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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:23

Orbital Elements for HU879

WDS:	HU879	WDS ID/Discoverer
P:	38.235	Orbital period (years)
a:	0.3782	Semi-major axis (arcseconds)
i:	81.4	Inclination (degrees)
Ω:	40.7	Longitude of ascending node (degrees)
T:	1999.635	Epoch of periastron passage (year)
e:	0.68	Eccentricity
ω:	35.7	Longitude of periastron (degrees)
Start-Year:	2006.0	Year
End-Year:	2044.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU879

Position:	102753.09+364226.9	Epoch-2000 right ascension and declination
WDS-ID:	10279+3642	WDS designation
Discoverer Code:	HU879	Discover designation and components
ADS number:	7780	Aitken Double Star catalog
HD number:	90537	HD catalog number
Hipparcos number:	51233	Hipparcos catalog number
V1:	4.62	Magnitude of the primary
V2:	6.04	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU879

WDS 6th Orbit including measures of HU879

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

Ephemeris of HU879

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.369    231.5
-------------------------
2006.0     0.414    219.9
2007.0     0.452    220.7
2008.0     0.483    221.3
2009.0     0.507    221.9
2010.0     0.526    222.5
2011.0     0.540    223.0
2012.0     0.550    223.5
2013.0     0.555    224.0
2014.0     0.557    224.5
2015.0     0.555    224.9
2016.0     0.550    225.4
2017.0     0.541    225.9
2018.0     0.530    226.4
2019.0     0.515    227.0
2020.0     0.498    227.5
2021.0     0.477    228.2
2022.0     0.454    228.8
2023.0     0.428    229.6
2024.0     0.400    230.5
2025.0     0.369    231.5
2026.0     0.335    232.7
2027.0     0.299    234.1
2028.0     0.261    236.0
2029.0     0.220    238.6
2030.0     0.178    242.3
2031.0     0.134    248.5
2032.0     0.091    260.7
2033.0     0.056    290.9
2034.0     0.056    345.7
2035.0     0.089     16.8
2036.0     0.124     30.0
2037.0     0.138     38.2
2038.0     0.088     49.0
2039.0     0.034    178.4
2040.0     0.137    210.3
2041.0     0.225    215.1
2042.0     0.297    217.3
2043.0     0.356    218.6

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.