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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:38:01

Orbital Elements for EVT1AA,AB

WDS:	EVT1AA,AB	WDS ID/Discoverer
P:	1.277	Orbital period (years)
a:	0.0255	Semi-major axis (arcseconds)
i:	2.6	Inclination (degrees)
Ω:	86.9	Longitude of ascending node (degrees)
T:	2004.908	Epoch of periastron passage (year)
e:	0.084	Eccentricity
ω:	243.0	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 EVT1AA,AB

Position:	024221.31+383707.2	Epoch-2000 right ascension and declination
WDS-ID:	02424+3837	WDS designation
Discoverer Code:	EVT1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	16760	HD catalog number
Hipparcos number:	12638	Hipparcos catalog number
V1:	7.11k	Magnitude of the primary
V2:	10.0 k	Magnitude of the secondary
Equinox:		Equinox
Date:	2009	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for EVT1AA,AB

WDS 6th Orbit including measures of EVT1AA,AB

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

Ephemeris of EVT1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.026    223.7
-------------------------

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.