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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:22:49

Orbital Elements for HDS809
WDS: HDS809 WDS ID/Discoverer
P: 100.000 Orbital period (years)
a: 0.457 Semi-major axis (arcseconds)
i: 31.5 Inclination (degrees)
Ω: 29.9 Longitude of ascending node (degrees)
T: 2016.130 Epoch of periastron passage (year)
e: 0.314 Eccentricity
ω: 129.9 Longitude of periastron (degrees)
Start-Year: 1975.0 Year
End-Year: 2075.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS809
Position: 055859.62-074003.2 Epoch-2000 right ascension and declination
WDS-ID: 05590-0740 WDS designation
Discoverer Code: HDS809 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 13.41 Magnitude of the primary
V2: 13.91 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS809



WDS 6th Orbit including measures of HDS809

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


Ephemeris of HDS809
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.354    217.6
-------------------------
1975.0     0.564      1.6
1976.0     0.564      3.5
1977.0     0.563      5.4
1978.0     0.562      7.3
1979.0     0.560      9.3
1980.0     0.558     11.2
1981.0     0.556     13.2
1982.0     0.553     15.2
1983.0     0.549     17.2
1984.0     0.545     19.2
1985.0     0.540     21.3
1986.0     0.535     23.4
1987.0     0.529     25.5
1988.0     0.523     27.7
1989.0     0.516     30.0
1990.0     0.508     32.3
1991.0     0.500     34.7
1992.0     0.491     37.2
1993.0     0.482     39.8
1994.0     0.472     42.4
1995.0     0.461     45.2
1996.0     0.450     48.2
1997.0     0.438     51.3
1998.0     0.426     54.5
1999.0     0.414     58.0
2000.0     0.401     61.6
2001.0     0.388     65.6
2002.0     0.374     69.8
2003.0     0.361     74.3
2004.0     0.348     79.1
2005.0     0.335     84.3
2006.0     0.323     90.0
2007.0     0.311     96.0
2008.0     0.301    102.5
2009.0     0.292    109.4
2010.0     0.285    116.7
2011.0     0.280    124.4
2012.0     0.277    132.2
2013.0     0.277    140.1
2014.0     0.278    148.0
2015.0     0.282    155.8
2016.0     0.286    163.4
2017.0     0.293    170.6
2018.0     0.300    177.6
2019.0     0.308    184.2
2020.0     0.316    190.4
2021.0     0.324    196.4
2022.0     0.332    202.1
2023.0     0.339    207.5
2024.0     0.347    212.6
2025.0     0.354    217.6
2026.0     0.360    222.4
2027.0     0.366    227.0
2028.0     0.372    231.5
2029.0     0.377    235.8
2030.0     0.382    240.0
2031.0     0.387    244.2
2032.0     0.391    248.2
2033.0     0.396    252.1
2034.0     0.400    256.0
2035.0     0.405    259.7
2036.0     0.409    263.4
2037.0     0.413    267.0
2038.0     0.418    270.5
2039.0     0.422    274.0
2040.0     0.427    277.4
2041.0     0.431    280.7
2042.0     0.436    283.9
2043.0     0.441    287.1
2044.0     0.446    290.2
2045.0     0.451    293.2
2046.0     0.456    296.1
2047.0     0.461    299.0
2048.0     0.466    301.9
2049.0     0.472    304.6
2050.0     0.477    307.3
2051.0     0.482    310.0
2052.0     0.487    312.6
2053.0     0.493    315.1
2054.0     0.498    317.6
2055.0     0.503    320.0
2056.0     0.508    322.4
2057.0     0.513    324.7
2058.0     0.518    327.0
2059.0     0.522    329.3
2060.0     0.527    331.5
2061.0     0.531    333.7
2062.0     0.535    335.8
2063.0     0.539    337.9
2064.0     0.543    340.0
2065.0     0.547    342.1
2066.0     0.550    344.1
2067.0     0.553    346.1
2068.0     0.555    348.1
2069.0     0.558    350.0
2070.0     0.560    352.0
2071.0     0.561    353.9
2072.0     0.563    355.8
2073.0     0.564    357.8
2074.0     0.564    359.7






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.


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