Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:11:58

Orbital Elements for COU966

WDS:	COU966	WDS ID/Discoverer
P:	90.430	Orbital period (years)
a:	0.126	Semi-major axis (arcseconds)
i:	172.4	Inclination (degrees)
Ω:	63.6	Longitude of ascending node (degrees)
T:	2036.130	Epoch of periastron passage (year)
e:	0.304	Eccentricity
ω:	183.0	Longitude of periastron (degrees)
Start-Year:	1980.0	Year
End-Year:	2070.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU966

Position:	123135.73+320122.5	Epoch-2000 right ascension and declination
WDS-ID:	12316+3201	WDS designation
Discoverer Code:	COU966	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	61124	Hipparcos catalog number
V1:	10.18	Magnitude of the primary
V2:	10.99	Magnitude of the secondary
Equinox:		Equinox
Date:	1997	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU966

WDS 6th Orbit including measures of COU966

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of COU966

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.106    316.3
-------------------------
1980.0     0.158     85.4
1981.0     0.159     83.0
1982.0     0.160     80.7
1983.0     0.161     78.4
1984.0     0.162     76.1
1985.0     0.162     73.8
1986.0     0.163     71.6
1987.0     0.163     69.3
1988.0     0.164     67.1
1989.0     0.164     64.9
1990.0     0.164     62.6
1991.0     0.164     60.4
1992.0     0.164     58.2
1993.0     0.164     56.0
1994.0     0.164     53.8
1995.0     0.163     51.6
1996.0     0.163     49.3
1997.0     0.162     47.1
1998.0     0.161     44.8
1999.0     0.161     42.5
2000.0     0.160     40.1
2001.0     0.159     37.8
2002.0     0.157     35.4
2003.0     0.156     33.0
2004.0     0.155     30.5
2005.0     0.153     28.0
2006.0     0.151     25.4
2007.0     0.150     22.8
2008.0     0.148     20.1
2009.0     0.146     17.3
2010.0     0.144     14.5
2011.0     0.142     11.5
2012.0     0.140      8.5
2013.0     0.137      5.4
2014.0     0.135      2.2
2015.0     0.132    358.9
2016.0     0.130    355.4
2017.0     0.127    351.8
2018.0     0.125    348.0
2019.0     0.122    344.1
2020.0     0.119    340.0
2021.0     0.116    335.7
2022.0     0.114    331.2
2023.0     0.111    326.5
2024.0     0.108    321.5
2025.0     0.106    316.3
2026.0     0.103    310.8
2027.0     0.100    305.0
2028.0     0.098    299.0
2029.0     0.096    292.6
2030.0     0.094    286.0
2031.0     0.092    279.1
2032.0     0.091    272.0
2033.0     0.089    264.6
2034.0     0.089    257.1
2035.0     0.088    249.4
2036.0     0.088    241.6
2037.0     0.088    233.9
2038.0     0.088    226.2
2039.0     0.089    218.6
2040.0     0.090    211.2
2041.0     0.092    203.9
2042.0     0.093    197.0
2043.0     0.095    190.3
2044.0     0.097    183.8
2045.0     0.100    177.7
2046.0     0.102    171.8
2047.0     0.105    166.3
2048.0     0.108    161.0
2049.0     0.110    155.9
2050.0     0.113    151.1
2051.0     0.116    146.6
2052.0     0.119    142.2
2053.0     0.121    138.1
2054.0     0.124    134.1
2055.0     0.127    130.3
2056.0     0.129    126.7
2057.0     0.132    123.2
2058.0     0.134    119.8
2059.0     0.137    116.6
2060.0     0.139    113.5
2061.0     0.141    110.4
2062.0     0.144    107.5
2063.0     0.146    104.6
2064.0     0.148    101.8
2065.0     0.149     99.1
2066.0     0.151     96.5
2067.0     0.153     93.9
2068.0     0.154     91.4
2069.0     0.156     88.9

Disclaimer

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.