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

Double Star Calculator - Orbit

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

Orbital Elements for HDS1207

WDS:	HDS1207	WDS ID/Discoverer
P:	57.572	Orbital period (years)
a:	0.227	Semi-major axis (arcseconds)
i:	27.0	Inclination (degrees)
Ω:	30.9	Longitude of ascending node (degrees)
T:	2002.556	Epoch of periastron passage (year)
e:	0.416	Eccentricity
ω:	124.3	Longitude of periastron (degrees)
Start-Year:	1997.0	Year
End-Year:	2053.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1207

Position:	082753.71-260758.6	Epoch-2000 right ascension and declination
WDS-ID:	08279-2608	WDS designation
Discoverer Code:	HDS1207	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	71688	HD catalog number
Hipparcos number:	41504	Hipparcos catalog number
V1:	6.69	Magnitude of the primary
V2:	10.06	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS1207

WDS 6th Orbit including measures of HDS1207

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

Ephemeris of HDS1207

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.279    318.6
-------------------------
1997.0     0.162     75.0
1998.0     0.148     85.9
1999.0     0.137     98.8
2000.0     0.127    113.9
2001.0     0.122    130.8
2002.0     0.121    148.6
2003.0     0.125    165.9
2004.0     0.132    181.8
2005.0     0.141    195.9
2006.0     0.150    208.3
2007.0     0.159    219.2
2008.0     0.168    228.9
2009.0     0.177    237.7
2010.0     0.185    245.7
2011.0     0.193    253.0
2012.0     0.201    259.7
2013.0     0.208    266.0
2014.0     0.215    271.8
2015.0     0.222    277.2
2016.0     0.229    282.4
2017.0     0.236    287.2
2018.0     0.242    291.8
2019.0     0.248    296.1
2020.0     0.254    300.3
2021.0     0.260    304.2
2022.0     0.265    308.0
2023.0     0.270    311.7
2024.0     0.275    315.2
2025.0     0.279    318.6
2026.0     0.283    321.9
2027.0     0.287    325.1
2028.0     0.290    328.3
2029.0     0.293    331.3
2030.0     0.295    334.4
2031.0     0.297    337.3
2032.0     0.299    340.3
2033.0     0.300    343.2
2034.0     0.301    346.1
2035.0     0.301    349.0
2036.0     0.300    351.8
2037.0     0.299    354.8
2038.0     0.298    357.7
2039.0     0.295      0.7
2040.0     0.292      3.7
2041.0     0.289      6.8
2042.0     0.285      9.9
2043.0     0.280     13.2
2044.0     0.274     16.6
2045.0     0.267     20.2
2046.0     0.260     24.0
2047.0     0.252     27.9
2048.0     0.242     32.2
2049.0     0.232     36.9
2050.0     0.221     41.9
2051.0     0.209     47.6
2052.0     0.197     53.9

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.