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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:37:52
WDS:
HU481
WDS ID/Discoverer
P:
119.500
Orbital period (years)
a:
0.464
Semi-major axis (arcseconds)
i:
146.8
Inclination (degrees)
Ω:
172.6
Longitude of ascending node (degrees)
T:
1997.950
Epoch of periastron passage (year)
e:
0.567
Eccentricity
ω:
160.5
Longitude of periastron (degrees)
Start-Year:
1966.0
Year
End-Year:
2084.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
162114.74+225918.8
Epoch-2000 right ascension and declination
WDS-ID:
16212+2259
WDS designation
Discoverer Code:
HU481
Discover designation and components
ADS number:
10017
Aitken Double Star catalog
HD number:
147442
HD catalog number
Hipparcos number:
80117
Hipparcos catalog number
V1:
8.21
Magnitude of the primary
V2:
10.04
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:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.496 226.7
-------------------------
1966.0 0.605 162.4
1967.0 0.595 161.2
1968.0 0.584 159.9
1969.0 0.573 158.6
1970.0 0.562 157.2
1971.0 0.550 155.7
1972.0 0.538 154.2
1973.0 0.525 152.6
1974.0 0.512 151.0
1975.0 0.498 149.2
1976.0 0.483 147.3
1977.0 0.468 145.4
1978.0 0.453 143.3
1979.0 0.437 141.0
1980.0 0.421 138.6
1981.0 0.404 135.9
1982.0 0.386 133.1
1983.0 0.369 129.9
1984.0 0.351 126.5
1985.0 0.332 122.6
1986.0 0.314 118.4
1987.0 0.295 113.5
1988.0 0.277 108.1
1989.0 0.260 101.9
1990.0 0.243 94.8
1991.0 0.228 86.7
1992.0 0.215 77.5
1993.0 0.204 67.3
1994.0 0.197 56.2
1995.0 0.193 44.3
1996.0 0.192 32.2
1997.0 0.194 20.2
1998.0 0.198 8.5
1999.0 0.203 357.4
2000.0 0.208 346.8
2001.0 0.214 336.8
2002.0 0.221 327.3
2003.0 0.228 318.5
2004.0 0.236 310.1
2005.0 0.245 302.4
2006.0 0.254 295.2
2007.0 0.264 288.5
2008.0 0.276 282.4
2009.0 0.287 276.7
2010.0 0.300 271.5
2011.0 0.313 266.8
2012.0 0.326 262.4
2013.0 0.339 258.3
2014.0 0.353 254.6
2015.0 0.366 251.1
2016.0 0.380 247.9
2017.0 0.393 244.9
2018.0 0.407 242.1
2019.0 0.420 239.5
2020.0 0.433 237.0
2021.0 0.446 234.7
2022.0 0.459 232.6
2023.0 0.472 230.5
2024.0 0.484 228.5
2025.0 0.496 226.7
2026.0 0.508 224.9
2027.0 0.519 223.2
2028.0 0.530 221.6
2029.0 0.541 220.0
2030.0 0.552 218.5
2031.0 0.562 217.1
2032.0 0.572 215.7
2033.0 0.582 214.3
2034.0 0.591 213.0
2035.0 0.600 211.8
2036.0 0.609 210.6
2037.0 0.617 209.4
2038.0 0.625 208.2
2039.0 0.633 207.1
2040.0 0.640 206.0
2041.0 0.647 204.9
2042.0 0.654 203.8
2043.0 0.660 202.8
2044.0 0.666 201.8
2045.0 0.672 200.8
2046.0 0.677 199.8
2047.0 0.682 198.8
2048.0 0.687 197.9
2049.0 0.691 196.9
2050.0 0.695 196.0
2051.0 0.699 195.1
2052.0 0.702 194.2
2053.0 0.705 193.3
2054.0 0.708 192.4
2055.0 0.710 191.5
2056.0 0.712 190.6
2057.0 0.714 189.7
2058.0 0.715 188.8
2059.0 0.716 188.0
2060.0 0.717 187.1
2061.0 0.717 186.2
2062.0 0.717 185.4
2063.0 0.716 184.5
2064.0 0.716 183.6
2065.0 0.714 182.7
2066.0 0.713 181.9
2067.0 0.711 181.0
2068.0 0.709 180.1
2069.0 0.706 179.2
2070.0 0.703 178.3
2071.0 0.700 177.4
2072.0 0.696 176.5
2073.0 0.692 175.5
2074.0 0.687 174.6
2075.0 0.682 173.7
2076.0 0.677 172.7
2077.0 0.671 171.7
2078.0 0.665 170.7
2079.0 0.658 169.7
2080.0 0.651 168.6
2081.0 0.644 167.6
2082.0 0.636 166.5
2083.0 0.628 165.4
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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