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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:20:06

Orbital Elements for HU767

WDS:	HU767	WDS ID/Discoverer
P:	34.330	Orbital period (years)
a:	0.1907	Semi-major axis (arcseconds)
i:	66.66	Inclination (degrees)
Ω:	169.64	Longitude of ascending node (degrees)
T:	1978.083	Epoch of periastron passage (year)
e:	0.586	Eccentricity
ω:	120.1	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU767

Position:	211328.77+155856.8	Epoch-2000 right ascension and declination
WDS-ID:	21135+1559	WDS designation
Discoverer Code:	HU767	Discover designation and components
ADS number:	14761	Aitken Double Star catalog
HD number:	202128	HD catalog number
Hipparcos number:	104771	Hipparcos catalog number
V1:	7.05	Magnitude of the primary
V2:	7.13	Magnitude of the secondary
Equinox:	2000	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 HU767

WDS 6th Orbit including measures of HU767

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

Ephemeris of HU767

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.130    112.0
-------------------------
2008.0     0.170    171.0
2009.0     0.142    176.1
2010.0     0.105    184.2
2011.0     0.059    203.6
2012.0     0.034    283.5
2013.0     0.072    335.9
2014.0     0.101    352.1
2015.0     0.111      2.8
2016.0     0.112     12.5
2017.0     0.108     22.6
2018.0     0.103     33.6
2019.0     0.099     45.7
2020.0     0.097     58.6
2021.0     0.098     71.6
2022.0     0.103     83.9
2023.0     0.110     94.7
2024.0     0.119    104.1
2025.0     0.130    112.0
2026.0     0.142    118.6
2027.0     0.154    124.2
2028.0     0.166    129.0
2029.0     0.177    133.1
2030.0     0.188    136.8
2031.0     0.198    140.1
2032.0     0.207    143.0
2033.0     0.214    145.8
2034.0     0.220    148.4
2035.0     0.225    150.9
2036.0     0.227    153.3
2037.0     0.227    155.6
2038.0     0.224    158.0
2039.0     0.219    160.5
2040.0     0.210    163.2
2041.0     0.196    166.2

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.