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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 16:22:59
WDS:
A921AB
WDS ID/Discoverer
P:
120.470
Orbital period (years)
a:
0.221
Semi-major axis (arcseconds)
i:
59.6
Inclination (degrees)
Ω:
140.3
Longitude of ascending node (degrees)
T:
1982.400
Epoch of periastron passage (year)
e:
0.696
Eccentricity
ω:
96.6
Longitude of periastron (degrees)
Start-Year:
1965.0
Year
End-Year:
2085.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
004909.10+571937.6
Epoch-2000 right ascension and declination
WDS-ID:
00492+5720
WDS designation
Discoverer Code:
A921AB
Discover designation and components
ADS number:
674
Aitken Double Star catalog
HD number:
236538
HD catalog number
Hipparcos number:
.
Hipparcos catalog number
V1:
9.0
Magnitude of the primary
V2:
9.5
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2007
Date of last observation
Orbit grade:
3
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.182 36.4
-------------------------
1965.0 0.190 118.1
1966.0 0.187 119.6
1967.0 0.183 121.2
1968.0 0.179 122.8
1969.0 0.174 124.5
1970.0 0.169 126.3
1971.0 0.163 128.2
1972.0 0.157 130.3
1973.0 0.149 132.5
1974.0 0.141 135.1
1975.0 0.132 137.9
1976.0 0.121 141.2
1977.0 0.109 145.3
1978.0 0.095 150.4
1979.0 0.079 157.5
1980.0 0.061 168.5
1981.0 0.044 188.2
1982.0 0.034 225.1
1983.0 0.040 266.6
1984.0 0.056 290.8
1985.0 0.073 303.9
1986.0 0.088 312.2
1987.0 0.101 318.2
1988.0 0.112 322.9
1989.0 0.121 326.8
1990.0 0.129 330.2
1991.0 0.135 333.3
1992.0 0.141 336.1
1993.0 0.146 338.6
1994.0 0.150 341.0
1995.0 0.154 343.3
1996.0 0.157 345.5
1997.0 0.160 347.7
1998.0 0.162 349.7
1999.0 0.164 351.7
2000.0 0.166 353.6
2001.0 0.168 355.5
2002.0 0.169 357.4
2003.0 0.170 359.3
2004.0 0.171 1.1
2005.0 0.172 2.9
2006.0 0.173 4.6
2007.0 0.174 6.4
2008.0 0.175 8.1
2009.0 0.175 9.9
2010.0 0.176 11.6
2011.0 0.176 13.3
2012.0 0.177 15.0
2013.0 0.177 16.7
2014.0 0.178 18.4
2015.0 0.178 20.1
2016.0 0.178 21.7
2017.0 0.179 23.4
2018.0 0.179 25.0
2019.0 0.180 26.7
2020.0 0.180 28.3
2021.0 0.180 30.0
2022.0 0.181 31.6
2023.0 0.181 33.2
2024.0 0.182 34.8
2025.0 0.182 36.4
2026.0 0.182 38.0
2027.0 0.183 39.6
2028.0 0.183 41.2
2029.0 0.184 42.8
2030.0 0.184 44.3
2031.0 0.185 45.9
2032.0 0.186 47.4
2033.0 0.186 49.0
2034.0 0.187 50.5
2035.0 0.188 52.0
2036.0 0.188 53.5
2037.0 0.189 55.0
2038.0 0.190 56.5
2039.0 0.190 57.9
2040.0 0.191 59.4
2041.0 0.192 60.8
2042.0 0.193 62.3
2043.0 0.194 63.7
2044.0 0.194 65.1
2045.0 0.195 66.5
2046.0 0.196 67.9
2047.0 0.197 69.3
2048.0 0.198 70.6
2049.0 0.199 72.0
2050.0 0.199 73.3
2051.0 0.200 74.6
2052.0 0.201 76.0
2053.0 0.202 77.3
2054.0 0.203 78.6
2055.0 0.203 79.9
2056.0 0.204 81.1
2057.0 0.205 82.4
2058.0 0.205 83.7
2059.0 0.206 84.9
2060.0 0.207 86.2
2061.0 0.207 87.4
2062.0 0.208 88.6
2063.0 0.208 89.9
2064.0 0.209 91.1
2065.0 0.209 92.3
2066.0 0.209 93.5
2067.0 0.210 94.7
2068.0 0.210 95.9
2069.0 0.210 97.1
2070.0 0.210 98.3
2071.0 0.210 99.5
2072.0 0.209 100.7
2073.0 0.209 102.0
2074.0 0.209 103.2
2075.0 0.208 104.4
2076.0 0.207 105.6
2077.0 0.206 106.9
2078.0 0.205 108.1
2079.0 0.204 109.4
2080.0 0.203 110.7
2081.0 0.201 112.0
2082.0 0.199 113.3
2083.0 0.197 114.6
2084.0 0.194 116.0
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 .
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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