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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:16:54

Orbital Elements for HDS7

WDS:	HDS7	WDS ID/Discoverer
P:	49.400	Orbital period (years)
a:	0.213	Semi-major axis (arcseconds)
i:	60.7	Inclination (degrees)
Ω:	183.2	Longitude of ascending node (degrees)
T:	2003.770	Epoch of periastron passage (year)
e:	0.515	Eccentricity
ω:	237.6	Longitude of periastron (degrees)
Start-Year:	2001.0	Year
End-Year:	2049.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS7

Position:	000608.02+094253.9	Epoch-2000 right ascension and declination
WDS-ID:	00061+0943	WDS designation
Discoverer Code:	HDS7	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	126	HD catalog number
Hipparcos number:	510	Hipparcos catalog number
V1:	8.47	Magnitude of the primary
V2:	8.88	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS7

WDS 6th Orbit including measures of HDS7

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

Ephemeris of HDS7

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.242    211.8
-------------------------
2001.0     0.127      0.3
2002.0     0.112     10.0
2003.0     0.089     23.7
2004.0     0.065     47.9
2005.0     0.053     91.5
2006.0     0.070    131.4
2007.0     0.098    151.8
2008.0     0.128    162.8
2009.0     0.154    169.9
2010.0     0.177    175.0
2011.0     0.196    179.0
2012.0     0.212    182.3
2013.0     0.225    185.2
2014.0     0.236    187.8
2015.0     0.244    190.2
2016.0     0.250    192.5
2017.0     0.255    194.6
2018.0     0.258    196.8
2019.0     0.259    198.8
2020.0     0.259    200.9
2021.0     0.258    203.0
2022.0     0.255    205.1
2023.0     0.252    207.2
2024.0     0.247    209.5
2025.0     0.242    211.8
2026.0     0.236    214.2
2027.0     0.229    216.8
2028.0     0.222    219.5
2029.0     0.214    222.4
2030.0     0.206    225.6
2031.0     0.197    229.0
2032.0     0.189    232.7
2033.0     0.180    236.8
2034.0     0.171    241.3
2035.0     0.163    246.2
2036.0     0.155    251.7
2037.0     0.148    257.7
2038.0     0.142    264.4
2039.0     0.136    271.6
2040.0     0.133    279.2
2041.0     0.130    287.3
2042.0     0.129    295.5
2043.0     0.130    303.8
2044.0     0.131    312.0
2045.0     0.134    319.9
2046.0     0.136    327.5
2047.0     0.138    334.8
2048.0     0.139    342.0

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.