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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:22:08

Orbital Elements for LAB6AA,AB

WDS:	LAB6AA,AB	WDS ID/Discoverer
P:	81.087	Orbital period (years)
a:	0.20696	Semi-major axis (arcseconds)
i:	88.8	Inclination (degrees)
Ω:	227.83	Longitude of ascending node (degrees)
T:	1998.357	Epoch of periastron passage (year)
e:	0.7478	Eccentricity
ω:	202.43	Longitude of periastron (degrees)
Start-Year:	1985.0	Year
End-Year:	2065.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LAB6AA,AB

Position:	212839.58+703338.5	Epoch-2000 right ascension and declination
WDS-ID:	21287+7034	WDS designation
Discoverer Code:	LAB6AA,AB	Discover designation and components
ADS number:	15032	Aitken Double Star catalog
HD number:	205021	HD catalog number
Hipparcos number:	106032	Hipparcos catalog number
V1:	3.20	Magnitude of the primary
V2:	6.6	Magnitude of the secondary
Equinox:		Equinox
Date:	2002	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for LAB6AA,AB

WDS 6th Orbit including measures of LAB6AA,AB

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

Ephemeris of LAB6AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.328    228.0
-------------------------
1985.0     0.129    229.7
1986.0     0.116    229.9
1987.0     0.101    230.1
1988.0     0.087    230.4
1989.0     0.072    230.8
1990.0     0.056    231.5
1991.0     0.040    232.7
1992.0     0.023    235.6
1993.0     0.006    254.8
1994.0     0.012     36.2
1995.0     0.029     43.9
1996.0     0.044     46.0
1997.0     0.054     47.1
1998.0     0.053     48.0
1999.0     0.035     49.3
2000.0     0.006     62.7
2001.0     0.025    224.0
2002.0     0.054    225.9
2003.0     0.080    226.5
2004.0     0.104    226.8
2005.0     0.126    227.0
2006.0     0.146    227.1
2007.0     0.164    227.3
2008.0     0.180    227.3
2009.0     0.196    227.4
2010.0     0.210    227.5
2011.0     0.223    227.5
2012.0     0.235    227.6
2013.0     0.247    227.6
2014.0     0.257    227.7
2015.0     0.267    227.7
2016.0     0.276    227.7
2017.0     0.284    227.8
2018.0     0.291    227.8
2019.0     0.298    227.8
2020.0     0.305    227.9
2021.0     0.310    227.9
2022.0     0.316    227.9
2023.0     0.320    228.0
2024.0     0.325    228.0
2025.0     0.328    228.0
2026.0     0.331    228.0
2027.0     0.334    228.1
2028.0     0.336    228.1
2029.0     0.338    228.1
2030.0     0.340    228.1
2031.0     0.341    228.1
2032.0     0.341    228.2
2033.0     0.341    228.2
2034.0     0.341    228.2
2035.0     0.341    228.2
2036.0     0.340    228.3
2037.0     0.338    228.3
2038.0     0.336    228.3
2039.0     0.334    228.3
2040.0     0.332    228.4
2041.0     0.329    228.4
2042.0     0.325    228.4
2043.0     0.322    228.4
2044.0     0.318    228.5
2045.0     0.313    228.5
2046.0     0.309    228.5
2047.0     0.303    228.5
2048.0     0.298    228.6
2049.0     0.292    228.6
2050.0     0.286    228.6
2051.0     0.279    228.7
2052.0     0.272    228.7
2053.0     0.265    228.7
2054.0     0.257    228.8
2055.0     0.249    228.8
2056.0     0.240    228.9
2057.0     0.231    228.9
2058.0     0.222    229.0
2059.0     0.212    229.0
2060.0     0.202    229.1
2061.0     0.191    229.1
2062.0     0.180    229.2
2063.0     0.168    229.3
2064.0     0.156    229.4

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.