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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 19:38:50

Orbital Elements for HU398
WDS: HU398 WDS ID/Discoverer
P: 152.700 Orbital period (years)
a: 0.313 Semi-major axis (arcseconds)
i: 5.7 Inclination (degrees)
Ω: 121.9 Longitude of ascending node (degrees)
T: 1957.870 Epoch of periastron passage (year)
e: 0.591 Eccentricity
ω: 3.7 Longitude of periastron (degrees)
Start-Year: 1949.0 Year
End-Year: 2101.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU398
Position: 230222.68+183631.9 Epoch-2000 right ascension and declination
WDS-ID: 23024+1837 WDS designation
Discoverer Code: HU398 Discover designation and components
ADS number: 16463 Aitken Double Star catalog
HD number: 217716 HD catalog number
Hipparcos number: 113768 Hipparcos catalog number
V1: 9.58 Magnitude of the primary
V2: 10.04 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: Flags

Double Star Orbit for HU398



WDS 6th Orbit including measures of HU398

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


Ephemeris of HU398
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.493    298.6
-------------------------
1949.0     0.181     47.5
1950.0     0.172     53.5
1951.0     0.163     60.1
1952.0     0.155     67.5
1953.0     0.147     75.6
1954.0     0.141     84.5
1955.0     0.135     94.3
1956.0     0.131    104.8
1957.0     0.129    115.8
1958.0     0.128    127.1
1959.0     0.129    138.3
1960.0     0.132    149.2
1961.0     0.136    159.5
1962.0     0.142    169.1
1963.0     0.149    177.8
1964.0     0.157    185.7
1965.0     0.165    192.9
1966.0     0.174    199.3
1967.0     0.183    205.2
1968.0     0.192    210.4
1969.0     0.202    215.2
1970.0     0.211    219.6
1971.0     0.221    223.5
1972.0     0.230    227.2
1973.0     0.239    230.6
1974.0     0.248    233.7
1975.0     0.257    236.6
1976.0     0.266    239.3
1977.0     0.274    241.9
1978.0     0.283    244.2
1979.0     0.291    246.5
1980.0     0.299    248.6
1981.0     0.307    250.6
1982.0     0.315    252.6
1983.0     0.322    254.4
1984.0     0.329    256.1
1985.0     0.336    257.8
1986.0     0.343    259.4
1987.0     0.350    261.0
1988.0     0.357    262.5
1989.0     0.363    263.9
1990.0     0.369    265.3
1991.0     0.375    266.6
1992.0     0.381    267.9
1993.0     0.387    269.2
1994.0     0.393    270.4
1995.0     0.398    271.6
1996.0     0.403    272.7
1997.0     0.408    273.8
1998.0     0.413    274.9
1999.0     0.418    276.0
2000.0     0.423    277.1
2001.0     0.427    278.1
2002.0     0.432    279.1
2003.0     0.436    280.1
2004.0     0.440    281.0
2005.0     0.444    282.0
2006.0     0.447    282.9
2007.0     0.451    283.8
2008.0     0.454    284.7
2009.0     0.458    285.6
2010.0     0.461    286.5
2011.0     0.464    287.4
2012.0     0.467    288.2
2013.0     0.470    289.1
2014.0     0.472    289.9
2015.0     0.475    290.7
2016.0     0.477    291.6
2017.0     0.479    292.4
2018.0     0.482    293.2
2019.0     0.484    294.0
2020.0     0.485    294.8
2021.0     0.487    295.6
2022.0     0.489    296.3
2023.0     0.490    297.1
2024.0     0.491    297.9
2025.0     0.493    298.6
2026.0     0.494    299.4
2027.0     0.495    300.2
2028.0     0.496    300.9
2029.0     0.496    301.7
2030.0     0.497    302.4
2031.0     0.497    303.2
2032.0     0.498    303.9
2033.0     0.498    304.7
2034.0     0.498    305.4
2035.0     0.498    306.2
2036.0     0.498    306.9
2037.0     0.497    307.7
2038.0     0.497    308.4
2039.0     0.497    309.2
2040.0     0.496    309.9
2041.0     0.495    310.7
2042.0     0.494    311.4
2043.0     0.493    312.2
2044.0     0.492    313.0
2045.0     0.491    313.7
2046.0     0.489    314.5
2047.0     0.488    315.3
2048.0     0.486    316.1
2049.0     0.484    316.8
2050.0     0.482    317.6
2051.0     0.480    318.4
2052.0     0.478    319.2
2053.0     0.476    320.1
2054.0     0.473    320.9
2055.0     0.471    321.7
2056.0     0.468    322.6
2057.0     0.465    323.4
2058.0     0.462    324.3
2059.0     0.459    325.1
2060.0     0.456    326.0
2061.0     0.452    326.9
2062.0     0.449    327.8
2063.0     0.445    328.8
2064.0     0.441    329.7
2065.0     0.437    330.7
2066.0     0.433    331.7
2067.0     0.429    332.7
2068.0     0.425    333.7
2069.0     0.420    334.7
2070.0     0.415    335.8
2071.0     0.410    336.9
2072.0     0.405    338.0
2073.0     0.400    339.1
2074.0     0.395    340.3
2075.0     0.389    341.5
2076.0     0.384    342.7
2077.0     0.378    344.0
2078.0     0.372    345.3
2079.0     0.366    346.7
2080.0     0.359    348.1
2081.0     0.353    349.6
2082.0     0.346    351.1
2083.0     0.339    352.7
2084.0     0.332    354.3
2085.0     0.325    356.0
2086.0     0.318    357.8
2087.0     0.310    359.7
2088.0     0.302      1.7
2089.0     0.294      3.8
2090.0     0.286      6.0
2091.0     0.278      8.3
2092.0     0.269     10.8
2093.0     0.261     13.4
2094.0     0.252     16.2
2095.0     0.243     19.3
2096.0     0.234     22.5
2097.0     0.225     26.1
2098.0     0.215     29.9
2099.0     0.206     34.1
2100.0     0.197     38.7



 

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.


www.stella-vega.de