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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:57:57

Orbital Elements for HO328

WDS:	HO328	WDS ID/Discoverer
P:	63.300	Orbital period (years)
a:	0.358	Semi-major axis (arcseconds)
i:	130.0	Inclination (degrees)
Ω:	81.8	Longitude of ascending node (degrees)
T:	1972.400	Epoch of periastron passage (year)
e:	0.98	Eccentricity
ω:	263.0	Longitude of periastron (degrees)
Start-Year:	1994.0	Year
End-Year:	2056.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO328

Position:	041701.22+194032.6	Epoch-2000 right ascension and declination
WDS-ID:	04170+1941	WDS designation
Discoverer Code:	HO328	Discover designation and components
ADS number:	3102	Aitken Double Star catalog
HD number:	27028	HD catalog number
Hipparcos number:	19975	Hipparcos catalog number
V1:	7.38	Magnitude of the primary
V2:	9.06	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1976	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HO328

WDS 6th Orbit including measures of HO328

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

Ephemeris of HO328

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.317    350.8
-------------------------
1994.0     0.435      7.2
1995.0     0.441      6.7
1996.0     0.445      6.2
1997.0     0.449      5.8
1998.0     0.452      5.3
1999.0     0.455      4.8
2000.0     0.457      4.4
2001.0     0.459      4.0
2002.0     0.460      3.5
2003.0     0.461      3.1
2004.0     0.460      2.6
2005.0     0.460      2.2
2006.0     0.459      1.8
2007.0     0.457      1.3
2008.0     0.455      0.9
2009.0     0.452      0.4
2010.0     0.448    359.9
2011.0     0.444    359.5
2012.0     0.440    359.0
2013.0     0.434    358.5
2014.0     0.428    358.0
2015.0     0.422    357.5
2016.0     0.415    357.0
2017.0     0.407    356.4
2018.0     0.399    355.8
2019.0     0.389    355.2
2020.0     0.380    354.6
2021.0     0.369    353.9
2022.0     0.357    353.2
2023.0     0.345    352.5
2024.0     0.331    351.7
2025.0     0.317    350.8
2026.0     0.302    349.8
2027.0     0.285    348.7
2028.0     0.267    347.5
2029.0     0.247    346.1
2030.0     0.226    344.4
2031.0     0.202    342.4
2032.0     0.175    339.7
2033.0     0.145    336.1
2034.0     0.110    330.3
2035.0     0.064    317.5
2036.0     0.043     53.6
2037.0     0.104     34.6
2038.0     0.144     28.4
2039.0     0.178     24.8
2040.0     0.206     22.3
2041.0     0.231     20.3
2042.0     0.254     18.7
2043.0     0.274     17.4
2044.0     0.292     16.2
2045.0     0.310     15.2
2046.0     0.325     14.3
2047.0     0.340     13.4
2048.0     0.353     12.7
2049.0     0.365     11.9
2050.0     0.377     11.3
2051.0     0.387     10.6
2052.0     0.397     10.0
2053.0     0.406      9.4
2054.0     0.414      8.9
2055.0     0.421      8.4

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.