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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:12:25

Orbital Elements for WSI122

WDS:	WSI122	WDS ID/Discoverer
P:	65.000	Orbital period (years)
a:	0.769	Semi-major axis (arcseconds)
i:	131.7	Inclination (degrees)
Ω:	165.7	Longitude of ascending node (degrees)
T:	2009.030	Epoch of periastron passage (year)
e:	0.641	Eccentricity
ω:	153.3	Longitude of periastron (degrees)
Start-Year:	1993.0	Year
End-Year:	2057.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSI122

Position:	051009.67-723627.9	Epoch-2000 right ascension and declination
WDS-ID:	05102-7236	WDS designation
Discoverer Code:	WSI122	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	271076	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	11.5	Magnitude of the primary
V2:	12.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for WSI122

WDS 6th Orbit including measures of WSI122

Ephemeris of WSI122

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.794    211.2
-------------------------
1993.0     1.018    163.5
1994.0     0.984    161.9
1995.0     0.946    160.1
1996.0     0.905    158.1
1997.0     0.860    156.0
1998.0     0.811    153.6
1999.0     0.758    150.9
2000.0     0.700    147.7
2001.0     0.637    143.9
2002.0     0.569    139.3
2003.0     0.496    133.4
2004.0     0.420    125.4
2005.0     0.343    113.8
2006.0     0.272     95.7
2007.0     0.226     67.9
2008.0     0.226     33.9
2009.0     0.259      4.9
2010.0     0.292    343.0
2011.0     0.311    324.7
2012.0     0.323    308.0
2013.0     0.338    292.7
2014.0     0.358    278.8
2015.0     0.386    266.7
2016.0     0.421    256.4
2017.0     0.459    247.7
2018.0     0.500    240.4
2019.0     0.543    234.3
2020.0     0.587    229.0
2021.0     0.630    224.5
2022.0     0.673    220.6
2023.0     0.714    217.1
2024.0     0.755    214.0
2025.0     0.794    211.2
2026.0     0.832    208.7
2027.0     0.868    206.3
2028.0     0.902    204.2
2029.0     0.935    202.2
2030.0     0.966    200.4
2031.0     0.995    198.6
2032.0     1.022    197.0
2033.0     1.048    195.4
2034.0     1.071    193.9
2035.0     1.093    192.5
2036.0     1.113    191.1
2037.0     1.131    189.8
2038.0     1.147    188.5
2039.0     1.162    187.3
2040.0     1.174    186.0
2041.0     1.184    184.8
2042.0     1.192    183.6
2043.0     1.199    182.5
2044.0     1.203    181.3
2045.0     1.205    180.2
2046.0     1.205    179.0
2047.0     1.203    177.9
2048.0     1.199    176.7
2049.0     1.192    175.5
2050.0     1.183    174.3
2051.0     1.172    173.1
2052.0     1.158    171.9
2053.0     1.142    170.6
2054.0     1.123    169.3
2055.0     1.101    168.0
2056.0     1.076    166.6

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.