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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:19:10
WDS:
STF1768AB
WDS ID/Discoverer
P:
244.980
Orbital period (years)
a:
1.00584
Semi-major axis (arcseconds)
i:
159.53
Inclination (degrees)
Ω:
64.847
Longitude of ascending node (degrees)
T:
1865.414
Epoch of periastron passage (year)
e:
0.83265
Eccentricity
ω:
140.894
Longitude of periastron (degrees)
Start-Year:
1903.0
Year
End-Year:
2147.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
133727.70+361741.4
Epoch-2000 right ascension and declination
WDS-ID:
13375+3618
WDS designation
Discoverer Code:
STF1768AB
Discover designation and components
ADS number:
8974
Aitken Double Star catalog
HD number:
118623
HD catalog number
Hipparcos number:
66458
Hipparcos catalog number
V1:
4.98
Magnitude of the primary
V2:
6.95
Magnitude of the secondary
Equinox:
Equinox
Date:
2015
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 1.702 93.0
-------------------------
1903.0 1.116 130.1
1904.0 1.134 129.5
1905.0 1.151 128.9
1906.0 1.168 128.3
1907.0 1.184 127.8
1908.0 1.200 127.2
1909.0 1.216 126.7
1910.0 1.232 126.2
1911.0 1.247 125.7
1912.0 1.262 125.2
1913.0 1.277 124.7
1914.0 1.291 124.2
1915.0 1.305 123.8
1916.0 1.319 123.3
1917.0 1.333 122.9
1918.0 1.347 122.5
1919.0 1.360 122.1
1920.0 1.373 121.6
1921.0 1.385 121.2
1922.0 1.398 120.8
1923.0 1.410 120.4
1924.0 1.422 120.1
1925.0 1.434 119.7
1926.0 1.446 119.3
1927.0 1.457 118.9
1928.0 1.468 118.6
1929.0 1.479 118.2
1930.0 1.490 117.9
1931.0 1.500 117.5
1932.0 1.511 117.2
1933.0 1.521 116.9
1934.0 1.531 116.5
1935.0 1.540 116.2
1936.0 1.550 115.9
1937.0 1.559 115.6
1938.0 1.568 115.2
1939.0 1.577 114.9
1940.0 1.586 114.6
1941.0 1.594 114.3
1942.0 1.603 114.0
1943.0 1.611 113.7
1944.0 1.619 113.4
1945.0 1.627 113.1
1946.0 1.634 112.8
1947.0 1.641 112.5
1948.0 1.649 112.3
1949.0 1.656 112.0
1950.0 1.663 111.7
1951.0 1.669 111.4
1952.0 1.676 111.1
1953.0 1.682 110.9
1954.0 1.688 110.6
1955.0 1.694 110.3
1956.0 1.700 110.1
1957.0 1.706 109.8
1958.0 1.711 109.5
1959.0 1.716 109.3
1960.0 1.722 109.0
1961.0 1.726 108.7
1962.0 1.731 108.5
1963.0 1.736 108.2
1964.0 1.740 108.0
1965.0 1.745 107.7
1966.0 1.749 107.5
1967.0 1.753 107.2
1968.0 1.756 107.0
1969.0 1.760 106.7
1970.0 1.764 106.5
1971.0 1.767 106.2
1972.0 1.770 106.0
1973.0 1.773 105.7
1974.0 1.776 105.5
1975.0 1.778 105.2
1976.0 1.781 105.0
1977.0 1.783 104.8
1978.0 1.785 104.5
1979.0 1.787 104.3
1980.0 1.789 104.0
1981.0 1.791 103.8
1982.0 1.792 103.5
1983.0 1.794 103.3
1984.0 1.795 103.1
1985.0 1.796 102.8
1986.0 1.797 102.6
1987.0 1.797 102.4
1988.0 1.798 102.1
1989.0 1.798 101.9
1990.0 1.799 101.6
1991.0 1.799 101.4
1992.0 1.799 101.2
1993.0 1.798 100.9
1994.0 1.798 100.7
1995.0 1.797 100.4
1996.0 1.797 100.2
1997.0 1.796 100.0
1998.0 1.795 99.7
1999.0 1.793 99.5
2000.0 1.792 99.2
2001.0 1.790 99.0
2002.0 1.789 98.8
2003.0 1.787 98.5
2004.0 1.785 98.3
2005.0 1.782 98.0
2006.0 1.780 97.8
2007.0 1.778 97.6
2008.0 1.775 97.3
2009.0 1.772 97.1
2010.0 1.769 96.8
2011.0 1.766 96.6
2012.0 1.762 96.3
2013.0 1.759 96.1
2014.0 1.755 95.8
2015.0 1.751 95.6
2016.0 1.747 95.3
2017.0 1.743 95.1
2018.0 1.738 94.8
2019.0 1.734 94.6
2020.0 1.729 94.3
2021.0 1.724 94.0
2022.0 1.719 93.8
2023.0 1.713 93.5
2024.0 1.708 93.3
2025.0 1.702 93.0
2026.0 1.696 92.7
2027.0 1.690 92.5
2028.0 1.684 92.2
2029.0 1.678 91.9
2030.0 1.671 91.6
2031.0 1.664 91.4
2032.0 1.657 91.1
2033.0 1.650 90.8
2034.0 1.642 90.5
2035.0 1.635 90.2
2036.0 1.627 89.9
2037.0 1.619 89.6
2038.0 1.611 89.3
2039.0 1.602 89.0
2040.0 1.594 88.7
2041.0 1.585 88.4
2042.0 1.576 88.1
2043.0 1.567 87.8
2044.0 1.557 87.5
2045.0 1.548 87.2
2046.0 1.538 86.9
2047.0 1.528 86.5
2048.0 1.517 86.2
2049.0 1.507 85.9
2050.0 1.496 85.5
2051.0 1.485 85.2
2052.0 1.473 84.8
2053.0 1.462 84.5
2054.0 1.450 84.1
2055.0 1.438 83.7
2056.0 1.426 83.3
2057.0 1.413 83.0
2058.0 1.400 82.6
2059.0 1.387 82.2
2060.0 1.374 81.8
2061.0 1.360 81.4
2062.0 1.346 80.9
2063.0 1.332 80.5
2064.0 1.317 80.1
2065.0 1.303 79.6
2066.0 1.288 79.2
2067.0 1.272 78.7
2068.0 1.256 78.2
2069.0 1.240 77.7
2070.0 1.224 77.2
2071.0 1.207 76.7
2072.0 1.190 76.1
2073.0 1.172 75.6
2074.0 1.155 75.0
2075.0 1.136 74.4
2076.0 1.118 73.8
2077.0 1.099 73.2
2078.0 1.079 72.5
2079.0 1.059 71.9
2080.0 1.039 71.2
2081.0 1.018 70.4
2082.0 0.997 69.7
2083.0 0.975 68.9
2084.0 0.953 68.1
2085.0 0.930 67.2
2086.0 0.907 66.3
2087.0 0.883 65.3
2088.0 0.859 64.3
2089.0 0.833 63.2
2090.0 0.808 62.1
2091.0 0.781 60.9
2092.0 0.754 59.5
2093.0 0.726 58.1
2094.0 0.697 56.6
2095.0 0.668 55.0
2096.0 0.638 53.1
2097.0 0.606 51.1
2098.0 0.574 48.9
2099.0 0.540 46.4
2100.0 0.506 43.6
2101.0 0.470 40.4
2102.0 0.434 36.6
2103.0 0.396 32.1
2104.0 0.357 26.6
2105.0 0.317 19.8
2106.0 0.276 11.0
2107.0 0.237 359.2
2108.0 0.202 343.0
2109.0 0.175 321.0
2110.0 0.164 293.5
2111.0 0.170 265.3
2112.0 0.191 241.5
2113.0 0.220 223.1
2114.0 0.253 209.2
2115.0 0.287 198.5
2116.0 0.321 190.1
2117.0 0.355 183.4
2118.0 0.389 177.8
2119.0 0.422 173.1
2120.0 0.454 169.1
2121.0 0.486 165.6
2122.0 0.517 162.5
2123.0 0.547 159.8
2124.0 0.576 157.3
2125.0 0.605 155.1
2126.0 0.633 153.1
2127.0 0.660 151.3
2128.0 0.687 149.6
2129.0 0.713 148.0
2130.0 0.738 146.5
2131.0 0.763 145.2
2132.0 0.788 143.9
2133.0 0.811 142.7
2134.0 0.835 141.5
2135.0 0.858 140.4
2136.0 0.880 139.4
2137.0 0.902 138.5
2138.0 0.923 137.5
2139.0 0.944 136.6
2140.0 0.965 135.8
2141.0 0.985 135.0
2142.0 1.005 134.2
2143.0 1.025 133.5
2144.0 1.044 132.7
2145.0 1.062 132.0
2146.0 1.081 131.4
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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