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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:26:29

Orbital Elements for HEN4

WDS:	HEN4	WDS ID/Discoverer
P:	50.787	Orbital period (years)
a:	2.5021	Semi-major axis (arcseconds)
i:	78.9718	Inclination (degrees)
Ω:	85.7961	Longitude of ascending node (degrees)
T:	2020.134	Epoch of periastron passage (year)
e:	0.80091	Eccentricity
ω:	83.2061	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HEN4

Position:	063046.61-764309.0	Epoch-2000 right ascension and declination
WDS-ID:	06308-7643	WDS designation
Discoverer Code:	HEN4	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	15.5	Magnitude of the primary
V2:	15.7	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HEN4

WDS 6th Orbit including measures of HEN4

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

Ephemeris of HEN4

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.668    274.8
-------------------------
2000.0     0.837    357.0
2001.0     0.835      4.3
2002.0     0.844     11.5
2003.0     0.863     18.5
2004.0     0.892     25.1
2005.0     0.929     31.3
2006.0     0.972     36.9
2007.0     1.019     42.0
2008.0     1.070     46.7
2009.0     1.121     50.9
2010.0     1.172     54.8
2011.0     1.220     58.4
2012.0     1.262     61.6
2013.0     1.297     64.8
2014.0     1.319     67.7
2015.0     1.324     70.6
2016.0     1.302     73.6
2017.0     1.240     76.7
2018.0     1.105     80.3
2019.0     0.823     85.7
2020.0     0.202    112.3
2021.0     0.649    260.6
2022.0     1.114    267.3
2023.0     1.384    270.5
2024.0     1.555    272.9
2025.0     1.668    274.8
2026.0     1.741    276.6
2027.0     1.785    278.2
2028.0     1.807    279.8
2029.0     1.813    281.3
2030.0     1.805    282.9
2031.0     1.786    284.5
2032.0     1.758    286.1
2033.0     1.721    287.7
2034.0     1.679    289.5
2035.0     1.631    291.4
2036.0     1.579    293.3
2037.0     1.523    295.4
2038.0     1.464    297.7
2039.0     1.403    300.2
2040.0     1.340    302.9
2041.0     1.277    305.9
2042.0     1.214    309.2
2043.0     1.153    312.8
2044.0     1.093    316.8
2045.0     1.036    321.3
2046.0     0.984    326.3
2047.0     0.938    331.8
2048.0     0.898    337.9
2049.0     0.868    344.4

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.