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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:45:59

Orbital Elements for COU384

WDS:	COU384	WDS ID/Discoverer
P:	40.430	Orbital period (years)
a:	0.1475	Semi-major axis (arcseconds)
i:	96.83	Inclination (degrees)
Ω:	60.96	Longitude of ascending node (degrees)
T:	1999.330	Epoch of periastron passage (year)
e:	0.379	Eccentricity
ω:	31.3	Longitude of periastron (degrees)
Start-Year:	2005.0	Year
End-Year:	2045.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU384

Position:	091816.92+184651.7	Epoch-2000 right ascension and declination
WDS-ID:	09183+1847	WDS designation
Discoverer Code:	COU384	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	80082	HD catalog number
Hipparcos number:	45648	Hipparcos catalog number
V1:	8.2	Magnitude of the primary
V2:	8.3	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU384

WDS 6th Orbit including measures of COU384

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

Ephemeris of COU384

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.110    231.0
-------------------------
2005.0     0.075    250.7
2006.0     0.098    247.8
2007.0     0.119    246.0
2008.0     0.137    244.7
2009.0     0.152    243.7
2010.0     0.165    242.8
2011.0     0.175    242.1
2012.0     0.183    241.4
2013.0     0.188    240.8
2014.0     0.191    240.2
2015.0     0.192    239.6
2016.0     0.192    239.0
2017.0     0.189    238.5
2018.0     0.184    237.8
2019.0     0.178    237.2
2020.0     0.171    236.5
2021.0     0.161    235.7
2022.0     0.150    234.8
2023.0     0.138    233.8
2024.0     0.125    232.6
2025.0     0.110    231.0
2026.0     0.094    229.0
2027.0     0.078    226.1
2028.0     0.060    221.5
2029.0     0.043    213.2
2030.0     0.027    194.2
2031.0     0.019    146.2
2032.0     0.028    100.2
2033.0     0.044     82.3
2034.0     0.060     74.2
2035.0     0.076     69.5
2036.0     0.088     66.4
2037.0     0.095     63.8
2038.0     0.096     61.5
2039.0     0.089     59.1
2040.0     0.074     55.9
2041.0     0.052     50.5
2042.0     0.026     34.7
2043.0     0.014    305.2
2044.0     0.038    261.4

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.