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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:05:32

Orbital Elements for RST4944
WDS: RST4944 WDS ID/Discoverer
P: 120.500 Orbital period (years)
a: 0.215 Semi-major axis (arcseconds)
i: 134.8 Inclination (degrees)
Ω: 174.4 Longitude of ascending node (degrees)
T: 2025.580 Epoch of periastron passage (year)
e: 0.64 Eccentricity
ω: 51.7 Longitude of periastron (degrees)
Start-Year: 1965.0 Year
End-Year: 2085.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RST4944
Position: 112753.73-014159.8 Epoch-2000 right ascension and declination
WDS-ID: 11279-0142 WDS designation
Discoverer Code: RST4944 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 99651 HD catalog number
Hipparcos number: 55941 Hipparcos catalog number
V1: 6.62 Magnitude of the primary
V2: 8.22 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for RST4944



WDS 6th Orbit including measures of RST4944

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


Ephemeris of RST4944
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.069    142.5
-------------------------
1965.0     0.293    312.9
1966.0     0.292    312.1
1967.0     0.290    311.2
1968.0     0.288    310.3
1969.0     0.286    309.4
1970.0     0.284    308.5
1971.0     0.282    307.5
1972.0     0.280    306.6
1973.0     0.278    305.6
1974.0     0.275    304.7
1975.0     0.273    303.7
1976.0     0.270    302.7
1977.0     0.268    301.6
1978.0     0.265    300.6
1979.0     0.262    299.5
1980.0     0.259    298.4
1981.0     0.256    297.3
1982.0     0.253    296.1
1983.0     0.250    294.9
1984.0     0.246    293.7
1985.0     0.243    292.5
1986.0     0.240    291.2
1987.0     0.236    289.9
1988.0     0.233    288.5
1989.0     0.229    287.1
1990.0     0.225    285.6
1991.0     0.222    284.1
1992.0     0.218    282.6
1993.0     0.214    281.0
1994.0     0.210    279.3
1995.0     0.206    277.6
1996.0     0.202    275.8
1997.0     0.198    273.9
1998.0     0.194    272.0
1999.0     0.190    270.0
2000.0     0.186    267.8
2001.0     0.182    265.6
2002.0     0.178    263.3
2003.0     0.174    260.9
2004.0     0.170    258.4
2005.0     0.166    255.7
2006.0     0.162    252.9
2007.0     0.158    250.0
2008.0     0.154    246.9
2009.0     0.150    243.6
2010.0     0.146    240.2
2011.0     0.142    236.6
2012.0     0.138    232.8
2013.0     0.134    228.8
2014.0     0.131    224.5
2015.0     0.127    220.0
2016.0     0.123    215.2
2017.0     0.119    210.1
2018.0     0.115    204.7
2019.0     0.110    198.8
2020.0     0.105    192.4
2021.0     0.100    185.2
2022.0     0.093    177.2
2023.0     0.086    167.9
2024.0     0.077    156.6
2025.0     0.069    142.5
2026.0     0.062    124.7
2027.0     0.058    103.5
2028.0     0.060     81.8
2029.0     0.067     63.1
2030.0     0.078     48.6
2031.0     0.090     37.8
2032.0     0.102     29.6
2033.0     0.115     23.2
2034.0     0.127     18.1
2035.0     0.138     13.8
2036.0     0.149     10.2
2037.0     0.160      7.1
2038.0     0.170      4.3
2039.0     0.179      1.9
2040.0     0.188    359.7
2041.0     0.197    357.6
2042.0     0.204    355.8
2043.0     0.212    354.1
2044.0     0.219    352.4
2045.0     0.226    350.9
2046.0     0.232    349.5
2047.0     0.238    348.1
2048.0     0.243    346.9
2049.0     0.248    345.6
2050.0     0.253    344.4
2051.0     0.258    343.3
2052.0     0.262    342.2
2053.0     0.266    341.1
2054.0     0.270    340.1
2055.0     0.274    339.1
2056.0     0.277    338.1
2057.0     0.280    337.1
2058.0     0.283    336.2
2059.0     0.286    335.2
2060.0     0.288    334.3
2061.0     0.290    333.4
2062.0     0.292    332.6
2063.0     0.294    331.7
2064.0     0.296    330.8
2065.0     0.297    330.0
2066.0     0.298    329.1
2067.0     0.299    328.3
2068.0     0.300    327.5
2069.0     0.301    326.6
2070.0     0.302    325.8
2071.0     0.302    325.0
2072.0     0.303    324.2
2073.0     0.303    323.4
2074.0     0.303    322.5
2075.0     0.303    321.7
2076.0     0.302    320.9
2077.0     0.302    320.1
2078.0     0.301    319.3
2079.0     0.301    318.4
2080.0     0.300    317.6
2081.0     0.299    316.8
2082.0     0.298    315.9
2083.0     0.297    315.1
2084.0     0.296    314.2






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0.


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.


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