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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:00:02

Orbital Elements for COU2682

WDS:	COU2682	WDS ID/Discoverer
P:	54.800	Orbital period (years)
a:	0.348	Semi-major axis (arcseconds)
i:	68.7	Inclination (degrees)
Ω:	328.5	Longitude of ascending node (degrees)
T:	1955.600	Epoch of periastron passage (year)
e:	0.163	Eccentricity
ω:	11.6	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU2682

Position:	042547.49+180102.5	Epoch-2000 right ascension and declination
WDS-ID:	04258+1800	WDS designation
Discoverer Code:	COU2682	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27990	HD catalog number
Hipparcos number:	20679	Hipparcos catalog number
V1:	9.49	Magnitude of the primary
V2:	10.60	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU2682

WDS 6th Orbit including measures of COU2682

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

Ephemeris of COU2682

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.236    121.4
-------------------------
1998.0     0.127    242.4
1999.0     0.132    259.7
2000.0     0.146    274.6
2001.0     0.166    286.5
2002.0     0.188    295.6
2003.0     0.212    302.8
2004.0     0.234    308.5
2005.0     0.254    313.3
2006.0     0.270    317.5
2007.0     0.283    321.2
2008.0     0.290    324.7
2009.0     0.292    328.0
2010.0     0.289    331.4
2011.0     0.280    334.9
2012.0     0.266    338.7
2013.0     0.248    343.0
2014.0     0.226    348.1
2015.0     0.201    354.3
2016.0     0.176      2.4
2017.0     0.151     13.2
2018.0     0.131     27.6
2019.0     0.120     45.9
2020.0     0.121     65.9
2021.0     0.133     83.8
2022.0     0.154     97.7
2023.0     0.180    108.0
2024.0     0.208    115.6
2025.0     0.236    121.4
2026.0     0.263    126.0
2027.0     0.289    129.8
2028.0     0.312    132.9
2029.0     0.334    135.7
2030.0     0.352    138.1
2031.0     0.368    140.3
2032.0     0.381    142.3
2033.0     0.391    144.2
2034.0     0.398    146.0
2035.0     0.402    147.8
2036.0     0.403    149.6
2037.0     0.401    151.3
2038.0     0.396    153.1
2039.0     0.388    155.0
2040.0     0.378    156.9
2041.0     0.364    159.0
2042.0     0.348    161.2
2043.0     0.330    163.7
2044.0     0.309    166.5
2045.0     0.286    169.7
2046.0     0.262    173.5
2047.0     0.237    178.1
2048.0     0.211    183.8
2049.0     0.185    191.1
2050.0     0.162    200.7
2051.0     0.143    213.0

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.