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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:40:50

Orbital Elements for HDS3315

WDS:	HDS3315	WDS ID/Discoverer
P:	33.378	Orbital period (years)
a:	0.1311	Semi-major axis (arcseconds)
i:	113.5	Inclination (degrees)
Ω:	23.0	Longitude of ascending node (degrees)
T:	1996.124	Epoch of periastron passage (year)
e:	0.815	Eccentricity
ω:	355.4	Longitude of periastron (degrees)
Start-Year:	2009.0	Year
End-Year:	2041.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3315

Position:	231644.08+344048.6	Epoch-2000 right ascension and declination
WDS-ID:	23167+3441	WDS designation
Discoverer Code:	HDS3315	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	114927	Hipparcos catalog number
V1:	11.25	Magnitude of the primary
V2:	11.75	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS3315

WDS 6th Orbit including measures of HDS3315

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

Ephemeris of HDS3315

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.127    191.0
-------------------------
2009.0     0.225    207.8
2010.0     0.230    207.0
2011.0     0.234    206.2
2012.0     0.236    205.5
2013.0     0.237    204.7
2014.0     0.237    203.9
2015.0     0.235    203.2
2016.0     0.232    202.4
2017.0     0.227    201.6
2018.0     0.221    200.7
2019.0     0.214    199.8
2020.0     0.204    198.8
2021.0     0.193    197.8
2022.0     0.180    196.5
2023.0     0.165    195.1
2024.0     0.147    193.3
2025.0     0.127    191.0
2026.0     0.103    187.8
2027.0     0.075    182.3
2028.0     0.042    168.8
2029.0     0.016     79.8
2030.0     0.019    341.4
2031.0     0.035    248.9
2032.0     0.066    230.6
2033.0     0.093    223.7
2034.0     0.117    219.8
2035.0     0.138    217.2
2036.0     0.156    215.2
2037.0     0.171    213.6
2038.0     0.185    212.2
2039.0     0.197    211.1
2040.0     0.207    210.0

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.