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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:01:28

Orbital Elements for RST5456

WDS:	RST5456	WDS ID/Discoverer
P:	77.500	Orbital period (years)
a:	0.169	Semi-major axis (arcseconds)
i:	135.0	Inclination (degrees)
Ω:	120.7	Longitude of ascending node (degrees)
T:	1979.000	Epoch of periastron passage (year)
e:	0.17	Eccentricity
ω:	154.0	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 RST5456

Position:	185641.04-510138.4	Epoch-2000 right ascension and declination
WDS-ID:	18567-5102	WDS designation
Discoverer Code:	RST5456	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	175146	HD catalog number
Hipparcos number:	92991	Hipparcos catalog number
V1:	8.75	Magnitude of the primary
V2:	10.14	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for RST5456

WDS 6th Orbit including measures of RST5456

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

Ephemeris of RST5456

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.194    121.7
-------------------------
1987.0     0.141    282.3
1988.0     0.140    277.7
1989.0     0.138    272.9
1990.0     0.136    267.9
1991.0     0.134    262.8
1992.0     0.131    257.6
1993.0     0.129    252.1
1994.0     0.127    246.5
1995.0     0.125    240.7
1996.0     0.124    234.7
1997.0     0.124    228.7
1998.0     0.124    222.6
1999.0     0.124    216.6
2000.0     0.125    210.7
2001.0     0.127    204.9
2002.0     0.130    199.3
2003.0     0.132    193.9
2004.0     0.136    188.7
2005.0     0.139    183.8
2006.0     0.143    179.2
2007.0     0.148    174.9
2008.0     0.152    170.7
2009.0     0.156    166.8
2010.0     0.161    163.1
2011.0     0.165    159.6
2012.0     0.169    156.3
2013.0     0.173    153.2
2014.0     0.177    150.1
2015.0     0.180    147.2
2016.0     0.183    144.4
2017.0     0.186    141.7
2018.0     0.189    139.1
2019.0     0.191    136.5
2020.0     0.192    134.0
2021.0     0.194    131.5
2022.0     0.194    129.1
2023.0     0.195    126.6
2024.0     0.195    124.2
2025.0     0.194    121.7
2026.0     0.193    119.3
2027.0     0.191    116.8
2028.0     0.189    114.2
2029.0     0.187    111.6
2030.0     0.184    108.9
2031.0     0.180    106.1
2032.0     0.176    103.2
2033.0     0.172    100.2
2034.0     0.167     97.0
2035.0     0.162     93.6
2036.0     0.157     89.9
2037.0     0.151     86.1
2038.0     0.146     81.9
2039.0     0.140     77.3
2040.0     0.134     72.4
2041.0     0.128     67.0
2042.0     0.123     61.1
2043.0     0.118     54.8
2044.0     0.114     47.9
2045.0     0.111     40.6
2046.0     0.108     32.9
2047.0     0.107     24.9
2048.0     0.107     16.9
2049.0     0.108      8.9
2050.0     0.110      1.1
2051.0     0.113    353.6
2052.0     0.116    346.5
2053.0     0.120    339.9
2054.0     0.124    333.7
2055.0     0.128    327.9
2056.0     0.132    322.4
2057.0     0.135    317.2
2058.0     0.138    312.2
2059.0     0.140    307.4
2060.0     0.142    302.8
2061.0     0.143    298.2
2062.0     0.143    293.7

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.