Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:37:52

Orbital Elements for HU481
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

Further data from the WDS Sixth Catalog of Orbits for HU481
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

Double Star Orbit for HU481



WDS 6th Orbit including measures of HU481

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of HU481
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






Disclaimer
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.


Acknowledgements
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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