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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:01:54

Orbital Elements for BU1077AB

WDS:	BU1077AB	WDS ID/Discoverer
P:	44.448	Orbital period (years)
a:	0.59	Semi-major axis (arcseconds)
i:	159.9	Inclination (degrees)
Ω:	9.3	Longitude of ascending node (degrees)
T:	2002.170	Epoch of periastron passage (year)
e:	0.4392	Eccentricity
ω:	232.8	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1077AB

Position:	110343.84+614504.0	Epoch-2000 right ascension and declination
WDS-ID:	11037+6145	WDS designation
Discoverer Code:	BU1077AB	Discover designation and components
ADS number:	8035	Aitken Double Star catalog
HD number:	95689	HD catalog number
Hipparcos number:	54061	Hipparcos catalog number
V1:	2.02	Magnitude of the primary
V2:	4.95	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BU1077AB

WDS 6th Orbit including measures of BU1077AB

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

Ephemeris of BU1077AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.814    316.1
-------------------------
2003.0     0.318    118.6
2004.0     0.335     96.1
2005.0     0.367     76.6
2006.0     0.408     60.7
2007.0     0.453     47.9
2008.0     0.498     37.3
2009.0     0.542     28.5
2010.0     0.582     21.0
2011.0     0.619     14.4
2012.0     0.653      8.5
2013.0     0.683      3.2
2014.0     0.710    358.3
2015.0     0.734    353.7
2016.0     0.754    349.4
2017.0     0.772    345.4
2018.0     0.786    341.4
2019.0     0.798    337.6
2020.0     0.807    334.0
2021.0     0.813    330.3
2022.0     0.817    326.8
2023.0     0.819    323.2
2024.0     0.818    319.7
2025.0     0.814    316.1
2026.0     0.809    312.5
2027.0     0.801    308.8
2028.0     0.791    305.0
2029.0     0.779    301.2
2030.0     0.765    297.2
2031.0     0.748    293.0
2032.0     0.730    288.7
2033.0     0.710    284.1
2034.0     0.687    279.2
2035.0     0.663    274.0
2036.0     0.637    268.4
2037.0     0.610    262.3
2038.0     0.580    255.6
2039.0     0.549    248.1
2040.0     0.517    239.7
2041.0     0.483    230.2
2042.0     0.449    219.3
2043.0     0.414    206.5
2044.0     0.380    191.4
2045.0     0.350    173.4
2046.0     0.326    152.5

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.