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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:21:16

Orbital Elements for RST2884

WDS:	RST2884	WDS ID/Discoverer
P:	75.310	Orbital period (years)
a:	0.212	Semi-major axis (arcseconds)
i:	115.5	Inclination (degrees)
Ω:	179.1	Longitude of ascending node (degrees)
T:	1978.700	Epoch of periastron passage (year)
e:	0.365	Eccentricity
ω:	207.2	Longitude of periastron (degrees)
Start-Year:	1988.0	Year
End-Year:	2062.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST2884

Position:	140220.38-523311.6	Epoch-2000 right ascension and declination
WDS-ID:	14023-5233	WDS designation
Discoverer Code:	RST2884	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	122277	HD catalog number
Hipparcos number:	68575	Hipparcos catalog number
V1:	8.94	Magnitude of the primary
V2:	9.97	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST2884

WDS 6th Orbit including measures of RST2884

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

Ephemeris of RST2884

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.206    153.2
-------------------------
1988.0     0.096    227.1
1989.0     0.110    218.9
1990.0     0.125    212.6
1991.0     0.140    207.7
1992.0     0.154    203.7
1993.0     0.168    200.3
1994.0     0.181    197.5
1995.0     0.194    195.1
1996.0     0.205    192.9
1997.0     0.216    191.0
1998.0     0.226    189.2
1999.0     0.235    187.6
2000.0     0.243    186.1
2001.0     0.250    184.6
2002.0     0.257    183.3
2003.0     0.262    182.0
2004.0     0.267    180.8
2005.0     0.271    179.6
2006.0     0.274    178.4
2007.0     0.276    177.3
2008.0     0.278    176.2
2009.0     0.279    175.1
2010.0     0.279    174.0
2011.0     0.278    172.8
2012.0     0.277    171.7
2013.0     0.275    170.6
2014.0     0.272    169.4
2015.0     0.269    168.3
2016.0     0.265    167.1
2017.0     0.261    165.8
2018.0     0.256    164.5
2019.0     0.250    163.2
2020.0     0.244    161.8
2021.0     0.237    160.3
2022.0     0.230    158.7
2023.0     0.222    157.0
2024.0     0.214    155.2
2025.0     0.206    153.2
2026.0     0.197    151.1
2027.0     0.187    148.8
2028.0     0.178    146.2
2029.0     0.168    143.3
2030.0     0.158    140.1
2031.0     0.149    136.4
2032.0     0.139    132.3
2033.0     0.130    127.5
2034.0     0.121    122.0
2035.0     0.112    115.6
2036.0     0.105    108.3
2037.0     0.100    100.1
2038.0     0.096     91.0
2039.0     0.093     81.4
2040.0     0.094     71.5
2041.0     0.096     61.8
2042.0     0.100     52.8
2043.0     0.105     44.5
2044.0     0.111     37.2
2045.0     0.118     30.6
2046.0     0.125     24.8
2047.0     0.131     19.5
2048.0     0.136     14.6
2049.0     0.139     10.0
2050.0     0.141      5.7
2051.0     0.140      1.3
2052.0     0.137    356.8
2053.0     0.131    352.0
2054.0     0.123    346.7
2055.0     0.112    340.5
2056.0     0.101    332.8
2057.0     0.089    323.2
2058.0     0.078    310.6
2059.0     0.070    294.6
2060.0     0.067    276.0
2061.0     0.071    257.6

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.