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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 16:24:09
WDS:
STT20AB
WDS ID/Discoverer
P:
343.000
Orbital period (years)
a:
0.704
Semi-major axis (arcseconds)
i:
129.9
Inclination (degrees)
Ω:
120.9
Longitude of ascending node (degrees)
T:
1904.000
Epoch of periastron passage (year)
e:
0.292
Eccentricity
ω:
151.2
Longitude of periastron (degrees)
Start-Year:
1854.0
Year
End-Year:
2196.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
005435.22+191118.4
Epoch-2000 right ascension and declination
WDS-ID:
00546+1911
WDS designation
Discoverer Code:
STT20AB
Discover designation and components
ADS number:
746
Aitken Double Star catalog
HD number:
5267
HD catalog number
Hipparcos number:
4267
Hipparcos catalog number
V1:
6.12
Magnitude of the primary
V2:
7.19
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2010
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 0.639 169.4
-------------------------
1854.0 0.445 65.0
1855.0 0.439 63.4
1856.0 0.432 61.7
1857.0 0.425 59.9
1858.0 0.419 58.1
1859.0 0.413 56.3
1860.0 0.407 54.4
1861.0 0.401 52.4
1862.0 0.396 50.4
1863.0 0.390 48.4
1864.0 0.386 46.2
1865.0 0.381 44.1
1866.0 0.377 41.8
1867.0 0.373 39.6
1868.0 0.369 37.2
1869.0 0.366 34.9
1870.0 0.364 32.5
1871.0 0.361 30.1
1872.0 0.360 27.6
1873.0 0.358 25.1
1874.0 0.357 22.6
1875.0 0.357 20.1
1876.0 0.356 17.6
1877.0 0.357 15.1
1878.0 0.357 12.6
1879.0 0.359 10.1
1880.0 0.360 7.6
1881.0 0.362 5.2
1882.0 0.364 2.8
1883.0 0.367 0.4
1884.0 0.370 358.0
1885.0 0.373 355.7
1886.0 0.377 353.5
1887.0 0.381 351.2
1888.0 0.385 349.1
1889.0 0.389 346.9
1890.0 0.394 344.8
1891.0 0.398 342.8
1892.0 0.403 340.8
1893.0 0.408 338.9
1894.0 0.413 337.0
1895.0 0.418 335.1
1896.0 0.423 333.3
1897.0 0.428 331.6
1898.0 0.433 329.9
1899.0 0.439 328.2
1900.0 0.444 326.5
1901.0 0.449 324.9
1902.0 0.454 323.4
1903.0 0.458 321.8
1904.0 0.463 320.3
1905.0 0.468 318.9
1906.0 0.472 317.4
1907.0 0.476 316.0
1908.0 0.481 314.6
1909.0 0.485 313.2
1910.0 0.488 311.9
1911.0 0.492 310.5
1912.0 0.495 309.2
1913.0 0.499 307.9
1914.0 0.502 306.7
1915.0 0.504 305.4
1916.0 0.507 304.2
1917.0 0.509 302.9
1918.0 0.511 301.7
1919.0 0.513 300.5
1920.0 0.515 299.3
1921.0 0.517 298.1
1922.0 0.518 296.9
1923.0 0.519 295.7
1924.0 0.520 294.5
1925.0 0.521 293.3
1926.0 0.521 292.2
1927.0 0.521 291.0
1928.0 0.521 289.8
1929.0 0.521 288.6
1930.0 0.521 287.5
1931.0 0.521 286.3
1932.0 0.520 285.1
1933.0 0.519 283.9
1934.0 0.519 282.7
1935.0 0.517 281.6
1936.0 0.516 280.4
1937.0 0.515 279.2
1938.0 0.514 278.0
1939.0 0.512 276.7
1940.0 0.511 275.5
1941.0 0.509 274.3
1942.0 0.507 273.1
1943.0 0.506 271.8
1944.0 0.504 270.6
1945.0 0.502 269.3
1946.0 0.500 268.0
1947.0 0.498 266.7
1948.0 0.496 265.5
1949.0 0.494 264.2
1950.0 0.492 262.8
1951.0 0.490 261.5
1952.0 0.488 260.2
1953.0 0.486 258.8
1954.0 0.484 257.5
1955.0 0.482 256.1
1956.0 0.481 254.7
1957.0 0.479 253.4
1958.0 0.477 252.0
1959.0 0.476 250.6
1960.0 0.474 249.1
1961.0 0.473 247.7
1962.0 0.471 246.3
1963.0 0.470 244.8
1964.0 0.469 243.4
1965.0 0.468 241.9
1966.0 0.467 240.5
1967.0 0.466 239.0
1968.0 0.466 237.5
1969.0 0.465 236.1
1970.0 0.465 234.6
1971.0 0.465 233.1
1972.0 0.465 231.6
1973.0 0.465 230.2
1974.0 0.465 228.7
1975.0 0.465 227.2
1976.0 0.466 225.7
1977.0 0.467 224.3
1978.0 0.467 222.8
1979.0 0.468 221.4
1980.0 0.470 219.9
1981.0 0.471 218.5
1982.0 0.472 217.0
1983.0 0.474 215.6
1984.0 0.476 214.2
1985.0 0.478 212.8
1986.0 0.480 211.4
1987.0 0.482 210.0
1988.0 0.485 208.6
1989.0 0.487 207.3
1990.0 0.490 206.0
1991.0 0.492 204.6
1992.0 0.495 203.3
1993.0 0.498 202.0
1994.0 0.502 200.8
1995.0 0.505 199.5
1996.0 0.508 198.3
1997.0 0.512 197.0
1998.0 0.515 195.8
1999.0 0.519 194.6
2000.0 0.523 193.5
2001.0 0.527 192.3
2002.0 0.531 191.2
2003.0 0.535 190.0
2004.0 0.539 188.9
2005.0 0.543 187.8
2006.0 0.548 186.8
2007.0 0.552 185.7
2008.0 0.557 184.7
2009.0 0.561 183.6
2010.0 0.566 182.6
2011.0 0.570 181.7
2012.0 0.575 180.7
2013.0 0.580 179.7
2014.0 0.585 178.8
2015.0 0.589 177.9
2016.0 0.594 176.9
2017.0 0.599 176.0
2018.0 0.604 175.2
2019.0 0.609 174.3
2020.0 0.614 173.4
2021.0 0.619 172.6
2022.0 0.624 171.8
2023.0 0.629 171.0
2024.0 0.634 170.2
2025.0 0.639 169.4
2026.0 0.644 168.6
2027.0 0.649 167.8
2028.0 0.653 167.1
2029.0 0.658 166.3
2030.0 0.663 165.6
2031.0 0.668 164.9
2032.0 0.673 164.2
2033.0 0.678 163.5
2034.0 0.683 162.8
2035.0 0.688 162.1
2036.0 0.693 161.4
2037.0 0.698 160.8
2038.0 0.702 160.1
2039.0 0.707 159.5
2040.0 0.712 158.9
2041.0 0.716 158.2
2042.0 0.721 157.6
2043.0 0.726 157.0
2044.0 0.730 156.4
2045.0 0.735 155.8
2046.0 0.739 155.2
2047.0 0.744 154.6
2048.0 0.748 154.1
2049.0 0.752 153.5
2050.0 0.757 152.9
2051.0 0.761 152.4
2052.0 0.765 151.8
2053.0 0.769 151.3
2054.0 0.773 150.8
2055.0 0.777 150.2
2056.0 0.781 149.7
2057.0 0.785 149.2
2058.0 0.789 148.7
2059.0 0.793 148.2
2060.0 0.797 147.6
2061.0 0.800 147.1
2062.0 0.804 146.6
2063.0 0.807 146.2
2064.0 0.811 145.7
2065.0 0.814 145.2
2066.0 0.817 144.7
2067.0 0.821 144.2
2068.0 0.824 143.8
2069.0 0.827 143.3
2070.0 0.830 142.8
2071.0 0.833 142.4
2072.0 0.836 141.9
2073.0 0.839 141.5
2074.0 0.841 141.0
2075.0 0.844 140.5
2076.0 0.846 140.1
2077.0 0.849 139.7
2078.0 0.851 139.2
2079.0 0.854 138.8
2080.0 0.856 138.3
2081.0 0.858 137.9
2082.0 0.860 137.5
2083.0 0.862 137.0
2084.0 0.864 136.6
2085.0 0.866 136.2
2086.0 0.867 135.8
2087.0 0.869 135.3
2088.0 0.871 134.9
2089.0 0.872 134.5
2090.0 0.873 134.1
2091.0 0.875 133.7
2092.0 0.876 133.2
2093.0 0.877 132.8
2094.0 0.878 132.4
2095.0 0.879 132.0
2096.0 0.880 131.6
2097.0 0.880 131.2
2098.0 0.881 130.8
2099.0 0.881 130.4
2100.0 0.882 129.9
2101.0 0.882 129.5
2102.0 0.882 129.1
2103.0 0.882 128.7
2104.0 0.882 128.3
2105.0 0.882 127.9
2106.0 0.882 127.5
2107.0 0.882 127.1
2108.0 0.881 126.7
2109.0 0.881 126.2
2110.0 0.880 125.8
2111.0 0.880 125.4
2112.0 0.879 125.0
2113.0 0.878 124.6
2114.0 0.877 124.2
2115.0 0.876 123.8
2116.0 0.875 123.4
2117.0 0.873 122.9
2118.0 0.872 122.5
2119.0 0.870 122.1
2120.0 0.869 121.7
2121.0 0.867 121.2
2122.0 0.865 120.8
2123.0 0.863 120.4
2124.0 0.861 120.0
2125.0 0.859 119.5
2126.0 0.857 119.1
2127.0 0.854 118.7
2128.0 0.852 118.2
2129.0 0.849 117.8
2130.0 0.846 117.3
2131.0 0.843 116.9
2132.0 0.840 116.4
2133.0 0.837 116.0
2134.0 0.834 115.5
2135.0 0.831 115.1
2136.0 0.827 114.6
2137.0 0.824 114.1
2138.0 0.820 113.7
2139.0 0.817 113.2
2140.0 0.813 112.7
2141.0 0.809 112.2
2142.0 0.805 111.7
2143.0 0.800 111.2
2144.0 0.796 110.7
2145.0 0.792 110.2
2146.0 0.787 109.7
2147.0 0.783 109.2
2148.0 0.778 108.7
2149.0 0.773 108.1
2150.0 0.768 107.6
2151.0 0.763 107.1
2152.0 0.758 106.5
2153.0 0.752 106.0
2154.0 0.747 105.4
2155.0 0.742 104.8
2156.0 0.736 104.2
2157.0 0.730 103.6
2158.0 0.724 103.0
2159.0 0.718 102.4
2160.0 0.712 101.8
2161.0 0.706 101.2
2162.0 0.700 100.5
2163.0 0.694 99.9
2164.0 0.687 99.2
2165.0 0.681 98.5
2166.0 0.674 97.8
2167.0 0.668 97.1
2168.0 0.661 96.4
2169.0 0.654 95.6
2170.0 0.647 94.9
2171.0 0.640 94.1
2172.0 0.633 93.3
2173.0 0.626 92.5
2174.0 0.618 91.7
2175.0 0.611 90.8
2176.0 0.604 90.0
2177.0 0.596 89.1
2178.0 0.589 88.2
2179.0 0.581 87.3
2180.0 0.574 86.3
2181.0 0.566 85.3
2182.0 0.558 84.3
2183.0 0.551 83.3
2184.0 0.543 82.2
2185.0 0.535 81.1
2186.0 0.528 80.0
2187.0 0.520 78.8
2188.0 0.512 77.6
2189.0 0.504 76.4
2190.0 0.497 75.1
2191.0 0.489 73.8
2192.0 0.482 72.4
2193.0 0.474 71.0
2194.0 0.467 69.6
2195.0 0.460 68.1
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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