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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:37:55

Orbital Elements for COU982

WDS:	COU982	WDS ID/Discoverer
P:	88.300	Orbital period (years)
a:	0.38	Semi-major axis (arcseconds)
i:	62.1	Inclination (degrees)
Ω:	74.3	Longitude of ascending node (degrees)
T:	2000.490	Epoch of periastron passage (year)
e:	0.49	Eccentricity
ω:	43.5	Longitude of periastron (degrees)
Start-Year:	1981.0	Year
End-Year:	2069.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU982

Position:	162135.18+363043.1	Epoch-2000 right ascension and declination
WDS-ID:	16216+3631	WDS designation
Discoverer Code:	COU982	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.4	Magnitude of the primary
V2:	9.4	Magnitude of the secondary
Equinox:		Equinox
Date:	2006	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU982

WDS 6th Orbit including measures of COU982

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

Ephemeris of COU982

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.478    258.3
-------------------------
1981.0     0.202    346.0
1982.0     0.198    351.9
1983.0     0.196    358.1
1984.0     0.195      4.4
1985.0     0.195     10.7
1986.0     0.197     17.0
1987.0     0.200     23.1
1988.0     0.204     28.9
1989.0     0.209     34.5
1990.0     0.214     39.9
1991.0     0.219     45.0
1992.0     0.223     49.9
1993.0     0.226     54.7
1994.0     0.227     59.3
1995.0     0.226     64.0
1996.0     0.222     68.8
1997.0     0.214     73.8
1998.0     0.202     79.3
1999.0     0.185     85.8
2000.0     0.165     93.6
2001.0     0.142    103.8
2002.0     0.120    117.9
2003.0     0.105    137.2
2004.0     0.100    160.6
2005.0     0.110    182.8
2006.0     0.130    199.7
2007.0     0.156    211.6
2008.0     0.184    220.0
2009.0     0.212    226.2
2010.0     0.239    230.9
2011.0     0.265    234.7
2012.0     0.290    237.9
2013.0     0.313    240.5
2014.0     0.334    242.8
2015.0     0.354    244.8
2016.0     0.373    246.6
2017.0     0.390    248.3
2018.0     0.405    249.8
2019.0     0.419    251.2
2020.0     0.432    252.6
2021.0     0.444    253.8
2022.0     0.454    255.0
2023.0     0.463    256.1
2024.0     0.471    257.2
2025.0     0.478    258.3
2026.0     0.484    259.3
2027.0     0.489    260.4
2028.0     0.493    261.3
2029.0     0.497    262.3
2030.0     0.499    263.3
2031.0     0.500    264.3
2032.0     0.501    265.2
2033.0     0.501    266.2
2034.0     0.500    267.1
2035.0     0.498    268.1
2036.0     0.496    269.1
2037.0     0.493    270.1
2038.0     0.489    271.1
2039.0     0.485    272.1
2040.0     0.480    273.1
2041.0     0.474    274.2
2042.0     0.468    275.2
2043.0     0.461    276.3
2044.0     0.454    277.5
2045.0     0.447    278.7
2046.0     0.438    279.9
2047.0     0.430    281.2
2048.0     0.421    282.5
2049.0     0.411    283.9
2050.0     0.401    285.3
2051.0     0.391    286.9
2052.0     0.380    288.5
2053.0     0.369    290.2
2054.0     0.358    292.0
2055.0     0.347    293.9
2056.0     0.335    296.0
2057.0     0.324    298.2
2058.0     0.312    300.6
2059.0     0.300    303.2
2060.0     0.288    305.9
2061.0     0.277    309.0
2062.0     0.266    312.2
2063.0     0.255    315.8
2064.0     0.244    319.6
2065.0     0.234    323.8
2066.0     0.225    328.4
2067.0     0.217    333.3
2068.0     0.210    338.6

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.