067.00    0.167   217.01
2068.00    0.166   210.44
2069.00    0.167   203.90
2070.00    0.170   197.52
2071.00    0.176   191.44
2072.00    0.182   185.76
2073.00    0.190   180.52
2074.00    0.200   175.74
2075.00    0.210   171.40
2076.00    0.221   167.50
2077.00    0.233   163.98
2078.00    0.245   160.80
2079.00    0.258   157.94

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 14:48:10