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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:28:51

Orbital Elements for BU1164AB

WDS:	BU1164AB	WDS ID/Discoverer
P:	63.730	Orbital period (years)
a:	0.291	Semi-major axis (arcseconds)
i:	107.7	Inclination (degrees)
Ω:	163.9	Longitude of ascending node (degrees)
T:	2008.190	Epoch of periastron passage (year)
e:	0.771	Eccentricity
ω:	196.0	Longitude of periastron (degrees)
Start-Year:	1994.0	Year
End-Year:	2056.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1164AB

Position:	012739.81+052111.2	Epoch-2000 right ascension and declination
WDS-ID:	01277+0521	WDS designation
Discoverer Code:	BU1164AB	Discover designation and components
ADS number:	1158	Aitken Double Star catalog
HD number:	8875	HD catalog number
Hipparcos number:	6815	Hipparcos catalog number
V1:	7.56	Magnitude of the primary
V2:	8.41	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BU1164AB

WDS 6th Orbit including measures of BU1164AB

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

Ephemeris of BU1164AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.432    164.9
-------------------------
1994.0     0.316    149.6
1995.0     0.296    148.6
1996.0     0.276    147.5
1997.0     0.254    146.2
1998.0     0.232    144.6
1999.0     0.207    142.7
2000.0     0.182    140.2
2001.0     0.155    136.9
2002.0     0.127    132.3
2003.0     0.099    124.9
2004.0     0.071    111.6
2005.0     0.049     83.9
2006.0     0.045     37.8
2007.0     0.061      3.8
2008.0     0.067    343.0
2009.0     0.039    310.1
2010.0     0.039    221.2
2011.0     0.082    191.7
2012.0     0.125    182.7
2013.0     0.164    178.2
2014.0     0.200    175.4
2015.0     0.232    173.4
2016.0     0.261    171.8
2017.0     0.287    170.6
2018.0     0.312    169.6
2019.0     0.334    168.7
2020.0     0.354    167.9
2021.0     0.373    167.2
2022.0     0.390    166.6
2023.0     0.405    166.0
2024.0     0.419    165.4
2025.0     0.432    164.9
2026.0     0.444    164.4
2027.0     0.454    164.0
2028.0     0.463    163.5
2029.0     0.471    163.1
2030.0     0.478    162.7
2031.0     0.485    162.3
2032.0     0.490    161.9
2033.0     0.494    161.5
2034.0     0.497    161.2
2035.0     0.499    160.8
2036.0     0.501    160.4
2037.0     0.501    160.0
2038.0     0.501    159.7
2039.0     0.500    159.3
2040.0     0.497    158.9
2041.0     0.494    158.6
2042.0     0.491    158.2
2043.0     0.486    157.8
2044.0     0.481    157.4
2045.0     0.474    157.0
2046.0     0.467    156.6
2047.0     0.459    156.1
2048.0     0.450    155.7
2049.0     0.440    155.2
2050.0     0.430    154.7
2051.0     0.418    154.2
2052.0     0.406    153.7
2053.0     0.392    153.1
2054.0     0.378    152.5
2055.0     0.363    151.8

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.