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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:40:43

Orbital Elements for HDS1226

WDS:	HDS1226	WDS ID/Discoverer
P:	54.600	Orbital period (years)
a:	0.203	Semi-major axis (arcseconds)
i:	119.5	Inclination (degrees)
Ω:	202.6	Longitude of ascending node (degrees)
T:	2003.130	Epoch of periastron passage (year)
e:	0.386	Eccentricity
ω:	113.6	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1226

Position:	083409.35-095709.8	Epoch-2000 right ascension and declination
WDS-ID:	08342-0957	WDS designation
Discoverer Code:	HDS1226	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	72746	HD catalog number
Hipparcos number:	42037	Hipparcos catalog number
V1:	8.00	Magnitude of the primary
V2:	9.29	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1226

WDS 6th Orbit including measures of HDS1226

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

Ephemeris of HDS1226

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.137    280.4
-------------------------
1998.0     0.125    178.4
1999.0     0.103    168.9
2000.0     0.083    154.4
2001.0     0.067    131.7
2002.0     0.063    101.5
2003.0     0.073     73.9
2004.0     0.091     55.2
2005.0     0.110     42.9
2006.0     0.127     34.2
2007.0     0.141     27.3
2008.0     0.151     21.6
2009.0     0.158     16.4
2010.0     0.161     11.6
2011.0     0.163      6.9
2012.0     0.162      2.2
2013.0     0.159    357.4
2014.0     0.156    352.4
2015.0     0.151    347.2
2016.0     0.147    341.7
2017.0     0.142    335.8
2018.0     0.138    329.5
2019.0     0.135    322.8
2020.0     0.132    315.9
2021.0     0.131    308.7
2022.0     0.130    301.5
2023.0     0.131    294.2
2024.0     0.133    287.2
2025.0     0.137    280.4
2026.0     0.141    274.0
2027.0     0.147    268.1
2028.0     0.153    262.6
2029.0     0.160    257.5
2030.0     0.167    252.9
2031.0     0.174    248.6
2032.0     0.181    244.7
2033.0     0.188    241.1
2034.0     0.195    237.7
2035.0     0.201    234.6
2036.0     0.207    231.6
2037.0     0.213    228.8
2038.0     0.217    226.1
2039.0     0.221    223.6
2040.0     0.224    221.1
2041.0     0.226    218.6
2042.0     0.226    216.2
2043.0     0.225    213.8
2044.0     0.223    211.4
2045.0     0.220    208.8
2046.0     0.214    206.2
2047.0     0.207    203.4
2048.0     0.197    200.4
2049.0     0.186    197.1
2050.0     0.172    193.2
2051.0     0.155    188.6

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.