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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:36:47

Orbital Elements for COU929

WDS:	COU929	WDS ID/Discoverer
P:	45.090	Orbital period (years)
a:	0.2555	Semi-major axis (arcseconds)
i:	71.8	Inclination (degrees)
Ω:	186.7	Longitude of ascending node (degrees)
T:	1997.980	Epoch of periastron passage (year)
e:	0.474	Eccentricity
ω:	70.6	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU929

Position:	075602.81+234135.1	Epoch-2000 right ascension and declination
WDS-ID:	07560+2342	WDS designation
Discoverer Code:	COU929	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	64704	HD catalog number
Hipparcos number:	38755	Hipparcos catalog number
V1:	7.90	Magnitude of the primary
V2:	8.57	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU929

WDS 6th Orbit including measures of COU929

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

Ephemeris of COU929

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.118     82.2
-------------------------
2003.0     0.196      1.5
2004.0     0.221      4.8
2005.0     0.241      7.5
2006.0     0.255      9.8
2007.0     0.264     12.0
2008.0     0.270     14.0
2009.0     0.272     15.9
2010.0     0.272     17.8
2011.0     0.269     19.8
2012.0     0.264     21.8
2013.0     0.257     23.9
2014.0     0.248     26.2
2015.0     0.238     28.6
2016.0     0.227     31.3
2017.0     0.214     34.2
2018.0     0.201     37.5
2019.0     0.188     41.3
2020.0     0.174     45.7
2021.0     0.161     50.8
2022.0     0.148     56.8
2023.0     0.136     64.0
2024.0     0.126     72.4
2025.0     0.118     82.2
2026.0     0.113     93.0
2027.0     0.111    104.5
2028.0     0.114    115.9
2029.0     0.119    126.5
2030.0     0.128    135.9
2031.0     0.138    144.0
2032.0     0.149    151.0
2033.0     0.160    157.0
2034.0     0.171    162.2
2035.0     0.180    166.9
2036.0     0.187    171.1
2037.0     0.191    175.1
2038.0     0.190    179.1
2039.0     0.182    183.2
2040.0     0.167    187.9
2041.0     0.141    193.9
2042.0     0.104    203.5
2043.0     0.062    225.6
2044.0     0.044    288.8
2045.0     0.078    334.4
2046.0     0.122    349.4

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.