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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:58

Orbital Elements for RST5501

WDS:	RST5501	WDS ID/Discoverer
P:	84.660	Orbital period (years)
a:	0.243	Semi-major axis (arcseconds)
i:	120.8	Inclination (degrees)
Ω:	219.1	Longitude of ascending node (degrees)
T:	2004.320	Epoch of periastron passage (year)
e:	0.515	Eccentricity
ω:	310.3	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST5501

Position:	045427.96-031333.3	Epoch-2000 right ascension and declination
WDS-ID:	04545-0314	WDS designation
Discoverer Code:	RST5501	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	31297	HD catalog number
Hipparcos number:	22812	Hipparcos catalog number
V1:	7.29	Magnitude of the primary
V2:	7.46	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for RST5501

WDS 6th Orbit including measures of RST5501

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

Ephemeris of RST5501

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.151    128.2
-------------------------
1983.0     0.295     45.0
1984.0     0.290     43.7
1985.0     0.284     42.4
1986.0     0.278     41.0
1987.0     0.270     39.5
1988.0     0.262     38.0
1989.0     0.252     36.3
1990.0     0.242     34.5
1991.0     0.230     32.5
1992.0     0.218     30.3
1993.0     0.204     27.8
1994.0     0.189     25.0
1995.0     0.173     21.6
1996.0     0.156     17.5
1997.0     0.137     12.3
1998.0     0.118      5.6
1999.0     0.099    356.2
2000.0     0.082    342.6
2001.0     0.069    322.9
2002.0     0.065    297.8
2003.0     0.071    273.5
2004.0     0.084    254.9
2005.0     0.100    241.8
2006.0     0.114    232.1
2007.0     0.126    224.5
2008.0     0.135    218.0
2009.0     0.142    212.3
2010.0     0.146    207.0
2011.0     0.148    201.9
2012.0     0.148    196.9
2013.0     0.148    191.9
2014.0     0.147    186.8
2015.0     0.146    181.6
2016.0     0.144    176.4
2017.0     0.143    171.0
2018.0     0.142    165.6
2019.0     0.141    160.1
2020.0     0.141    154.5
2021.0     0.142    149.0
2022.0     0.143    143.6
2023.0     0.145    138.3
2024.0     0.148    133.1
2025.0     0.151    128.2
2026.0     0.155    123.5
2027.0     0.160    119.0
2028.0     0.165    114.9
2029.0     0.170    110.9
2030.0     0.176    107.2
2031.0     0.182    103.8
2032.0     0.188    100.6
2033.0     0.195     97.6
2034.0     0.201     94.8
2035.0     0.208     92.1
2036.0     0.214     89.7
2037.0     0.221     87.3
2038.0     0.228     85.1
2039.0     0.234     83.1
2040.0     0.240     81.1
2041.0     0.247     79.3
2042.0     0.253     77.5
2043.0     0.259     75.8
2044.0     0.264     74.2
2045.0     0.270     72.6
2046.0     0.275     71.2
2047.0     0.280     69.7
2048.0     0.285     68.3
2049.0     0.289     67.0
2050.0     0.293     65.7
2051.0     0.297     64.4
2052.0     0.300     63.2
2053.0     0.303     62.0
2054.0     0.306     60.8
2055.0     0.308     59.6
2056.0     0.310     58.5
2057.0     0.312     57.3
2058.0     0.313     56.2
2059.0     0.313     55.1
2060.0     0.313     54.0
2061.0     0.313     52.8
2062.0     0.312     51.7
2063.0     0.310     50.6
2064.0     0.308     49.4
2065.0     0.306     48.2
2066.0     0.302     47.1

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.