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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:40:34

Orbital Elements for HDS3306

WDS:	HDS3306	WDS ID/Discoverer
P:	35.600	Orbital period (years)
a:	0.107	Semi-major axis (arcseconds)
i:	135.7	Inclination (degrees)
Ω:	96.5	Longitude of ascending node (degrees)
T:	2011.190	Epoch of periastron passage (year)
e:	0.8	Eccentricity
ω:	219.2	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3306

Position:	231230.01-234910.1	Epoch-2000 right ascension and declination
WDS-ID:	23125-2349	WDS designation
Discoverer Code:	HDS3306	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	218957	HD catalog number
Hipparcos number:	114568	Hipparcos catalog number
V1:	8.45	Magnitude of the primary
V2:	9.32	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS3306

WDS 6th Orbit including measures of HDS3306

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

Ephemeris of HDS3306

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.173     72.8
-------------------------
2008.0     0.063     13.8
2009.0     0.049    357.7
2010.0     0.036    329.1
2011.0     0.022    268.3
2012.0     0.029    144.0
2013.0     0.057    114.5
2014.0     0.080    103.8
2015.0     0.098     97.5
2016.0     0.113     93.0
2017.0     0.126     89.5
2018.0     0.136     86.7
2019.0     0.145     84.2
2020.0     0.153     81.9
2021.0     0.159     79.9
2022.0     0.164     78.0
2023.0     0.168     76.2
2024.0     0.171     74.5
2025.0     0.173     72.8
2026.0     0.174     71.1
2027.0     0.175     69.5
2028.0     0.174     67.9
2029.0     0.173     66.2
2030.0     0.171     64.5
2031.0     0.168     62.8
2032.0     0.164     61.0
2033.0     0.160     59.1
2034.0     0.155     57.1
2035.0     0.149     54.9
2036.0     0.142     52.6
2037.0     0.135     50.0
2038.0     0.126     47.1
2039.0     0.117     43.7
2040.0     0.107     39.8
2041.0     0.096     34.9

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.