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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:20:33

Orbital Elements for HDS69

WDS:	HDS69	WDS ID/Discoverer
P:	61.200	Orbital period (years)
a:	0.135	Semi-major axis (arcseconds)
i:	84.0	Inclination (degrees)
Ω:	100.1	Longitude of ascending node (degrees)
T:	2010.900	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	198.2	Longitude of periastron (degrees)
Start-Year:	1995.0	Year
End-Year:	2055.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS69

Position:	003101.17-313819.3	Epoch-2000 right ascension and declination
WDS-ID:	00310-3138	WDS designation
Discoverer Code:	HDS69	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	2762	HD catalog number
Hipparcos number:	2433	Hipparcos catalog number
V1:	10.45	Magnitude of the primary
V2:	10.45	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS69

WDS 6th Orbit including measures of HDS69

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

Ephemeris of HDS69

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.169     98.6
-------------------------
1995.0     0.130    106.2
1996.0     0.120    106.7
1997.0     0.110    107.4
1998.0     0.100    108.1
1999.0     0.089    109.1
2000.0     0.077    110.4
2001.0     0.065    112.1
2002.0     0.052    114.6
2003.0     0.039    118.8
2004.0     0.026    127.2
2005.0     0.014    151.6
2006.0     0.011    221.2
2007.0     0.022    257.8
2008.0     0.034    269.3
2009.0     0.044    274.8
2010.0     0.049    278.7
2011.0     0.044    282.5
2012.0     0.029    288.9
2013.0     0.010    318.0
2014.0     0.016     71.8
2015.0     0.036     87.2
2016.0     0.055     91.5
2017.0     0.073     93.6
2018.0     0.089     94.9
2019.0     0.104     95.9
2020.0     0.117     96.6
2021.0     0.130     97.1
2022.0     0.141     97.6
2023.0     0.151     98.0
2024.0     0.161     98.3
2025.0     0.169     98.6
2026.0     0.177     98.9
2027.0     0.183     99.2
2028.0     0.190     99.4
2029.0     0.195     99.7
2030.0     0.200     99.9
2031.0     0.204    100.1
2032.0     0.207    100.3
2033.0     0.210    100.5
2034.0     0.212    100.7
2035.0     0.214    100.9
2036.0     0.215    101.1
2037.0     0.216    101.2
2038.0     0.216    101.4
2039.0     0.215    101.6
2040.0     0.214    101.8
2041.0     0.213    102.0
2042.0     0.211    102.2
2043.0     0.208    102.4
2044.0     0.205    102.6
2045.0     0.202    102.8
2046.0     0.198    103.0
2047.0     0.194    103.2
2048.0     0.189    103.4
2049.0     0.183    103.7
2050.0     0.177    103.9
2051.0     0.171    104.2
2052.0     0.164    104.5
2053.0     0.157    104.9
2054.0     0.149    105.2

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.