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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:08:05

Orbital Elements for BU794AB

WDS:	BU794AB	WDS ID/Discoverer
P:	76.700	Orbital period (years)
a:	0.41	Semi-major axis (arcseconds)
i:	39.0	Inclination (degrees)
Ω:	22.0	Longitude of ascending node (degrees)
T:	1987.300	Epoch of periastron passage (year)
e:	0.5	Eccentricity
ω:	247.0	Longitude of periastron (degrees)
Start-Year:	1987.0	Year
End-Year:	2063.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU794AB

Position:	115343.07+734521.6	Epoch-2000 right ascension and declination
WDS-ID:	11537+7345	WDS designation
Discoverer Code:	BU794AB	Discover designation and components
ADS number:	8337	Aitken Double Star catalog
HD number:	103246	HD catalog number
Hipparcos number:	57994	Hipparcos catalog number
V1:	7.23	Magnitude of the primary
V2:	8.32	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BU794AB

WDS 6th Orbit including measures of BU794AB

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

Ephemeris of BU794AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.503     82.0
-------------------------
1987.0     0.171    257.8
1988.0     0.162    277.1
1989.0     0.166    297.1
1990.0     0.179    315.1
1991.0     0.201    330.0
1992.0     0.226    341.7
1993.0     0.252    351.1
1994.0     0.278    358.6
1995.0     0.303      4.9
1996.0     0.326     10.3
1997.0     0.348     15.0
1998.0     0.368     19.1
1999.0     0.386     22.8
2000.0     0.403     26.3
2001.0     0.418     29.4
2002.0     0.432     32.3
2003.0     0.444     35.1
2004.0     0.455     37.7
2005.0     0.465     40.2
2006.0     0.474     42.6
2007.0     0.482     45.0
2008.0     0.489     47.2
2009.0     0.495     49.4
2010.0     0.500     51.6
2011.0     0.505     53.7
2012.0     0.508     55.7
2013.0     0.511     57.8
2014.0     0.513     59.8
2015.0     0.515     61.8
2016.0     0.516     63.8
2017.0     0.516     65.8
2018.0     0.516     67.8
2019.0     0.516     69.8
2020.0     0.515     71.8
2021.0     0.513     73.8
2022.0     0.511     75.8
2023.0     0.509     77.8
2024.0     0.506     79.9
2025.0     0.503     82.0
2026.0     0.500     84.1
2027.0     0.496     86.2
2028.0     0.493     88.4
2029.0     0.488     90.6
2030.0     0.484     92.9
2031.0     0.479     95.2
2032.0     0.474     97.5
2033.0     0.469     99.9
2034.0     0.464    102.3
2035.0     0.458    104.8
2036.0     0.453    107.4
2037.0     0.447    110.0
2038.0     0.441    112.7
2039.0     0.435    115.4
2040.0     0.429    118.3
2041.0     0.423    121.2
2042.0     0.417    124.2
2043.0     0.410    127.3
2044.0     0.404    130.5
2045.0     0.397    133.8
2046.0     0.391    137.3
2047.0     0.384    140.8
2048.0     0.377    144.5
2049.0     0.369    148.3
2050.0     0.362    152.3
2051.0     0.354    156.4
2052.0     0.345    160.8
2053.0     0.337    165.3
2054.0     0.327    170.2
2055.0     0.316    175.3
2056.0     0.304    180.8
2057.0     0.291    186.8
2058.0     0.277    193.4
2059.0     0.260    200.7
2060.0     0.242    209.2
2061.0     0.221    219.1
2062.0     0.201    231.1

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.