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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:58:42

Orbital Elements for RST4769

WDS:	RST4769	WDS ID/Discoverer
P:	77.570	Orbital period (years)
a:	0.2921	Semi-major axis (arcseconds)
i:	97.34	Inclination (degrees)
Ω:	198.28	Longitude of ascending node (degrees)
T:	1997.210	Epoch of periastron passage (year)
e:	0.3311	Eccentricity
ω:	23.5	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 RST4769

Position:	042028.91-011858.8	Epoch-2000 right ascension and declination
WDS-ID:	04205-0119	WDS designation
Discoverer Code:	RST4769	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27516	HD catalog number
Hipparcos number:	20257	Hipparcos catalog number
V1:	7.59	Magnitude of the primary
V2:	7.63	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2010	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RST4769

WDS 6th Orbit including measures of RST4769

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

Ephemeris of RST4769

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.366     18.9
-------------------------
1987.0     0.129    210.7
1988.0     0.146    208.1
1989.0     0.161    206.1
1990.0     0.174    204.4
1991.0     0.186    202.9
1992.0     0.194    201.6
1993.0     0.199    200.4
1994.0     0.201    199.2
1995.0     0.199    198.0
1996.0     0.192    196.8
1997.0     0.182    195.4
1998.0     0.168    193.9
1999.0     0.150    192.0
2000.0     0.130    189.5
2001.0     0.107    186.1
2002.0     0.082    180.7
2003.0     0.058    170.7
2004.0     0.037    147.8
2005.0     0.030     98.9
2006.0     0.045     60.6
2007.0     0.068     44.9
2008.0     0.093     37.4
2009.0     0.119     33.1
2010.0     0.143     30.3
2011.0     0.167     28.3
2012.0     0.189     26.8
2013.0     0.211     25.6
2014.0     0.231     24.6
2015.0     0.250     23.8
2016.0     0.267     23.1
2017.0     0.283     22.4
2018.0     0.298     21.9
2019.0     0.312     21.3
2020.0     0.324     20.9
2021.0     0.335     20.4
2022.0     0.344     20.0
2023.0     0.353     19.6
2024.0     0.360     19.2
2025.0     0.366     18.9
2026.0     0.371     18.5
2027.0     0.374     18.2
2028.0     0.377     17.9
2029.0     0.378     17.5
2030.0     0.378     17.2
2031.0     0.377     16.8
2032.0     0.375     16.5
2033.0     0.372     16.2
2034.0     0.368     15.8
2035.0     0.363     15.5
2036.0     0.357     15.1
2037.0     0.350     14.7
2038.0     0.342     14.3
2039.0     0.333     13.9
2040.0     0.323     13.5
2041.0     0.312     13.0
2042.0     0.301     12.5
2043.0     0.288     11.9
2044.0     0.275     11.3
2045.0     0.261     10.7
2046.0     0.246      9.9
2047.0     0.230      9.1
2048.0     0.214      8.1
2049.0     0.197      7.0
2050.0     0.179      5.6
2051.0     0.161      4.0
2052.0     0.142      1.9
2053.0     0.123    359.2
2054.0     0.104    355.5
2055.0     0.085    350.1
2056.0     0.067    341.8
2057.0     0.051    327.8
2058.0     0.040    304.0
2059.0     0.039    272.2
2060.0     0.049    246.6
2061.0     0.064    231.3
2062.0     0.082    222.2

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.