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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:16:41

Orbital Elements for HU1201AB

WDS:	HU1201AB	WDS ID/Discoverer
P:	47.060	Orbital period (years)
a:	0.138	Semi-major axis (arcseconds)
i:	91.5	Inclination (degrees)
Ω:	128.1	Longitude of ascending node (degrees)
T:	1983.890	Epoch of periastron passage (year)
e:	0.651	Eccentricity
ω:	23.9	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU1201AB

Position:	000529.06+340620.4	Epoch-2000 right ascension and declination
WDS-ID:	00055+3406	WDS designation
Discoverer Code:	HU1201AB	Discover designation and components
ADS number:	51	Aitken Double Star catalog
HD number:	39	HD catalog number
Hipparcos number:	461	Hipparcos catalog number
V1:	8.20	Magnitude of the primary
V2:	9.76	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1998	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU1201AB

WDS 6th Orbit including measures of HU1201AB

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

Ephemeris of HU1201AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.024    300.3
-------------------------
2002.0     0.214    307.8
2003.0     0.215    307.7
2004.0     0.215    307.7
2005.0     0.214    307.6
2006.0     0.212    307.5
2007.0     0.210    307.5
2008.0     0.206    307.4
2009.0     0.202    307.3
2010.0     0.197    307.3
2011.0     0.191    307.2
2012.0     0.184    307.1
2013.0     0.177    307.0
2014.0     0.168    306.9
2015.0     0.159    306.8
2016.0     0.149    306.7
2017.0     0.139    306.5
2018.0     0.127    306.4
2019.0     0.115    306.2
2020.0     0.102    305.9
2021.0     0.088    305.6
2022.0     0.073    305.2
2023.0     0.057    304.5
2024.0     0.041    303.2
2025.0     0.024    300.3
2026.0     0.007    281.6
2027.0     0.012    140.2
2028.0     0.029    132.1
2029.0     0.044    129.8
2030.0     0.051    128.6
2031.0     0.043    127.4
2032.0     0.019    124.0
2033.0     0.012    316.9
2034.0     0.041    310.8
2035.0     0.067    309.8
2036.0     0.090    309.3
2037.0     0.110    309.0
2038.0     0.127    308.8
2039.0     0.143    308.6
2040.0     0.156    308.5
2041.0     0.168    308.4
2042.0     0.178    308.3
2043.0     0.187    308.2
2044.0     0.194    308.1
2045.0     0.201    308.0
2046.0     0.206    308.0
2047.0     0.209    307.9

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.