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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:14:52

Orbital Elements for EVT3

WDS:	EVT3	WDS ID/Discoverer
P:	0.594	Orbital period (years)
a:	0.0337	Semi-major axis (arcseconds)
i:	57.5	Inclination (degrees)
Ω:	201.8	Longitude of ascending node (degrees)
T:	2005.110	Epoch of periastron passage (year)
e:	0.3	Eccentricity
ω:	114.5	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for EVT3

Position:	130349.65-050942.5	Epoch-2000 right ascension and declination
WDS-ID:	13038-0510	WDS designation
Discoverer Code:	EVT3	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	113449	HD catalog number
Hipparcos number:	63742	Hipparcos catalog number
V1:	5.72k	Magnitude of the primary
V2:	7.0 k	Magnitude of the secondary
Equinox:		Equinox
Date:	2010	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for EVT3

WDS 6th Orbit including measures of EVT3

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

Ephemeris of EVT3

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.028    150.2
-------------------------

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.