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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:41:55

Orbital Elements for HU297

WDS:	HU297	WDS ID/Discoverer
P:	92.600	Orbital period (years)
a:	0.374	Semi-major axis (arcseconds)
i:	111.5	Inclination (degrees)
Ω:	142.5	Longitude of ascending node (degrees)
T:	1983.500	Epoch of periastron passage (year)
e:	0.9	Eccentricity
ω:	48.6	Longitude of periastron (degrees)
Start-Year:	1979.0	Year
End-Year:	2071.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU297

Position:	232657.04-151451.7	Epoch-2000 right ascension and declination
WDS-ID:	23270-1515	WDS designation
Discoverer Code:	HU297	Discover designation and components
ADS number:	16758	Aitken Double Star catalog
HD number:	220811	HD catalog number
Hipparcos number:	115742	Hipparcos catalog number
V1:	7.24	Magnitude of the primary
V2:	8.52	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 HU297

WDS 6th Orbit including measures of HU297

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

Ephemeris of HU297

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.522    301.5
-------------------------
1979.0     0.083    234.9
1980.0     0.071    220.0
1981.0     0.063    200.3
1982.0     0.059    176.8
1983.0     0.050    149.3
1984.0     0.028      0.4
1985.0     0.098    330.5
1986.0     0.149    324.6
1987.0     0.189    321.6
1988.0     0.223    319.5
1989.0     0.253    318.0
1990.0     0.279    316.7
1991.0     0.302    315.7
1992.0     0.323    314.8
1993.0     0.342    314.0
1994.0     0.359    313.3
1995.0     0.376    312.7
1996.0     0.390    312.1
1997.0     0.404    311.5
1998.0     0.416    311.0
1999.0     0.428    310.5
2000.0     0.439    310.1
2001.0     0.449    309.6
2002.0     0.458    309.2
2003.0     0.466    308.8
2004.0     0.474    308.4
2005.0     0.481    308.0
2006.0     0.488    307.7
2007.0     0.494    307.3
2008.0     0.499    307.0
2009.0     0.504    306.6
2010.0     0.508    306.3
2011.0     0.512    305.9
2012.0     0.515    305.6
2013.0     0.518    305.3
2014.0     0.521    305.0
2015.0     0.523    304.6
2016.0     0.524    304.3
2017.0     0.526    304.0
2018.0     0.526    303.7
2019.0     0.527    303.4
2020.0     0.527    303.1
2021.0     0.527    302.8
2022.0     0.526    302.4
2023.0     0.525    302.1
2024.0     0.524    301.8
2025.0     0.522    301.5
2026.0     0.520    301.2
2027.0     0.517    300.8
2028.0     0.515    300.5
2029.0     0.512    300.2
2030.0     0.508    299.9
2031.0     0.504    299.5
2032.0     0.500    299.2
2033.0     0.496    298.8
2034.0     0.491    298.5
2035.0     0.486    298.1
2036.0     0.481    297.7
2037.0     0.476    297.4
2038.0     0.470    297.0
2039.0     0.463    296.6
2040.0     0.457    296.2
2041.0     0.450    295.7
2042.0     0.443    295.3
2043.0     0.435    294.8
2044.0     0.427    294.4
2045.0     0.419    293.9
2046.0     0.411    293.4
2047.0     0.402    292.9
2048.0     0.393    292.3
2049.0     0.383    291.7
2050.0     0.374    291.1
2051.0     0.364    290.5
2052.0     0.353    289.8
2053.0     0.342    289.1
2054.0     0.331    288.3
2055.0     0.320    287.5
2056.0     0.308    286.6
2057.0     0.296    285.7
2058.0     0.283    284.6
2059.0     0.270    283.5
2060.0     0.257    282.3
2061.0     0.243    280.9
2062.0     0.229    279.3
2063.0     0.215    277.5
2064.0     0.200    275.5
2065.0     0.185    273.2
2066.0     0.169    270.4
2067.0     0.153    267.0
2068.0     0.137    262.9
2069.0     0.121    257.7
2070.0     0.106    251.0

Disclaimer

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.