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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:00:12

Orbital Elements for HU609

WDS:	HU609	WDS ID/Discoverer
P:	82.380	Orbital period (years)
a:	0.231	Semi-major axis (arcseconds)
i:	122.0	Inclination (degrees)
Ω:	11.0	Longitude of ascending node (degrees)
T:	1978.040	Epoch of periastron passage (year)
e:	0.491	Eccentricity
ω:	276.0	Longitude of periastron (degrees)
Start-Year:	1984.0	Year
End-Year:	2066.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU609

Position:	042614.99+344257.8	Epoch-2000 right ascension and declination
WDS-ID:	04263+3443	WDS designation
Discoverer Code:	HU609	Discover designation and components
ADS number:	3211	Aitken Double Star catalog
HD number:	27961	HD catalog number
Hipparcos number:	20709	Hipparcos catalog number
V1:	9.32	Magnitude of the primary
V2:	9.00	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU609

WDS 6th Orbit including measures of HU609

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

Ephemeris of HU609

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.197    252.6
-------------------------
1984.0     0.151     17.1
1985.0     0.162     12.7
1986.0     0.172      8.9
1987.0     0.180      5.4
1988.0     0.187      2.2
1989.0     0.192    359.2
1990.0     0.196    356.3
1991.0     0.199    353.6
1992.0     0.201    350.9
1993.0     0.202    348.2
1994.0     0.203    345.6
1995.0     0.203    343.0
1996.0     0.203    340.4
1997.0     0.202    337.8
1998.0     0.201    335.1
1999.0     0.200    332.4
2000.0     0.198    329.7
2001.0     0.196    326.9
2002.0     0.195    324.1
2003.0     0.193    321.3
2004.0     0.191    318.3
2005.0     0.189    315.4
2006.0     0.188    312.3
2007.0     0.186    309.3
2008.0     0.185    306.1
2009.0     0.184    303.0
2010.0     0.183    299.8
2011.0     0.182    296.5
2012.0     0.181    293.3
2013.0     0.181    290.0
2014.0     0.181    286.7
2015.0     0.181    283.4
2016.0     0.182    280.1
2017.0     0.182    276.9
2018.0     0.183    273.7
2019.0     0.185    270.5
2020.0     0.186    267.4
2021.0     0.188    264.3
2022.0     0.190    261.3
2023.0     0.192    258.3
2024.0     0.194    255.4
2025.0     0.197    252.6
2026.0     0.199    249.9
2027.0     0.202    247.2
2028.0     0.204    244.6
2029.0     0.207    242.0
2030.0     0.209    239.5
2031.0     0.212    237.1
2032.0     0.215    234.7
2033.0     0.217    232.4
2034.0     0.219    230.2
2035.0     0.221    227.9
2036.0     0.223    225.8
2037.0     0.225    223.6
2038.0     0.226    221.5
2039.0     0.227    219.4
2040.0     0.227    217.3
2041.0     0.227    215.2
2042.0     0.227    213.1
2043.0     0.226    211.0
2044.0     0.224    208.9
2045.0     0.222    206.7
2046.0     0.218    204.5
2047.0     0.214    202.2
2048.0     0.209    199.8
2049.0     0.203    197.3
2050.0     0.196    194.6
2051.0     0.187    191.6
2052.0     0.176    188.4
2053.0     0.164    184.7
2054.0     0.151    180.3
2055.0     0.135    175.1
2056.0     0.118    168.4
2057.0     0.100    159.3
2058.0     0.083    146.3
2059.0     0.069    127.1
2060.0     0.062    101.3
2061.0     0.067     75.0
2062.0     0.081     54.9
2063.0     0.098     41.3
2064.0     0.115     31.7
2065.0     0.131     24.6

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.