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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:44:13

Orbital Elements for HU718
WDS: HU718 WDS ID/Discoverer
P: 139.765 Orbital period (years)
a: 0.552 Semi-major axis (arcseconds)
i: 102.1 Inclination (degrees)
Ω: 34.3 Longitude of ascending node (degrees)
T: 2019.142 Epoch of periastron passage (year)
e: 0.783 Eccentricity
ω: 79.3 Longitude of periastron (degrees)
Start-Year: 1956.0 Year
End-Year: 2094.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU718
Position: 090030.68+322503.2 Epoch-2000 right ascension and declination
WDS-ID: 09005+3225 WDS designation
Discoverer Code: HU718 Discover designation and components
ADS number: 7124 Aitken Double Star catalog
HD number: 76975 HD catalog number
Hipparcos number: 44230 Hipparcos catalog number
V1: 9.30 Magnitude of the primary
V2: 9.49 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HU718



WDS 6th Orbit including measures of HU718

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


Ephemeris of HU718
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.267    213.4
-------------------------
1956.0     0.238    155.7
1957.0     0.234    153.8
1958.0     0.229    151.9
1959.0     0.225    149.9
1960.0     0.221    147.9
1961.0     0.217    145.7
1962.0     0.213    143.5
1963.0     0.209    141.2
1964.0     0.206    138.9
1965.0     0.203    136.4
1966.0     0.201    133.9
1967.0     0.199    131.3
1968.0     0.197    128.7
1969.0     0.195    126.1
1970.0     0.194    123.3
1971.0     0.193    120.6
1972.0     0.192    117.8
1973.0     0.192    115.1
1974.0     0.192    112.3
1975.0     0.193    109.5
1976.0     0.194    106.8
1977.0     0.195    104.1
1978.0     0.196    101.4
1979.0     0.198     98.8
1980.0     0.200     96.2
1981.0     0.203     93.7
1982.0     0.206     91.2
1983.0     0.209     88.9
1984.0     0.212     86.5
1985.0     0.215     84.3
1986.0     0.219     82.1
1987.0     0.223     80.0
1988.0     0.226     78.0
1989.0     0.230     76.0
1990.0     0.234     74.1
1991.0     0.238     72.3
1992.0     0.243     70.5
1993.0     0.247     68.8
1994.0     0.251     67.2
1995.0     0.255     65.6
1996.0     0.259     64.0
1997.0     0.262     62.5
1998.0     0.266     61.0
1999.0     0.269     59.6
2000.0     0.272     58.2
2001.0     0.275     56.8
2002.0     0.278     55.5
2003.0     0.280     54.2
2004.0     0.281     52.9
2005.0     0.282     51.6
2006.0     0.282     50.3
2007.0     0.281     49.0
2008.0     0.280     47.7
2009.0     0.277     46.4
2010.0     0.273     45.0
2011.0     0.266     43.6
2012.0     0.258     42.2
2013.0     0.246     40.5
2014.0     0.231     38.8
2015.0     0.211     36.7
2016.0     0.184     34.0
2017.0     0.147     30.3
2018.0     0.098     23.3
2019.0     0.040    357.3
2020.0     0.046    248.0
2021.0     0.105    226.5
2022.0     0.157    220.4
2023.0     0.201    217.2
2024.0     0.237    215.0
2025.0     0.267    213.4
2026.0     0.293    212.1
2027.0     0.315    211.0
2028.0     0.334    210.0
2029.0     0.350    209.1
2030.0     0.365    208.3
2031.0     0.377    207.6
2032.0     0.389    206.9
2033.0     0.398    206.2
2034.0     0.407    205.6
2035.0     0.414    205.0
2036.0     0.421    204.4
2037.0     0.426    203.8
2038.0     0.431    203.3
2039.0     0.435    202.7
2040.0     0.438    202.2
2041.0     0.441    201.7
2042.0     0.444    201.2
2043.0     0.445    200.6
2044.0     0.446    200.1
2045.0     0.447    199.6
2046.0     0.448    199.1
2047.0     0.448    198.6
2048.0     0.447    198.1
2049.0     0.446    197.6
2050.0     0.445    197.0
2051.0     0.444    196.5
2052.0     0.442    196.0
2053.0     0.440    195.5
2054.0     0.438    195.0
2055.0     0.436    194.4
2056.0     0.433    193.9
2057.0     0.430    193.3
2058.0     0.427    192.8
2059.0     0.424    192.2
2060.0     0.420    191.6
2061.0     0.416    191.0
2062.0     0.412    190.4
2063.0     0.408    189.8
2064.0     0.404    189.2
2065.0     0.400    188.6
2066.0     0.396    187.9
2067.0     0.391    187.3
2068.0     0.386    186.6
2069.0     0.381    185.9
2070.0     0.377    185.2
2071.0     0.372    184.5
2072.0     0.366    183.7
2073.0     0.361    182.9
2074.0     0.356    182.1
2075.0     0.351    181.3
2076.0     0.345    180.5
2077.0     0.340    179.6
2078.0     0.334    178.7
2079.0     0.329    177.8
2080.0     0.323    176.8
2081.0     0.318    175.8
2082.0     0.312    174.8
2083.0     0.306    173.7
2084.0     0.301    172.6
2085.0     0.295    171.4
2086.0     0.290    170.2
2087.0     0.284    169.0
2088.0     0.279    167.7
2089.0     0.273    166.4
2090.0     0.268    165.0
2091.0     0.262    163.5
2092.0     0.257    162.0
2093.0     0.252    160.4






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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