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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:03:16
WDS:
HU442
WDS ID/Discoverer
P:
140.230
Orbital period (years)
a:
0.26
Semi-major axis (arcseconds)
i:
28.1
Inclination (degrees)
Ω:
165.6
Longitude of ascending node (degrees)
T:
1997.530
Epoch of periastron passage (year)
e:
0.716
Eccentricity
ω:
3.9
Longitude of periastron (degrees)
Start-Year:
1955.0
Year
End-Year:
2095.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
043959.09+230052.4
Epoch-2000 right ascension and declination
WDS-ID:
04400+2301
WDS designation
Discoverer Code:
HU442
Discover designation and components
ADS number:
3370
Aitken Double Star catalog
HD number:
29538
HD catalog number
Hipparcos number:
.
Hipparcos catalog number
V1:
9.3
Magnitude of the primary
V2:
9.9
Magnitude of the secondary
Equinox:
Equinox
Date:
2007
Date of last observation
Orbit grade:
4
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 0.313 320.2
-------------------------
1955.0 0.390 5.3
1956.0 0.386 6.0
1957.0 0.382 6.7
1958.0 0.377 7.4
1959.0 0.372 8.2
1960.0 0.368 9.0
1961.0 0.363 9.8
1962.0 0.357 10.6
1963.0 0.352 11.5
1964.0 0.347 12.3
1965.0 0.341 13.2
1966.0 0.335 14.2
1967.0 0.329 15.2
1968.0 0.322 16.2
1969.0 0.316 17.2
1970.0 0.309 18.3
1971.0 0.302 19.4
1972.0 0.295 20.6
1973.0 0.288 21.9
1974.0 0.280 23.2
1975.0 0.272 24.6
1976.0 0.264 26.1
1977.0 0.256 27.7
1978.0 0.247 29.4
1979.0 0.239 31.2
1980.0 0.230 33.1
1981.0 0.220 35.3
1982.0 0.211 37.6
1983.0 0.201 40.1
1984.0 0.191 42.9
1985.0 0.181 46.0
1986.0 0.170 49.4
1987.0 0.160 53.4
1988.0 0.149 57.9
1989.0 0.138 63.1
1990.0 0.127 69.2
1991.0 0.116 76.4
1992.0 0.106 85.1
1993.0 0.097 95.5
1994.0 0.088 108.0
1995.0 0.082 122.9
1996.0 0.077 139.9
1997.0 0.074 158.7
1998.0 0.074 178.3
1999.0 0.076 197.5
2000.0 0.080 215.3
2001.0 0.087 230.7
2002.0 0.095 243.7
2003.0 0.105 254.4
2004.0 0.116 263.1
2005.0 0.127 270.4
2006.0 0.139 276.5
2007.0 0.150 281.6
2008.0 0.161 286.0
2009.0 0.172 289.9
2010.0 0.183 293.3
2011.0 0.193 296.3
2012.0 0.204 299.0
2013.0 0.214 301.5
2014.0 0.224 303.7
2015.0 0.233 305.8
2016.0 0.242 307.6
2017.0 0.251 309.4
2018.0 0.260 311.0
2019.0 0.268 312.6
2020.0 0.276 314.0
2021.0 0.284 315.4
2022.0 0.292 316.7
2023.0 0.299 317.9
2024.0 0.306 319.1
2025.0 0.313 320.2
2026.0 0.320 321.2
2027.0 0.326 322.3
2028.0 0.333 323.2
2029.0 0.339 324.2
2030.0 0.345 325.1
2031.0 0.350 326.0
2032.0 0.356 326.8
2033.0 0.361 327.7
2034.0 0.366 328.5
2035.0 0.371 329.3
2036.0 0.376 330.0
2037.0 0.381 330.8
2038.0 0.385 331.5
2039.0 0.389 332.2
2040.0 0.393 332.9
2041.0 0.397 333.6
2042.0 0.401 334.3
2043.0 0.405 334.9
2044.0 0.408 335.6
2045.0 0.411 336.2
2046.0 0.415 336.8
2047.0 0.417 337.5
2048.0 0.420 338.1
2049.0 0.423 338.7
2050.0 0.425 339.3
2051.0 0.428 339.9
2052.0 0.430 340.4
2053.0 0.432 341.0
2054.0 0.434 341.6
2055.0 0.436 342.1
2056.0 0.437 342.7
2057.0 0.439 343.3
2058.0 0.440 343.8
2059.0 0.441 344.4
2060.0 0.442 344.9
2061.0 0.443 345.5
2062.0 0.444 346.0
2063.0 0.445 346.5
2064.0 0.445 347.1
2065.0 0.446 347.6
2066.0 0.446 348.2
2067.0 0.446 348.7
2068.0 0.446 349.2
2069.0 0.446 349.8
2070.0 0.445 350.3
2071.0 0.445 350.8
2072.0 0.444 351.4
2073.0 0.444 351.9
2074.0 0.443 352.5
2075.0 0.442 353.0
2076.0 0.441 353.6
2077.0 0.439 354.1
2078.0 0.438 354.7
2079.0 0.436 355.2
2080.0 0.434 355.8
2081.0 0.433 356.4
2082.0 0.431 356.9
2083.0 0.428 357.5
2084.0 0.426 358.1
2085.0 0.424 358.7
2086.0 0.421 359.3
2087.0 0.418 359.9
2088.0 0.416 0.5
2089.0 0.412 1.1
2090.0 0.409 1.8
2091.0 0.406 2.4
2092.0 0.402 3.1
2093.0 0.399 3.7
2094.0 0.395 4.4
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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