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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:03:16

Orbital Elements for HU442
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

Further data from the WDS Sixth Catalog of Orbits for HU442
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

Double Star Orbit for HU442



WDS 6th Orbit including measures of HU442

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


Ephemeris of HU442
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






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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