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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:58:15

Orbital Elements for HU322AB

WDS:	HU322AB	WDS ID/Discoverer
P:	42.400	Orbital period (years)
a:	0.145	Semi-major axis (arcseconds)
i:	99.1	Inclination (degrees)
Ω:	90.3	Longitude of ascending node (degrees)
T:	1966.930	Epoch of periastron passage (year)
e:	0.615	Eccentricity
ω:	197.4	Longitude of periastron (degrees)
Start-Year:	2004.0	Year
End-Year:	2046.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU322AB

Position:	183345.62+174355.9	Epoch-2000 right ascension and declination
WDS-ID:	18338+1744	WDS designation
Discoverer Code:	HU322AB	Discover designation and components
ADS number:	11454	Aitken Double Star catalog
HD number:	171365	HD catalog number
Hipparcos number:	90996	Hipparcos catalog number
V1:	7.74	Magnitude of the primary
V2:	8.91	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU322AB

WDS 6th Orbit including measures of HU322AB

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

Ephemeris of HU322AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.222     89.9
-------------------------
2004.0     0.034     54.0
2005.0     0.019     16.7
2006.0     0.023    312.5
2007.0     0.039    287.2
2008.0     0.054    276.9
2009.0     0.056    269.9
2010.0     0.041    260.8
2011.0     0.016    224.9
2012.0     0.025    122.6
2013.0     0.053    105.8
2014.0     0.080    100.6
2015.0     0.103     97.9
2016.0     0.124     96.2
2017.0     0.143     95.0
2018.0     0.159     94.0
2019.0     0.173     93.2
2020.0     0.186     92.5
2021.0     0.196     91.9
2022.0     0.205     91.3
2023.0     0.212     90.8
2024.0     0.218     90.3
2025.0     0.222     89.9
2026.0     0.225     89.4
2027.0     0.227     89.0
2028.0     0.228     88.6
2029.0     0.227     88.1
2030.0     0.225     87.7
2031.0     0.222     87.3
2032.0     0.218     86.8
2033.0     0.213     86.3
2034.0     0.206     85.8
2035.0     0.199     85.3
2036.0     0.190     84.7
2037.0     0.180     84.0
2038.0     0.169     83.3
2039.0     0.157     82.5
2040.0     0.144     81.5
2041.0     0.130     80.3
2042.0     0.114     78.8
2043.0     0.097     76.8
2044.0     0.079     73.9
2045.0     0.061     69.3

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.