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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:00:16

Orbital Elements for WOR15

WDS:	WOR15	WDS ID/Discoverer
P:	40.900	Orbital period (years)
a:	0.314	Semi-major axis (arcseconds)
i:	144.0	Inclination (degrees)
Ω:	136.0	Longitude of ascending node (degrees)
T:	2037.100	Epoch of periastron passage (year)
e:	0.811	Eccentricity
ω:	319.0	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 WOR15

Position:	042642.75+124111.8	Epoch-2000 right ascension and declination
WDS-ID:	04268+1240	WDS designation
Discoverer Code:	WOR15	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	286798	HD catalog number
Hipparcos number:	20745	Hipparcos catalog number
V1:	11.19	Magnitude of the primary
V2:	11.49	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 WOR15

WDS 6th Orbit including measures of WOR15

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

Ephemeris of WOR15

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.485    338.2
-------------------------
2005.0     0.371     13.6
2006.0     0.394     10.8
2007.0     0.415      8.3
2008.0     0.435      6.0
2009.0     0.452      3.9
2010.0     0.467      2.0
2011.0     0.481      0.2
2012.0     0.493    358.4
2013.0     0.503    356.8
2014.0     0.511    355.2
2015.0     0.518    353.6
2016.0     0.522    352.1
2017.0     0.526    350.6
2018.0     0.527    349.1
2019.0     0.527    347.6
2020.0     0.524    346.1
2021.0     0.520    344.6
2022.0     0.515    343.1
2023.0     0.507    341.5
2024.0     0.497    339.9
2025.0     0.485    338.2
2026.0     0.470    336.4
2027.0     0.453    334.5
2028.0     0.433    332.4
2029.0     0.410    330.1
2030.0     0.384    327.5
2031.0     0.354    324.5
2032.0     0.319    320.8
2033.0     0.279    316.2
2034.0     0.232    309.9
2035.0     0.175    299.9
2036.0     0.105    277.9
2037.0     0.053    185.4
2038.0     0.093     96.7
2039.0     0.137     64.4
2040.0     0.180     47.8
2041.0     0.219     37.4
2042.0     0.256     30.1
2043.0     0.289     24.6
2044.0     0.320     20.2

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.