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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:47:27
WDS:
COU936
WDS ID/Discoverer
P:
180.500
Orbital period (years)
a:
0.565
Semi-major axis (arcseconds)
i:
108.6
Inclination (degrees)
Ω:
45.0
Longitude of ascending node (degrees)
T:
1945.300
Epoch of periastron passage (year)
e:
0.738
Eccentricity
ω:
8.4
Longitude of periastron (degrees)
Start-Year:
1935.0
Year
End-Year:
2115.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
092900.67+191718.6
Epoch-2000 right ascension and declination
WDS-ID:
09290+1917
WDS designation
Discoverer Code:
COU936
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
81899
HD catalog number
Hipparcos number:
46501
Hipparcos catalog number
V1:
8.42
Magnitude of the primary
V2:
9.96
Magnitude of the secondary
Equinox:
Equinox
Date:
Date of last observation
Orbit grade:
5
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 0.971 223.8
-------------------------
1935.0 0.114 160.2
1936.0 0.100 148.1
1937.0 0.091 133.0
1938.0 0.089 115.8
1939.0 0.093 99.1
1940.0 0.103 84.7
1941.0 0.116 73.3
1942.0 0.130 64.2
1943.0 0.142 56.8
1944.0 0.148 50.4
1945.0 0.148 44.2
1946.0 0.140 37.7
1947.0 0.125 29.9
1948.0 0.106 19.6
1949.0 0.087 4.7
1950.0 0.075 343.4
1951.0 0.073 317.6
1952.0 0.085 295.1
1953.0 0.104 279.4
1954.0 0.128 269.1
1955.0 0.153 262.1
1956.0 0.179 257.2
1957.0 0.205 253.5
1958.0 0.231 250.6
1959.0 0.256 248.3
1960.0 0.281 246.3
1961.0 0.305 244.7
1962.0 0.328 243.4
1963.0 0.351 242.2
1964.0 0.373 241.1
1965.0 0.394 240.2
1966.0 0.415 239.4
1967.0 0.436 238.6
1968.0 0.455 237.9
1969.0 0.475 237.3
1970.0 0.493 236.7
1971.0 0.512 236.2
1972.0 0.529 235.7
1973.0 0.546 235.2
1974.0 0.563 234.7
1975.0 0.579 234.3
1976.0 0.595 233.9
1977.0 0.611 233.5
1978.0 0.625 233.2
1979.0 0.640 232.8
1980.0 0.654 232.5
1981.0 0.668 232.2
1982.0 0.681 231.9
1983.0 0.694 231.6
1984.0 0.707 231.3
1985.0 0.719 231.1
1986.0 0.731 230.8
1987.0 0.742 230.6
1988.0 0.754 230.3
1989.0 0.765 230.1
1990.0 0.775 229.8
1991.0 0.785 229.6
1992.0 0.795 229.4
1993.0 0.805 229.2
1994.0 0.814 229.0
1995.0 0.823 228.8
1996.0 0.832 228.6
1997.0 0.840 228.4
1998.0 0.848 228.2
1999.0 0.856 228.0
2000.0 0.864 227.8
2001.0 0.871 227.6
2002.0 0.878 227.4
2003.0 0.885 227.3
2004.0 0.891 227.1
2005.0 0.898 226.9
2006.0 0.904 226.8
2007.0 0.909 226.6
2008.0 0.915 226.4
2009.0 0.920 226.3
2010.0 0.925 226.1
2011.0 0.930 225.9
2012.0 0.934 225.8
2013.0 0.938 225.6
2014.0 0.942 225.5
2015.0 0.946 225.3
2016.0 0.950 225.2
2017.0 0.953 225.0
2018.0 0.956 224.9
2019.0 0.959 224.7
2020.0 0.961 224.6
2021.0 0.964 224.4
2022.0 0.966 224.3
2023.0 0.968 224.1
2024.0 0.969 224.0
2025.0 0.971 223.8
2026.0 0.972 223.7
2027.0 0.973 223.5
2028.0 0.974 223.4
2029.0 0.974 223.2
2030.0 0.975 223.1
2031.0 0.975 223.0
2032.0 0.975 222.8
2033.0 0.974 222.7
2034.0 0.974 222.5
2035.0 0.973 222.4
2036.0 0.972 222.2
2037.0 0.971 222.1
2038.0 0.969 221.9
2039.0 0.968 221.8
2040.0 0.966 221.7
2041.0 0.964 221.5
2042.0 0.962 221.4
2043.0 0.959 221.2
2044.0 0.956 221.1
2045.0 0.953 220.9
2046.0 0.950 220.8
2047.0 0.947 220.6
2048.0 0.943 220.5
2049.0 0.939 220.3
2050.0 0.935 220.1
2051.0 0.931 220.0
2052.0 0.927 219.8
2053.0 0.922 219.7
2054.0 0.917 219.5
2055.0 0.912 219.3
2056.0 0.906 219.2
2057.0 0.901 219.0
2058.0 0.895 218.8
2059.0 0.889 218.7
2060.0 0.883 218.5
2061.0 0.876 218.3
2062.0 0.869 218.1
2063.0 0.862 218.0
2064.0 0.855 217.8
2065.0 0.848 217.6
2066.0 0.840 217.4
2067.0 0.832 217.2
2068.0 0.824 217.0
2069.0 0.815 216.8
2070.0 0.807 216.6
2071.0 0.798 216.4
2072.0 0.789 216.1
2073.0 0.779 215.9
2074.0 0.769 215.7
2075.0 0.760 215.5
2076.0 0.749 215.2
2077.0 0.739 215.0
2078.0 0.728 214.7
2079.0 0.717 214.5
2080.0 0.706 214.2
2081.0 0.694 213.9
2082.0 0.683 213.6
2083.0 0.670 213.3
2084.0 0.658 213.0
2085.0 0.645 212.7
2086.0 0.632 212.3
2087.0 0.619 212.0
2088.0 0.606 211.6
2089.0 0.592 211.2
2090.0 0.577 210.8
2091.0 0.563 210.4
2092.0 0.548 210.0
2093.0 0.533 209.5
2094.0 0.517 209.0
2095.0 0.502 208.5
2096.0 0.485 207.9
2097.0 0.469 207.3
2098.0 0.452 206.7
2099.0 0.435 206.0
2100.0 0.417 205.2
2101.0 0.399 204.4
2102.0 0.381 203.5
2103.0 0.362 202.5
2104.0 0.343 201.4
2105.0 0.324 200.2
2106.0 0.304 198.8
2107.0 0.284 197.2
2108.0 0.264 195.4
2109.0 0.243 193.2
2110.0 0.222 190.7
2111.0 0.201 187.6
2112.0 0.181 183.9
2113.0 0.160 179.1
2114.0 0.141 173.1
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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