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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:13:48

Orbital Elements for COU1579

WDS:	COU1579	WDS ID/Discoverer
P:	90.810	Orbital period (years)
a:	0.409	Semi-major axis (arcseconds)
i:	72.2	Inclination (degrees)
Ω:	158.0	Longitude of ascending node (degrees)
T:	2023.250	Epoch of periastron passage (year)
e:	0.646	Eccentricity
ω:	66.3	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 COU1579

Position:	125317.33+424616.8	Epoch-2000 right ascension and declination
WDS-ID:	12533+4246	WDS designation
Discoverer Code:	COU1579	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:	9.7	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU1579

WDS 6th Orbit including measures of COU1579

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

Ephemeris of COU1579

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.064    291.0
-------------------------
1980.0     0.310     16.1
1981.0     0.301     17.8
1982.0     0.292     19.5
1983.0     0.282     21.4
1984.0     0.273     23.4
1985.0     0.264     25.6
1986.0     0.255     27.9
1987.0     0.246     30.4
1988.0     0.237     33.0
1989.0     0.228     35.9
1990.0     0.220     39.0
1991.0     0.212     42.3
1992.0     0.205     45.8
1993.0     0.198     49.6
1994.0     0.192     53.7
1995.0     0.187     58.0
1996.0     0.182     62.6
1997.0     0.179     67.3
1998.0     0.176     72.2
1999.0     0.175     77.3
2000.0     0.174     82.4
2001.0     0.175     87.5
2002.0     0.176     92.5
2003.0     0.179     97.4
2004.0     0.182    102.2
2005.0     0.186    106.7
2006.0     0.191    111.1
2007.0     0.196    115.2
2008.0     0.201    119.2
2009.0     0.207    122.9
2010.0     0.213    126.4
2011.0     0.218    129.7
2012.0     0.222    132.9
2013.0     0.226    136.0
2014.0     0.229    139.0
2015.0     0.230    141.9
2016.0     0.230    144.8
2017.0     0.226    147.8
2018.0     0.219    150.9
2019.0     0.206    154.3
2020.0     0.188    158.3
2021.0     0.161    163.4
2022.0     0.125    171.0
2023.0     0.082    186.2
2024.0     0.047    229.6
2025.0     0.064    291.0
2026.0     0.109    313.6
2027.0     0.154    322.8
2028.0     0.195    327.9
2029.0     0.231    331.3
2030.0     0.263    333.9
2031.0     0.291    335.9
2032.0     0.316    337.6
2033.0     0.337    339.0
2034.0     0.356    340.3
2035.0     0.372    341.5
2036.0     0.386    342.6
2037.0     0.398    343.6
2038.0     0.409    344.5
2039.0     0.418    345.4
2040.0     0.425    346.3
2041.0     0.432    347.1
2042.0     0.437    348.0
2043.0     0.441    348.8
2044.0     0.444    349.5
2045.0     0.446    350.3
2046.0     0.447    351.1
2047.0     0.448    351.9
2048.0     0.448    352.6
2049.0     0.447    353.4
2050.0     0.445    354.2
2051.0     0.443    355.0
2052.0     0.440    355.8
2053.0     0.436    356.6
2054.0     0.432    357.4
2055.0     0.428    358.2
2056.0     0.423    359.1
2057.0     0.417    360.0
2058.0     0.412      0.9
2059.0     0.405      1.8
2060.0     0.399      2.8
2061.0     0.392      3.7
2062.0     0.385      4.8
2063.0     0.377      5.8
2064.0     0.369      7.0
2065.0     0.361      8.1
2066.0     0.353      9.3
2067.0     0.344     10.6
2068.0     0.336     11.9
2069.0     0.327     13.3

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.