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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:14

Orbital Elements for COU292

WDS:	COU292	WDS ID/Discoverer
P:	25.020	Orbital period (years)
a:	0.149	Semi-major axis (arcseconds)
i:	138.4	Inclination (degrees)
Ω:	61.7	Longitude of ascending node (degrees)
T:	1981.600	Epoch of periastron passage (year)
e:	0.592	Eccentricity
ω:	215.1	Longitude of periastron (degrees)
Start-Year:	2013.0	Year
End-Year:	2037.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU292

Position:	102654.22+193044.9	Epoch-2000 right ascension and declination
WDS-ID:	10269+1931	WDS designation
Discoverer Code:	COU292	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	90460	HD catalog number
Hipparcos number:	51147	Hipparcos catalog number
V1:	8.42	Magnitude of the primary
V2:	8.79	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2006	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU292

WDS 6th Orbit including measures of COU292

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

Ephemeris of COU292

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.158      3.2
-------------------------
2013.0     0.194     59.4
2014.0     0.206     54.6
2015.0     0.215     50.3
2016.0     0.220     46.2
2017.0     0.223     42.3
2018.0     0.223     38.4
2019.0     0.220     34.5
2020.0     0.215     30.4
2021.0     0.207     26.1
2022.0     0.198     21.4
2023.0     0.186     16.2
2024.0     0.173     10.2
2025.0     0.158      3.2
2026.0     0.141    354.6
2027.0     0.124    343.6
2028.0     0.107    329.1
2029.0     0.092    309.4
2030.0     0.079    282.7
2031.0     0.067    246.6
2032.0     0.052    189.8
2033.0     0.066    125.6
2034.0     0.099     95.9
2035.0     0.131     81.2
2036.0     0.157     71.9

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.