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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:25:11

Orbital Elements for HDS866

WDS:	HDS866	WDS ID/Discoverer
P:	58.230	Orbital period (years)
a:	0.186	Semi-major axis (arcseconds)
i:	81.4	Inclination (degrees)
Ω:	82.6	Longitude of ascending node (degrees)
T:	2023.030	Epoch of periastron passage (year)
e:	0.66	Eccentricity
ω:	243.7	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS866

Position:	062006.83-075219.0	Epoch-2000 right ascension and declination
WDS-ID:	06201-0752	WDS designation
Discoverer Code:	HDS866	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	7.36	Magnitude of the primary
V2:	8.42	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS866

WDS 6th Orbit including measures of HDS866

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

Ephemeris of HDS866

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.053     72.2
-------------------------
1996.0     0.126    102.2
1997.0     0.118    103.8
1998.0     0.110    105.7
1999.0     0.101    107.8
2000.0     0.092    110.4
2001.0     0.083    113.5
2002.0     0.075    117.4
2003.0     0.066    122.3
2004.0     0.058    128.5
2005.0     0.051    136.7
2006.0     0.044    147.5
2007.0     0.040    161.1
2008.0     0.038    176.9
2009.0     0.039    193.1
2010.0     0.043    207.5
2011.0     0.049    219.0
2012.0     0.056    227.8
2013.0     0.063    234.7
2014.0     0.071    240.0
2015.0     0.078    244.3
2016.0     0.085    247.9
2017.0     0.091    251.0
2018.0     0.095    253.8
2019.0     0.096    256.4
2020.0     0.093    259.1
2021.0     0.083    262.1
2022.0     0.063    266.6
2023.0     0.030    278.6
2024.0     0.016     43.8
2025.0     0.053     72.2
2026.0     0.086     77.4
2027.0     0.112     79.9
2028.0     0.133     81.5
2029.0     0.150     82.7
2030.0     0.164     83.7
2031.0     0.175     84.5
2032.0     0.184     85.3
2033.0     0.191     86.0
2034.0     0.197     86.6
2035.0     0.201     87.2
2036.0     0.203     87.8
2037.0     0.205     88.4
2038.0     0.206     88.9
2039.0     0.205     89.5
2040.0     0.204     90.1
2041.0     0.202     90.7
2042.0     0.200     91.3
2043.0     0.196     91.9
2044.0     0.192     92.5
2045.0     0.188     93.2
2046.0     0.183     93.9
2047.0     0.177     94.6
2048.0     0.172     95.4
2049.0     0.165     96.2
2050.0     0.159     97.2
2051.0     0.151     98.2
2052.0     0.144     99.3
2053.0     0.136    100.5

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.