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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 16:46:29
WDS:
HU1055AB
WDS ID/Discoverer
P:
100.500
Orbital period (years)
a:
0.442
Semi-major axis (arcseconds)
i:
126.0
Inclination (degrees)
Ω:
227.0
Longitude of ascending node (degrees)
T:
1991.300
Epoch of periastron passage (year)
e:
0.975
Eccentricity
ω:
286.0
Longitude of periastron (degrees)
Start-Year:
1975.0
Year
End-Year:
2075.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
031507.58+161812.9
Epoch-2000 right ascension and declination
WDS-ID:
03151+1618
WDS designation
Discoverer Code:
HU1055AB
Discover designation and components
ADS number:
2429
Aitken Double Star catalog
HD number:
.
HD catalog number
Hipparcos number:
15134
Hipparcos catalog number
V1:
9.4
Magnitude of the primary
V2:
9.9
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
1996
Date of last observation
Orbit grade:
4
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 0.498 116.4
-------------------------
1975.0 0.404 98.7
1976.0 0.392 98.1
1977.0 0.380 97.5
1978.0 0.367 96.9
1979.0 0.354 96.2
1980.0 0.340 95.4
1981.0 0.324 94.6
1982.0 0.308 93.7
1983.0 0.291 92.6
1984.0 0.272 91.5
1985.0 0.251 90.1
1986.0 0.229 88.5
1987.0 0.204 86.6
1988.0 0.176 84.1
1989.0 0.144 80.5
1990.0 0.103 74.4
1991.0 0.042 55.3
1992.0 0.054 176.8
1993.0 0.091 158.6
1994.0 0.120 150.3
1995.0 0.146 145.1
1996.0 0.169 141.4
1997.0 0.191 138.6
1998.0 0.211 136.3
1999.0 0.229 134.4
2000.0 0.247 132.8
2001.0 0.263 131.4
2002.0 0.279 130.2
2003.0 0.294 129.0
2004.0 0.308 128.0
2005.0 0.322 127.1
2006.0 0.335 126.3
2007.0 0.347 125.5
2008.0 0.359 124.7
2009.0 0.370 124.1
2010.0 0.381 123.4
2011.0 0.392 122.8
2012.0 0.401 122.2
2013.0 0.411 121.7
2014.0 0.420 121.1
2015.0 0.429 120.6
2016.0 0.437 120.1
2017.0 0.446 119.7
2018.0 0.453 119.2
2019.0 0.461 118.8
2020.0 0.468 118.4
2021.0 0.474 117.9
2022.0 0.481 117.5
2023.0 0.487 117.2
2024.0 0.493 116.8
2025.0 0.498 116.4
2026.0 0.503 116.0
2027.0 0.508 115.7
2028.0 0.513 115.3
2029.0 0.517 115.0
2030.0 0.521 114.6
2031.0 0.525 114.3
2032.0 0.529 114.0
2033.0 0.532 113.7
2034.0 0.535 113.3
2035.0 0.538 113.0
2036.0 0.540 112.7
2037.0 0.542 112.4
2038.0 0.544 112.1
2039.0 0.546 111.8
2040.0 0.547 111.5
2041.0 0.548 111.2
2042.0 0.549 110.9
2043.0 0.550 110.6
2044.0 0.550 110.3
2045.0 0.550 110.0
2046.0 0.550 109.6
2047.0 0.550 109.3
2048.0 0.549 109.0
2049.0 0.548 108.7
2050.0 0.547 108.4
2051.0 0.545 108.1
2052.0 0.543 107.8
2053.0 0.541 107.5
2054.0 0.539 107.2
2055.0 0.536 106.9
2056.0 0.533 106.6
2057.0 0.530 106.2
2058.0 0.526 105.9
2059.0 0.522 105.6
2060.0 0.518 105.2
2061.0 0.513 104.9
2062.0 0.509 104.5
2063.0 0.503 104.2
2064.0 0.498 103.8
2065.0 0.492 103.4
2066.0 0.485 103.1
2067.0 0.479 102.7
2068.0 0.472 102.3
2069.0 0.464 101.8
2070.0 0.456 101.4
2071.0 0.448 101.0
2072.0 0.439 100.5
2073.0 0.429 100.0
2074.0 0.419 99.5
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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