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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 16:57:44
WDS:
STF518BC
WDS ID/Discoverer
P:
233.200
Orbital period (years)
a:
6.88788
Semi-major axis (arcseconds)
i:
107.98
Inclination (degrees)
Ω:
151.58
Longitude of ascending node (degrees)
T:
1848.789
Epoch of periastron passage (year)
e:
0.4141
Eccentricity
ω:
321.2
Longitude of periastron (degrees)
Start-Year:
1909.0
Year
End-Year:
2141.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
041521.79-073929.1
Epoch-2000 right ascension and declination
WDS-ID:
04153-0739
WDS designation
Discoverer Code:
STF518BC
Discover designation and components
ADS number:
3093
Aitken Double Star catalog
HD number:
26976
HD catalog number
Hipparcos number:
.
Hipparcos catalog number
V1:
10.02
Magnitude of the primary
V2:
11.47
Magnitude of the secondary
Equinox:
Equinox
Date:
2019
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 7.776 328.6
-------------------------
1909.0 2.628 42.1
1910.0 2.694 39.2
1911.0 2.765 36.4
1912.0 2.841 33.8
1913.0 2.921 31.3
1914.0 3.005 28.9
1915.0 3.093 26.7
1916.0 3.184 24.6
1917.0 3.278 22.7
1918.0 3.374 20.8
1919.0 3.472 19.0
1920.0 3.572 17.4
1921.0 3.674 15.8
1922.0 3.777 14.3
1923.0 3.881 12.9
1924.0 3.985 11.6
1925.0 4.091 10.3
1926.0 4.197 9.1
1927.0 4.303 8.0
1928.0 4.410 6.9
1929.0 4.516 5.9
1930.0 4.623 4.9
1931.0 4.729 4.0
1932.0 4.835 3.1
1933.0 4.941 2.2
1934.0 5.046 1.4
1935.0 5.151 0.6
1936.0 5.255 359.8
1937.0 5.359 359.1
1938.0 5.462 358.4
1939.0 5.564 357.7
1940.0 5.665 357.1
1941.0 5.765 356.4
1942.0 5.864 355.8
1943.0 5.963 355.2
1944.0 6.060 354.7
1945.0 6.156 354.1
1946.0 6.251 353.6
1947.0 6.345 353.1
1948.0 6.438 352.6
1949.0 6.529 352.1
1950.0 6.619 351.6
1951.0 6.708 351.1
1952.0 6.795 350.7
1953.0 6.881 350.2
1954.0 6.966 349.8
1955.0 7.049 349.4
1956.0 7.131 349.0
1957.0 7.211 348.6
1958.0 7.290 348.2
1959.0 7.367 347.8
1960.0 7.442 347.4
1961.0 7.516 347.1
1962.0 7.589 346.7
1963.0 7.659 346.3
1964.0 7.728 346.0
1965.0 7.795 345.6
1966.0 7.861 345.3
1967.0 7.925 345.0
1968.0 7.987 344.7
1969.0 8.047 344.3
1970.0 8.105 344.0
1971.0 8.162 343.7
1972.0 8.217 343.4
1973.0 8.269 343.1
1974.0 8.320 342.8
1975.0 8.369 342.5
1976.0 8.416 342.2
1977.0 8.461 341.9
1978.0 8.504 341.6
1979.0 8.545 341.4
1980.0 8.584 341.1
1981.0 8.621 340.8
1982.0 8.655 340.5
1983.0 8.688 340.2
1984.0 8.718 340.0
1985.0 8.747 339.7
1986.0 8.773 339.4
1987.0 8.797 339.2
1988.0 8.818 338.9
1989.0 8.838 338.6
1990.0 8.855 338.4
1991.0 8.869 338.1
1992.0 8.882 337.9
1993.0 8.892 337.6
1994.0 8.899 337.3
1995.0 8.904 337.1
1996.0 8.907 336.8
1997.0 8.907 336.6
1998.0 8.905 336.3
1999.0 8.900 336.0
2000.0 8.893 335.8
2001.0 8.883 335.5
2002.0 8.870 335.3
2003.0 8.855 335.0
2004.0 8.837 334.7
2005.0 8.816 334.5
2006.0 8.793 334.2
2007.0 8.766 333.9
2008.0 8.737 333.7
2009.0 8.705 333.4
2010.0 8.670 333.1
2011.0 8.633 332.8
2012.0 8.592 332.6
2013.0 8.548 332.3
2014.0 8.502 332.0
2015.0 8.452 331.7
2016.0 8.399 331.4
2017.0 8.343 331.1
2018.0 8.283 330.8
2019.0 8.221 330.5
2020.0 8.155 330.2
2021.0 8.086 329.9
2022.0 8.014 329.6
2023.0 7.938 329.3
2024.0 7.859 328.9
2025.0 7.776 328.6
2026.0 7.690 328.3
2027.0 7.600 327.9
2028.0 7.507 327.6
2029.0 7.410 327.2
2030.0 7.310 326.8
2031.0 7.205 326.4
2032.0 7.097 326.0
2033.0 6.985 325.6
2034.0 6.870 325.2
2035.0 6.750 324.7
2036.0 6.627 324.3
2037.0 6.500 323.8
2038.0 6.369 323.3
2039.0 6.233 322.8
2040.0 6.094 322.2
2041.0 5.951 321.7
2042.0 5.804 321.1
2043.0 5.653 320.4
2044.0 5.498 319.8
2045.0 5.338 319.1
2046.0 5.175 318.3
2047.0 5.008 317.5
2048.0 4.838 316.7
2049.0 4.663 315.8
2050.0 4.485 314.8
2051.0 4.303 313.7
2052.0 4.118 312.6
2053.0 3.930 311.3
2054.0 3.739 309.9
2055.0 3.546 308.3
2056.0 3.351 306.6
2057.0 3.155 304.7
2058.0 2.958 302.5
2059.0 2.761 299.9
2060.0 2.566 297.0
2061.0 2.374 293.7
2062.0 2.188 289.7
2063.0 2.010 285.0
2064.0 1.843 279.4
2065.0 1.694 272.8
2066.0 1.568 265.1
2067.0 1.471 256.1
2068.0 1.412 246.2
2069.0 1.394 235.7
2070.0 1.420 225.2
2071.0 1.487 215.4
2072.0 1.589 206.7
2073.0 1.718 199.1
2074.0 1.868 192.7
2075.0 2.031 187.3
2076.0 2.204 182.7
2077.0 2.381 178.7
2078.0 2.559 175.4
2079.0 2.737 172.4
2080.0 2.911 169.9
2081.0 3.080 167.6
2082.0 3.242 165.5
2083.0 3.397 163.6
2084.0 3.542 161.9
2085.0 3.678 160.3
2086.0 3.803 158.9
2087.0 3.918 157.5
2088.0 4.021 156.2
2089.0 4.113 154.9
2090.0 4.193 153.7
2091.0 4.262 152.6
2092.0 4.319 151.5
2093.0 4.366 150.4
2094.0 4.401 149.3
2095.0 4.426 148.3
2096.0 4.441 147.2
2097.0 4.447 146.2
2098.0 4.443 145.1
2099.0 4.430 144.1
2100.0 4.410 143.0
2101.0 4.382 142.0
2102.0 4.346 140.9
2103.0 4.304 139.8
2104.0 4.256 138.7
2105.0 4.202 137.5
2106.0 4.143 136.3
2107.0 4.079 135.1
2108.0 4.012 133.9
2109.0 3.940 132.6
2110.0 3.865 131.2
2111.0 3.788 129.8
2112.0 3.708 128.3
2113.0 3.626 126.8
2114.0 3.542 125.2
2115.0 3.458 123.5
2116.0 3.373 121.8
2117.0 3.288 119.9
2118.0 3.204 118.0
2119.0 3.121 115.9
2120.0 3.039 113.7
2121.0 2.959 111.4
2122.0 2.881 109.0
2123.0 2.807 106.5
2124.0 2.736 103.8
2125.0 2.669 101.0
2126.0 2.608 98.0
2127.0 2.551 94.9
2128.0 2.501 91.7
2129.0 2.458 88.3
2130.0 2.421 84.9
2131.0 2.392 81.3
2132.0 2.371 77.7
2133.0 2.359 74.0
2134.0 2.355 70.3
2135.0 2.359 66.6
2136.0 2.372 62.9
2137.0 2.393 59.3
2138.0 2.423 55.7
2139.0 2.460 52.3
2140.0 2.505 49.0
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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