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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:42:11
WDS:
HU120
WDS ID/Discoverer
P:
197.600
Orbital period (years)
a:
0.475
Semi-major axis (arcseconds)
i:
45.6
Inclination (degrees)
Ω:
140.2
Longitude of ascending node (degrees)
T:
1983.190
Epoch of periastron passage (year)
e:
0.375
Eccentricity
ω:
82.5
Longitude of periastron (degrees)
Start-Year:
1927.0
Year
End-Year:
2123.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
084609.03-142204.1
Epoch-2000 right ascension and declination
WDS-ID:
08462-1422
WDS designation
Discoverer Code:
HU120
Discover designation and components
ADS number:
6989
Aitken Double Star catalog
HD number:
74861
HD catalog number
Hipparcos number:
43038
Hipparcos catalog number
V1:
9.19
Magnitude of the primary
V2:
9.21
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2009
Date of last observation
Orbit grade:
3
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 0.481 335.5
-------------------------
1927.0 0.457 94.6
1928.0 0.458 95.9
1929.0 0.458 97.1
1930.0 0.458 98.4
1931.0 0.458 99.7
1932.0 0.457 100.9
1933.0 0.457 102.2
1934.0 0.457 103.5
1935.0 0.457 104.8
1936.0 0.456 106.1
1937.0 0.456 107.3
1938.0 0.455 108.6
1939.0 0.454 109.9
1940.0 0.453 111.2
1941.0 0.452 112.5
1942.0 0.451 113.8
1943.0 0.449 115.1
1944.0 0.448 116.5
1945.0 0.446 117.8
1946.0 0.444 119.1
1947.0 0.442 120.5
1948.0 0.439 121.9
1949.0 0.436 123.3
1950.0 0.433 124.7
1951.0 0.430 126.1
1952.0 0.427 127.6
1953.0 0.423 129.0
1954.0 0.419 130.5
1955.0 0.415 132.1
1956.0 0.410 133.6
1957.0 0.405 135.2
1958.0 0.400 136.9
1959.0 0.395 138.6
1960.0 0.389 140.3
1961.0 0.383 142.1
1962.0 0.376 144.0
1963.0 0.369 145.9
1964.0 0.362 147.9
1965.0 0.354 150.0
1966.0 0.346 152.1
1967.0 0.338 154.4
1968.0 0.329 156.8
1969.0 0.320 159.3
1970.0 0.311 162.0
1971.0 0.302 164.9
1972.0 0.292 167.9
1973.0 0.283 171.1
1974.0 0.273 174.6
1975.0 0.264 178.3
1976.0 0.255 182.2
1977.0 0.246 186.5
1978.0 0.237 191.1
1979.0 0.230 196.0
1980.0 0.223 201.2
1981.0 0.218 206.7
1982.0 0.213 212.4
1983.0 0.210 218.4
1984.0 0.208 224.5
1985.0 0.208 230.6
1986.0 0.210 236.8
1987.0 0.213 242.7
1988.0 0.217 248.5
1989.0 0.223 254.1
1990.0 0.229 259.3
1991.0 0.237 264.2
1992.0 0.245 268.8
1993.0 0.254 273.1
1994.0 0.264 277.0
1995.0 0.274 280.7
1996.0 0.284 284.2
1997.0 0.294 287.4
1998.0 0.304 290.4
1999.0 0.314 293.2
2000.0 0.324 295.8
2001.0 0.334 298.3
2002.0 0.343 300.6
2003.0 0.353 302.8
2004.0 0.362 304.9
2005.0 0.370 306.9
2006.0 0.379 308.8
2007.0 0.387 310.6
2008.0 0.395 312.3
2009.0 0.402 314.0
2010.0 0.409 315.6
2011.0 0.416 317.2
2012.0 0.423 318.7
2013.0 0.429 320.2
2014.0 0.435 321.6
2015.0 0.441 323.0
2016.0 0.446 324.4
2017.0 0.451 325.7
2018.0 0.456 327.0
2019.0 0.460 328.2
2020.0 0.464 329.5
2021.0 0.468 330.7
2022.0 0.472 331.9
2023.0 0.475 333.1
2024.0 0.478 334.3
2025.0 0.481 335.5
2026.0 0.484 336.6
2027.0 0.486 337.7
2028.0 0.488 338.9
2029.0 0.491 340.0
2030.0 0.492 341.1
2031.0 0.494 342.2
2032.0 0.495 343.3
2033.0 0.497 344.3
2034.0 0.498 345.4
2035.0 0.499 346.5
2036.0 0.500 347.6
2037.0 0.500 348.6
2038.0 0.501 349.7
2039.0 0.501 350.8
2040.0 0.501 351.8
2041.0 0.502 352.9
2042.0 0.502 353.9
2043.0 0.501 355.0
2044.0 0.501 356.1
2045.0 0.501 357.1
2046.0 0.501 358.2
2047.0 0.500 359.2
2048.0 0.500 0.3
2049.0 0.499 1.4
2050.0 0.498 2.5
2051.0 0.497 3.5
2052.0 0.496 4.6
2053.0 0.496 5.7
2054.0 0.495 6.8
2055.0 0.493 7.9
2056.0 0.492 9.0
2057.0 0.491 10.1
2058.0 0.490 11.2
2059.0 0.489 12.3
2060.0 0.488 13.4
2061.0 0.486 14.5
2062.0 0.485 15.7
2063.0 0.484 16.8
2064.0 0.483 17.9
2065.0 0.481 19.1
2066.0 0.480 20.2
2067.0 0.479 21.4
2068.0 0.477 22.6
2069.0 0.476 23.7
2070.0 0.475 24.9
2071.0 0.474 26.1
2072.0 0.472 27.3
2073.0 0.471 28.5
2074.0 0.470 29.7
2075.0 0.469 30.9
2076.0 0.467 32.1
2077.0 0.466 33.4
2078.0 0.465 34.6
2079.0 0.464 35.8
2080.0 0.463 37.1
2081.0 0.462 38.3
2082.0 0.461 39.6
2083.0 0.460 40.8
2084.0 0.459 42.1
2085.0 0.458 43.3
2086.0 0.458 44.6
2087.0 0.457 45.9
2088.0 0.456 47.2
2089.0 0.455 48.5
2090.0 0.455 49.7
2091.0 0.454 51.0
2092.0 0.454 52.3
2093.0 0.453 53.6
2094.0 0.453 54.9
2095.0 0.453 56.2
2096.0 0.452 57.5
2097.0 0.452 58.8
2098.0 0.452 60.1
2099.0 0.452 61.4
2100.0 0.452 62.7
2101.0 0.452 64.1
2102.0 0.452 65.4
2103.0 0.452 66.7
2104.0 0.452 68.0
2105.0 0.452 69.3
2106.0 0.452 70.6
2107.0 0.452 71.9
2108.0 0.452 73.2
2109.0 0.453 74.5
2110.0 0.453 75.8
2111.0 0.453 77.1
2112.0 0.453 78.4
2113.0 0.454 79.7
2114.0 0.454 81.0
2115.0 0.455 82.3
2116.0 0.455 83.6
2117.0 0.455 84.9
2118.0 0.456 86.1
2119.0 0.456 87.4
2120.0 0.456 88.7
2121.0 0.457 90.0
2122.0 0.457 91.3
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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