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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:21:58

Orbital Elements for BTM1AA,AB

WDS:	BTM1AA,AB	WDS ID/Discoverer
P:	52.800	Orbital period (years)
a:	0.62	Semi-major axis (arcseconds)
i:	137.0	Inclination (degrees)
Ω:	290.0	Longitude of ascending node (degrees)
T:	1958.500	Epoch of periastron passage (year)
e:	0.5	Eccentricity
ω:	231.0	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 BTM1AA,AB

Position:	003919.60+305140.4	Epoch-2000 right ascension and declination
WDS-ID:	00393+3052	WDS designation
Discoverer Code:	BTM1AA,AB	Discover designation and components
ADS number:	548	Aitken Double Star catalog
HD number:	3627	HD catalog number
Hipparcos number:	3092	Hipparcos catalog number
V1:	3.28	Magnitude of the primary
V2:	10.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BTM1AA,AB

WDS 6th Orbit including measures of BTM1AA,AB

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

Ephemeris of BTM1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.759    280.3
-------------------------
1999.0     0.535    193.8
2000.0     0.517    187.8
2001.0     0.499    181.4
2002.0     0.483    174.5
2003.0     0.467    167.1
2004.0     0.453    159.3
2005.0     0.438    150.9
2006.0     0.422    141.9
2007.0     0.404    132.2
2008.0     0.381    121.5
2009.0     0.352    109.1
2010.0     0.314     94.2
2011.0     0.274     74.8
2012.0     0.244     49.7
2013.0     0.244     21.1
2014.0     0.278    356.2
2015.0     0.332    338.1
2016.0     0.392    325.3
2017.0     0.452    315.9
2018.0     0.508    308.7
2019.0     0.558    302.9
2020.0     0.604    297.9
2021.0     0.644    293.7
2022.0     0.680    289.9
2023.0     0.710    286.5
2024.0     0.737    283.3
2025.0     0.759    280.3
2026.0     0.778    277.5
2027.0     0.793    274.8
2028.0     0.805    272.2
2029.0     0.814    269.7
2030.0     0.820    267.2
2031.0     0.823    264.7
2032.0     0.824    262.3
2033.0     0.823    259.8
2034.0     0.819    257.4
2035.0     0.813    254.9
2036.0     0.806    252.4
2037.0     0.796    249.8
2038.0     0.785    247.1
2039.0     0.772    244.4
2040.0     0.758    241.5
2041.0     0.743    238.6
2042.0     0.726    235.5
2043.0     0.709    232.3
2044.0     0.690    228.9
2045.0     0.671    225.3
2046.0     0.651    221.5
2047.0     0.631    217.5
2048.0     0.610    213.2
2049.0     0.590    208.6
2050.0     0.570    203.6

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.