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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:26:23

Orbital Elements for R65AB

WDS:	R65AB	WDS ID/Discoverer
P:	53.030	Orbital period (years)
a:	0.414	Semi-major axis (arcseconds)
i:	157.1	Inclination (degrees)
Ω:	185.9	Longitude of ascending node (degrees)
T:	1968.370	Epoch of periastron passage (year)
e:	0.968	Eccentricity
ω:	96.5	Longitude of periastron (degrees)
Start-Year:	1999.0	Year
End-Year:	2051.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for R65AB

Position:	062949.03-501420.7	Epoch-2000 right ascension and declination
WDS-ID:	06298-5014	WDS designation
Discoverer Code:	R65AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	46273	HD catalog number
Hipparcos number:	30953	Hipparcos catalog number
V1:	5.97	Magnitude of the primary
V2:	6.15	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for R65AB

WDS 6th Orbit including measures of R65AB

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

Ephemeris of R65AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.311    288.0
-------------------------
1999.0     0.741    266.9
2000.0     0.734    266.4
2001.0     0.727    265.9
2002.0     0.718    265.4
2003.0     0.708    264.8
2004.0     0.696    264.3
2005.0     0.682    263.7
2006.0     0.667    263.1
2007.0     0.650    262.5
2008.0     0.632    261.8
2009.0     0.611    261.2
2010.0     0.589    260.4
2011.0     0.564    259.6
2012.0     0.537    258.7
2013.0     0.507    257.7
2014.0     0.475    256.6
2015.0     0.439    255.3
2016.0     0.399    253.8
2017.0     0.355    251.9
2018.0     0.304    249.4
2019.0     0.245    245.8
2020.0     0.174    239.6
2021.0     0.074    220.0
2022.0     0.097    311.3
2023.0     0.186    296.9
2024.0     0.254    291.3
2025.0     0.311    288.0
2026.0     0.360    285.6
2027.0     0.404    283.7
2028.0     0.443    282.2
2029.0     0.478    280.9
2030.0     0.510    279.8
2031.0     0.539    278.9
2032.0     0.566    278.0
2033.0     0.590    277.2
2034.0     0.613    276.4
2035.0     0.633    275.7
2036.0     0.651    275.1
2037.0     0.668    274.5
2038.0     0.683    273.9
2039.0     0.696    273.3
2040.0     0.708    272.8
2041.0     0.718    272.2
2042.0     0.727    271.7
2043.0     0.735    271.2
2044.0     0.741    270.7
2045.0     0.745    270.2
2046.0     0.749    269.8
2047.0     0.751    269.3
2048.0     0.751    268.8
2049.0     0.751    268.3
2050.0     0.749    267.9

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.