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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:31:23

Orbital Elements for B548

WDS:	B548	WDS ID/Discoverer
P:	77.030	Orbital period (years)
a:	0.265	Semi-major axis (arcseconds)
i:	73.0	Inclination (degrees)
Ω:	210.9	Longitude of ascending node (degrees)
T:	2019.800	Epoch of periastron passage (year)
e:	0.186	Eccentricity
ω:	54.0	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 B548

Position:	220536.53-585737.9	Epoch-2000 right ascension and declination
WDS-ID:	22056-5858	WDS designation
Discoverer Code:	B548	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	209499	HD catalog number
Hipparcos number:	109060	Hipparcos catalog number
V1:	8.9	Magnitude of the primary
V2:	9.1	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for B548

WDS 6th Orbit including measures of B548

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

Ephemeris of B548

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.065    298.6
-------------------------
1987.0     0.126     74.3
1988.0     0.115     80.8
1989.0     0.104     88.7
1990.0     0.096     98.1
1991.0     0.090    109.0
1992.0     0.088    120.9
1993.0     0.089    133.0
1994.0     0.094    144.4
1995.0     0.101    154.4
1996.0     0.110    162.9
1997.0     0.121    170.0
1998.0     0.133    175.8
1999.0     0.145    180.7
2000.0     0.158    184.8
2001.0     0.170    188.3
2002.0     0.181    191.4
2003.0     0.192    194.1
2004.0     0.202    196.5
2005.0     0.211    198.7
2006.0     0.219    200.8
2007.0     0.225    202.7
2008.0     0.229    204.5
2009.0     0.232    206.3
2010.0     0.233    208.0
2011.0     0.232    209.8
2012.0     0.229    211.5
2013.0     0.224    213.4
2014.0     0.217    215.3
2015.0     0.207    217.4
2016.0     0.196    219.7
2017.0     0.183    222.3
2018.0     0.167    225.4
2019.0     0.151    229.2
2020.0     0.133    233.9
2021.0     0.115    240.0
2022.0     0.097    248.5
2023.0     0.081    260.5
2024.0     0.070    277.3
2025.0     0.065    298.6
2026.0     0.069    320.0
2027.0     0.081    337.2
2028.0     0.097    349.3
2029.0     0.115    357.9
2030.0     0.133      4.0
2031.0     0.152      8.7
2032.0     0.170     12.3
2033.0     0.187     15.3
2034.0     0.204     17.8
2035.0     0.219     19.9
2036.0     0.232     21.7
2037.0     0.245     23.4
2038.0     0.255     24.9
2039.0     0.265     26.3
2040.0     0.273     27.6
2041.0     0.279     28.8
2042.0     0.284     30.0
2043.0     0.288     31.2
2044.0     0.290     32.3
2045.0     0.291     33.4
2046.0     0.291     34.5
2047.0     0.289     35.6
2048.0     0.286     36.8
2049.0     0.282     37.9
2050.0     0.277     39.2
2051.0     0.271     40.4
2052.0     0.264     41.7
2053.0     0.256     43.1
2054.0     0.247     44.6
2055.0     0.237     46.2
2056.0     0.226     48.0
2057.0     0.215     49.9
2058.0     0.203     52.1
2059.0     0.191     54.5
2060.0     0.178     57.3
2061.0     0.165     60.5
2062.0     0.152     64.3

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.