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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:22:39

Orbital Elements for HU371
WDS: HU371 WDS ID/Discoverer
P: 178.600 Orbital period (years)
a: 0.272 Semi-major axis (arcseconds)
i: 59.7 Inclination (degrees)
Ω: 136.9 Longitude of ascending node (degrees)
T: 1870.200 Epoch of periastron passage (year)
e: 0.31 Eccentricity
ω: 296.6 Longitude of periastron (degrees)
Start-Year: 1936.0 Year
End-Year: 2114.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU371
Position: 213527.03+242707.9 Epoch-2000 right ascension and declination
WDS-ID: 21355+2427 WDS designation
Discoverer Code: HU371 Discover designation and components
ADS number: 15115 Aitken Double Star catalog
HD number: 205541 HD catalog number
Hipparcos number: 106605 Hipparcos catalog number
V1: 6.83 Magnitude of the primary
V2: 7.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2005 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for HU371



WDS 6th Orbit including measures of HU371

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


Ephemeris of HU371
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.204    336.5
-------------------------
1936.0     0.171    225.9
1937.0     0.172    228.3
1938.0     0.173    230.7
1939.0     0.174    233.1
1940.0     0.175    235.5
1941.0     0.177    237.8
1942.0     0.179    240.0
1943.0     0.180    242.2
1944.0     0.182    244.4
1945.0     0.184    246.5
1946.0     0.187    248.6
1947.0     0.189    250.6
1948.0     0.192    252.6
1949.0     0.194    254.5
1950.0     0.197    256.4
1951.0     0.200    258.2
1952.0     0.203    260.0
1953.0     0.206    261.7
1954.0     0.209    263.4
1955.0     0.212    265.0
1956.0     0.215    266.5
1957.0     0.218    268.1
1958.0     0.222    269.5
1959.0     0.225    271.0
1960.0     0.228    272.4
1961.0     0.231    273.7
1962.0     0.235    275.1
1963.0     0.238    276.3
1964.0     0.241    277.6
1965.0     0.244    278.8
1966.0     0.248    280.0
1967.0     0.251    281.1
1968.0     0.254    282.3
1969.0     0.257    283.3
1970.0     0.260    284.4
1971.0     0.263    285.5
1972.0     0.266    286.5
1973.0     0.269    287.5
1974.0     0.271    288.5
1975.0     0.274    289.4
1976.0     0.277    290.4
1977.0     0.279    291.3
1978.0     0.281    292.2
1979.0     0.284    293.1
1980.0     0.286    294.0
1981.0     0.288    294.9
1982.0     0.290    295.7
1983.0     0.292    296.6
1984.0     0.294    297.4
1985.0     0.295    298.2
1986.0     0.297    299.0
1987.0     0.298    299.9
1988.0     0.299    300.7
1989.0     0.300    301.5
1990.0     0.301    302.2
1991.0     0.302    303.0
1992.0     0.302    303.8
1993.0     0.303    304.6
1994.0     0.303    305.4
1995.0     0.303    306.1
1996.0     0.303    306.9
1997.0     0.303    307.7
1998.0     0.302    308.5
1999.0     0.302    309.3
2000.0     0.301    310.1
2001.0     0.300    310.9
2002.0     0.298    311.7
2003.0     0.297    312.5
2004.0     0.295    313.3
2005.0     0.293    314.1
2006.0     0.291    314.9
2007.0     0.289    315.8
2008.0     0.286    316.7
2009.0     0.283    317.5
2010.0     0.280    318.4
2011.0     0.277    319.4
2012.0     0.273    320.3
2013.0     0.270    321.3
2014.0     0.266    322.3
2015.0     0.261    323.3
2016.0     0.257    324.4
2017.0     0.252    325.5
2018.0     0.247    326.6
2019.0     0.241    327.8
2020.0     0.236    329.1
2021.0     0.230    330.4
2022.0     0.224    331.8
2023.0     0.217    333.3
2024.0     0.211    334.8
2025.0     0.204    336.5
2026.0     0.197    338.3
2027.0     0.189    340.2
2028.0     0.182    342.3
2029.0     0.175    344.5
2030.0     0.167    347.0
2031.0     0.159    349.7
2032.0     0.152    352.6
2033.0     0.144    355.9
2034.0     0.136    359.6
2035.0     0.129      3.6
2036.0     0.122      8.2
2037.0     0.116     13.2
2038.0     0.110     18.8
2039.0     0.105     25.0
2040.0     0.101     31.7
2041.0     0.099     38.8
2042.0     0.097     46.3
2043.0     0.097     53.9
2044.0     0.098     61.4
2045.0     0.101     68.7
2046.0     0.104     75.5
2047.0     0.109     81.8
2048.0     0.115     87.5
2049.0     0.121     92.7
2050.0     0.127     97.4
2051.0     0.134    101.6
2052.0     0.141    105.4
2053.0     0.148    108.8
2054.0     0.155    111.9
2055.0     0.161    114.8
2056.0     0.168    117.5
2057.0     0.174    119.9
2058.0     0.180    122.2
2059.0     0.186    124.3
2060.0     0.191    126.3
2061.0     0.196    128.2
2062.0     0.201    130.0
2063.0     0.205    131.8
2064.0     0.209    133.5
2065.0     0.212    135.1
2066.0     0.215    136.6
2067.0     0.218    138.1
2068.0     0.220    139.6
2069.0     0.222    141.1
2070.0     0.224    142.5
2071.0     0.225    144.0
2072.0     0.226    145.4
2073.0     0.227    146.8
2074.0     0.227    148.1
2075.0     0.227    149.5
2076.0     0.227    150.9
2077.0     0.226    152.3
2078.0     0.226    153.7
2079.0     0.225    155.1
2080.0     0.224    156.6
2081.0     0.222    158.0
2082.0     0.221    159.4
2083.0     0.219    160.9
2084.0     0.217    162.4
2085.0     0.215    164.0
2086.0     0.213    165.5
2087.0     0.211    167.1
2088.0     0.209    168.7
2089.0     0.207    170.4
2090.0     0.205    172.1
2091.0     0.202    173.8
2092.0     0.200    175.5
2093.0     0.198    177.4
2094.0     0.195    179.2
2095.0     0.193    181.1
2096.0     0.191    183.0
2097.0     0.189    185.0
2098.0     0.186    187.1
2099.0     0.184    189.1
2100.0     0.182    191.3
2101.0     0.181    193.4
2102.0     0.179    195.7
2103.0     0.177    197.9
2104.0     0.176    200.2
2105.0     0.175    202.5
2106.0     0.173    204.9
2107.0     0.172    207.3
2108.0     0.172    209.7
2109.0     0.171    212.1
2110.0     0.171    214.6
2111.0     0.170    217.1
2112.0     0.170    219.5
2113.0     0.171    222.0






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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