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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:55:50
WDS:
COU1006
WDS ID/Discoverer
P:
221.000
Orbital period (years)
a:
0.743
Semi-major axis (arcseconds)
i:
52.2
Inclination (degrees)
Ω:
16.6
Longitude of ascending node (degrees)
T:
1980.200
Epoch of periastron passage (year)
e:
0.384
Eccentricity
ω:
201.1
Longitude of periastron (degrees)
Start-Year:
1915.0
Year
End-Year:
2135.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
181258.00+331753.9
Epoch-2000 right ascension and declination
WDS-ID:
18130+3318
WDS designation
Discoverer Code:
COU1006
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
.
HD catalog number
Hipparcos number:
89268
Hipparcos catalog number
V1:
9.23
Magnitude of the primary
V2:
11.29
Magnitude of the secondary
Equinox:
Equinox
Date:
2009
Date of last observation
Orbit grade:
5
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
Flags
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.652 347.8
-------------------------
1915.0 0.660 63.2
1916.0 0.650 64.4
1917.0 0.640 65.6
1918.0 0.630 66.8
1919.0 0.620 68.2
1920.0 0.610 69.5
1921.0 0.600 70.9
1922.0 0.590 72.3
1923.0 0.581 73.8
1924.0 0.571 75.3
1925.0 0.561 76.9
1926.0 0.552 78.6
1927.0 0.543 80.3
1928.0 0.534 82.0
1929.0 0.525 83.8
1930.0 0.516 85.7
1931.0 0.508 87.7
1932.0 0.500 89.7
1933.0 0.492 91.7
1934.0 0.484 93.9
1935.0 0.477 96.1
1936.0 0.470 98.3
1937.0 0.464 100.7
1938.0 0.458 103.1
1939.0 0.453 105.5
1940.0 0.448 108.0
1941.0 0.443 110.6
1942.0 0.439 113.2
1943.0 0.436 115.9
1944.0 0.433 118.6
1945.0 0.431 121.3
1946.0 0.429 124.1
1947.0 0.427 126.8
1948.0 0.427 129.6
1949.0 0.427 132.4
1950.0 0.427 135.2
1951.0 0.428 138.0
1952.0 0.429 140.8
1953.0 0.431 143.5
1954.0 0.433 146.3
1955.0 0.435 149.0
1956.0 0.438 151.6
1957.0 0.441 154.3
1958.0 0.444 156.9
1959.0 0.447 159.4
1960.0 0.450 162.0
1961.0 0.454 164.5
1962.0 0.457 166.9
1963.0 0.460 169.3
1964.0 0.463 171.7
1965.0 0.466 174.1
1966.0 0.468 176.4
1967.0 0.470 178.7
1968.0 0.472 181.0
1969.0 0.473 183.3
1970.0 0.473 185.6
1971.0 0.473 187.8
1972.0 0.472 190.1
1973.0 0.471 192.4
1974.0 0.469 194.7
1975.0 0.466 197.0
1976.0 0.462 199.4
1977.0 0.458 201.8
1978.0 0.452 204.3
1979.0 0.447 206.8
1980.0 0.440 209.4
1981.0 0.433 212.0
1982.0 0.425 214.8
1983.0 0.417 217.7
1984.0 0.409 220.7
1985.0 0.400 223.8
1986.0 0.392 227.0
1987.0 0.383 230.4
1988.0 0.375 233.9
1989.0 0.366 237.7
1990.0 0.359 241.5
1991.0 0.352 245.6
1992.0 0.346 249.7
1993.0 0.341 254.1
1994.0 0.337 258.5
1995.0 0.334 263.0
1996.0 0.332 267.6
1997.0 0.332 272.3
1998.0 0.333 276.9
1999.0 0.336 281.4
2000.0 0.340 285.8
2001.0 0.346 290.2
2002.0 0.352 294.4
2003.0 0.360 298.4
2004.0 0.369 302.2
2005.0 0.379 305.8
2006.0 0.390 309.3
2007.0 0.402 312.5
2008.0 0.414 315.6
2009.0 0.427 318.5
2010.0 0.440 321.2
2011.0 0.453 323.7
2012.0 0.467 326.1
2013.0 0.481 328.4
2014.0 0.496 330.5
2015.0 0.510 332.6
2016.0 0.524 334.5
2017.0 0.539 336.3
2018.0 0.553 338.0
2019.0 0.568 339.6
2020.0 0.582 341.1
2021.0 0.596 342.6
2022.0 0.611 344.0
2023.0 0.625 345.3
2024.0 0.638 346.6
2025.0 0.652 347.8
2026.0 0.665 349.0
2027.0 0.679 350.1
2028.0 0.692 351.2
2029.0 0.704 352.2
2030.0 0.717 353.3
2031.0 0.729 354.2
2032.0 0.741 355.2
2033.0 0.753 356.1
2034.0 0.765 357.0
2035.0 0.776 357.8
2036.0 0.787 358.7
2037.0 0.798 359.5
2038.0 0.808 0.3
2039.0 0.819 1.0
2040.0 0.829 1.8
2041.0 0.838 2.5
2042.0 0.848 3.2
2043.0 0.857 3.9
2044.0 0.866 4.6
2045.0 0.874 5.3
2046.0 0.883 5.9
2047.0 0.891 6.6
2048.0 0.898 7.2
2049.0 0.906 7.8
2050.0 0.913 8.5
2051.0 0.920 9.1
2052.0 0.927 9.7
2053.0 0.933 10.3
2054.0 0.939 10.8
2055.0 0.945 11.4
2056.0 0.950 12.0
2057.0 0.956 12.5
2058.0 0.961 13.1
2059.0 0.965 13.6
2060.0 0.970 14.2
2061.0 0.974 14.7
2062.0 0.978 15.3
2063.0 0.982 15.8
2064.0 0.985 16.3
2065.0 0.988 16.8
2066.0 0.991 17.4
2067.0 0.994 17.9
2068.0 0.996 18.4
2069.0 0.999 18.9
2070.0 1.000 19.4
2071.0 1.002 19.9
2072.0 1.004 20.4
2073.0 1.005 20.9
2074.0 1.006 21.4
2075.0 1.006 21.9
2076.0 1.007 22.4
2077.0 1.007 22.9
2078.0 1.007 23.4
2079.0 1.007 23.9
2080.0 1.006 24.4
2081.0 1.005 24.9
2082.0 1.004 25.4
2083.0 1.003 26.0
2084.0 1.002 26.5
2085.0 1.000 27.0
2086.0 0.998 27.5
2087.0 0.996 28.0
2088.0 0.993 28.5
2089.0 0.991 29.0
2090.0 0.988 29.5
2091.0 0.985 30.1
2092.0 0.982 30.6
2093.0 0.978 31.1
2094.0 0.974 31.7
2095.0 0.971 32.2
2096.0 0.966 32.7
2097.0 0.962 33.3
2098.0 0.958 33.8
2099.0 0.953 34.4
2100.0 0.948 35.0
2101.0 0.943 35.5
2102.0 0.937 36.1
2103.0 0.932 36.7
2104.0 0.926 37.3
2105.0 0.920 37.9
2106.0 0.914 38.5
2107.0 0.908 39.1
2108.0 0.901 39.7
2109.0 0.895 40.3
2110.0 0.888 41.0
2111.0 0.881 41.6
2112.0 0.874 42.3
2113.0 0.866 43.0
2114.0 0.859 43.6
2115.0 0.851 44.3
2116.0 0.843 45.1
2117.0 0.835 45.8
2118.0 0.827 46.5
2119.0 0.819 47.3
2120.0 0.810 48.0
2121.0 0.802 48.8
2122.0 0.793 49.6
2123.0 0.784 50.4
2124.0 0.775 51.3
2125.0 0.766 52.1
2126.0 0.757 53.0
2127.0 0.748 53.9
2128.0 0.738 54.8
2129.0 0.729 55.8
2130.0 0.719 56.7
2131.0 0.709 57.7
2132.0 0.700 58.8
2133.0 0.690 59.8
2134.0 0.680 60.9
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Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0 .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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