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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:09:09

Orbital Elements for RST4958AA,AB

WDS:	RST4958AA,AB	WDS ID/Discoverer
P:	91.600	Orbital period (years)
a:	0.176	Semi-major axis (arcseconds)
i:	40.4	Inclination (degrees)
Ω:	5.4	Longitude of ascending node (degrees)
T:	1999.150	Epoch of periastron passage (year)
e:	0.4	Eccentricity
ω:	224.1	Longitude of periastron (degrees)
Start-Year:	1980.0	Year
End-Year:	2070.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST4958AA,AB

Position:	120555.32-495113.7	Epoch-2000 right ascension and declination
WDS-ID:	12059-4951	WDS designation
Discoverer Code:	RST4958AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	105080	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.0	Magnitude of the primary
V2:	10.0	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST4958AA,AB

WDS 6th Orbit including measures of RST4958AA,AB

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

Ephemeris of RST4958AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.212      8.1
-------------------------
1980.0     0.144    112.8
1981.0     0.142    116.9
1982.0     0.140    121.2
1983.0     0.138    125.6
1984.0     0.136    130.1
1985.0     0.135    134.7
1986.0     0.133    139.5
1987.0     0.132    144.3
1988.0     0.130    149.3
1989.0     0.129    154.3
1990.0     0.127    159.5
1991.0     0.125    164.9
1992.0     0.122    170.5
1993.0     0.120    176.3
1994.0     0.117    182.3
1995.0     0.113    188.8
1996.0     0.109    195.7
1997.0     0.104    203.2
1998.0     0.100    211.4
1999.0     0.095    220.4
2000.0     0.091    230.3
2001.0     0.088    241.0
2002.0     0.086    252.3
2003.0     0.086    263.8
2004.0     0.088    275.0
2005.0     0.092    285.6
2006.0     0.097    295.2
2007.0     0.103    303.8
2008.0     0.110    311.2
2009.0     0.118    317.8
2010.0     0.125    323.6
2011.0     0.133    328.7
2012.0     0.141    333.2
2013.0     0.148    337.3
2014.0     0.156    340.9
2015.0     0.163    344.3
2016.0     0.169    347.4
2017.0     0.175    350.3
2018.0     0.181    352.9
2019.0     0.187    355.4
2020.0     0.192    357.8
2021.0     0.197      0.0
2022.0     0.201      2.2
2023.0     0.205      4.2
2024.0     0.209      6.2
2025.0     0.212      8.1
2026.0     0.215     10.0
2027.0     0.218     11.8
2028.0     0.220     13.6
2029.0     0.222     15.3
2030.0     0.224     17.0
2031.0     0.226     18.7
2032.0     0.227     20.4
2033.0     0.228     22.0
2034.0     0.228     23.6
2035.0     0.229     25.3
2036.0     0.229     26.9
2037.0     0.229     28.5
2038.0     0.228     30.1
2039.0     0.228     31.8
2040.0     0.227     33.4
2041.0     0.226     35.1
2042.0     0.225     36.8
2043.0     0.223     38.5
2044.0     0.222     40.2
2045.0     0.220     41.9
2046.0     0.218     43.7
2047.0     0.216     45.5
2048.0     0.213     47.3
2049.0     0.211     49.2
2050.0     0.209     51.2
2051.0     0.206     53.1
2052.0     0.203     55.2
2053.0     0.200     57.3
2054.0     0.197     59.4
2055.0     0.194     61.6
2056.0     0.191     63.9
2057.0     0.188     66.3
2058.0     0.185     68.7
2059.0     0.181     71.3
2060.0     0.178     73.9
2061.0     0.175     76.6
2062.0     0.172     79.5
2063.0     0.168     82.4
2064.0     0.165     85.5
2065.0     0.162     88.6
2066.0     0.159     91.9
2067.0     0.156     95.4
2068.0     0.153     98.9
2069.0     0.151    102.6

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.