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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:42:20

Orbital Elements for VOU28BC

WDS:	VOU28BC	WDS ID/Discoverer
P:	44.280	Orbital period (years)
a:	0.823	Semi-major axis (arcseconds)
i:	89.4	Inclination (degrees)
Ω:	176.7	Longitude of ascending node (degrees)
T:	2025.570	Epoch of periastron passage (year)
e:	0.234	Eccentricity
ω:	243.6	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for VOU28BC

Position:	233246.58-164508.4	Epoch-2000 right ascension and declination
WDS-ID:	23328-1651	WDS designation
Discoverer Code:	VOU28BC	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	116191	Hipparcos catalog number
V1:	11.14	Magnitude of the primary
V2:	11.17	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for VOU28BC

WDS 6th Orbit including measures of VOU28BC

Ephemeris of VOU28BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.354    357.6
-------------------------
2003.0     0.487    177.8
2004.0     0.404    178.1
2005.0     0.317    178.5
2006.0     0.227    179.3
2007.0     0.134    181.1
2008.0     0.040    191.6
2009.0     0.057    346.4
2010.0     0.150    352.9
2011.0     0.243    354.4
2012.0     0.332    355.1
2013.0     0.416    355.5
2014.0     0.494    355.8
2015.0     0.564    356.0
2016.0     0.623    356.2
2017.0     0.670    356.3
2018.0     0.703    356.4
2019.0     0.718    356.5
2020.0     0.714    356.6
2021.0     0.688    356.8
2022.0     0.639    356.9
2023.0     0.566    357.0
2024.0     0.470    357.3
2025.0     0.354    357.6
2026.0     0.222    358.3
2027.0     0.081      1.4
2028.0     0.065    170.7
2029.0     0.207    174.9
2030.0     0.342    175.7
2031.0     0.465    176.0
2032.0     0.573    176.2
2033.0     0.666    176.4
2034.0     0.743    176.5
2035.0     0.803    176.6
2036.0     0.847    176.6
2037.0     0.875    176.7
2038.0     0.889    176.8
2039.0     0.889    176.9
2040.0     0.876    176.9
2041.0     0.851    177.0
2042.0     0.816    177.1
2043.0     0.771    177.2
2044.0     0.717    177.3
2045.0     0.654    177.4
2046.0     0.585    177.5

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.