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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:35:42

Orbital Elements for HDS318

WDS:	HDS318	WDS ID/Discoverer
P:	6.937	Orbital period (years)
a:	0.099	Semi-major axis (arcseconds)
i:	49.9	Inclination (degrees)
Ω:	16.0	Longitude of ascending node (degrees)
T:	2015.822	Epoch of periastron passage (year)
e:	0.291	Eccentricity
ω:	2.8	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS318

Position:	022609.51+342810.5	Epoch-2000 right ascension and declination
WDS-ID:	02262+3428	WDS designation
Discoverer Code:	HDS318	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	15013	HD catalog number
Hipparcos number:	11352	Hipparcos catalog number
V1:	8.70	Magnitude of the primary
V2:	9.14	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS318

WDS 6th Orbit including measures of HDS318

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

Ephemeris of HDS318

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.105    171.0
-------------------------
2022.0     0.059    322.3
2023.0     0.067     33.7
2024.0     0.062    122.5
2025.0     0.105    171.0
2026.0     0.127    193.4
2027.0     0.116    213.7

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.