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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:00:59
WDS:
COU567
WDS ID/Discoverer
P:
135.400
Orbital period (years)
a:
0.187
Semi-major axis (arcseconds)
i:
109.8
Inclination (degrees)
Ω:
5.3
Longitude of ascending node (degrees)
T:
2002.000
Epoch of periastron passage (year)
e:
0.84
Eccentricity
ω:
108.7
Longitude of periastron (degrees)
Start-Year:
1958.0
Year
End-Year:
2092.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
042948.12+174039.4
Epoch-2000 right ascension and declination
WDS-ID:
04298+1741
WDS designation
Discoverer Code:
COU567
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
28436
HD catalog number
Hipparcos number:
20971
Hipparcos catalog number
V1:
9.37
Magnitude of the primary
V2:
8.09
Magnitude of the secondary
Equinox:
Equinox
Date:
Date of last observation
Orbit grade:
4
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.082 112.1
-------------------------
1958.0 0.181 36.3
1959.0 0.181 35.8
1960.0 0.181 35.3
1961.0 0.182 34.7
1962.0 0.182 34.2
1963.0 0.182 33.7
1964.0 0.182 33.2
1965.0 0.182 32.7
1966.0 0.182 32.2
1967.0 0.181 31.6
1968.0 0.181 31.1
1969.0 0.181 30.6
1970.0 0.180 30.1
1971.0 0.179 29.5
1972.0 0.179 29.0
1973.0 0.178 28.5
1974.0 0.177 27.9
1975.0 0.176 27.4
1976.0 0.175 26.8
1977.0 0.173 26.3
1978.0 0.172 25.7
1979.0 0.170 25.1
1980.0 0.168 24.5
1981.0 0.166 23.9
1982.0 0.164 23.3
1983.0 0.161 22.6
1984.0 0.159 21.9
1985.0 0.156 21.3
1986.0 0.153 20.5
1987.0 0.149 19.8
1988.0 0.145 19.0
1989.0 0.141 18.2
1990.0 0.136 17.3
1991.0 0.131 16.3
1992.0 0.126 15.3
1993.0 0.120 14.2
1994.0 0.113 12.9
1995.0 0.105 11.5
1996.0 0.096 9.8
1997.0 0.086 7.7
1998.0 0.074 5.1
1999.0 0.060 1.3
2000.0 0.043 354.7
2001.0 0.021 336.0
2002.0 0.014 230.3
2003.0 0.034 192.9
2004.0 0.047 182.4
2005.0 0.056 176.1
2006.0 0.061 171.1
2007.0 0.065 166.9
2008.0 0.068 163.0
2009.0 0.070 159.4
2010.0 0.071 156.0
2011.0 0.072 152.7
2012.0 0.073 149.5
2013.0 0.074 146.3
2014.0 0.075 143.2
2015.0 0.075 140.1
2016.0 0.076 137.1
2017.0 0.076 134.2
2018.0 0.077 131.2
2019.0 0.077 128.4
2020.0 0.078 125.5
2021.0 0.079 122.7
2022.0 0.079 120.0
2023.0 0.080 117.3
2024.0 0.081 114.7
2025.0 0.082 112.1
2026.0 0.083 109.6
2027.0 0.084 107.2
2028.0 0.085 104.8
2029.0 0.087 102.5
2030.0 0.088 100.3
2031.0 0.089 98.1
2032.0 0.091 96.0
2033.0 0.092 94.0
2034.0 0.094 92.0
2035.0 0.095 90.1
2036.0 0.097 88.2
2037.0 0.099 86.4
2038.0 0.100 84.7
2039.0 0.102 83.0
2040.0 0.104 81.4
2041.0 0.105 79.9
2042.0 0.107 78.3
2043.0 0.109 76.9
2044.0 0.111 75.5
2045.0 0.113 74.1
2046.0 0.115 72.8
2047.0 0.116 71.5
2048.0 0.118 70.2
2049.0 0.120 69.0
2050.0 0.122 67.9
2051.0 0.124 66.7
2052.0 0.126 65.6
2053.0 0.127 64.6
2054.0 0.129 63.5
2055.0 0.131 62.5
2056.0 0.133 61.6
2057.0 0.135 60.6
2058.0 0.137 59.7
2059.0 0.138 58.8
2060.0 0.140 57.9
2061.0 0.142 57.0
2062.0 0.144 56.2
2063.0 0.145 55.4
2064.0 0.147 54.6
2065.0 0.149 53.8
2066.0 0.150 53.0
2067.0 0.152 52.3
2068.0 0.153 51.5
2069.0 0.155 50.8
2070.0 0.157 50.1
2071.0 0.158 49.4
2072.0 0.159 48.7
2073.0 0.161 48.1
2074.0 0.162 47.4
2075.0 0.164 46.8
2076.0 0.165 46.1
2077.0 0.166 45.5
2078.0 0.167 44.9
2079.0 0.169 44.3
2080.0 0.170 43.7
2081.0 0.171 43.1
2082.0 0.172 42.5
2083.0 0.173 42.0
2084.0 0.174 41.4
2085.0 0.175 40.8
2086.0 0.176 40.3
2087.0 0.177 39.7
2088.0 0.177 39.2
2089.0 0.178 38.6
2090.0 0.179 38.1
2091.0 0.179 37.6
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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