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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:32:17

Orbital Elements for GAA21

WDS:	GAA21	WDS ID/Discoverer
P:	0.116	Orbital period (years)
a:	0.00376	Semi-major axis (arcseconds)
i:	71.0	Inclination (degrees)
Ω:	257.6	Longitude of ascending node (degrees)
T:	2007.480	Epoch of periastron passage (year)
e:	0.6228	Eccentricity
ω:	293.965	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 GAA21

Position:	221243.87-044314.4	Epoch-2000 right ascension and declination
WDS-ID:	22127-0443	WDS designation
Discoverer Code:	GAA21	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	210763	HD catalog number
Hipparcos number:	109647	Hipparcos catalog number
V1:	5.4 k	Magnitude of the primary
V2:	7.0 k	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for GAA21

WDS 6th Orbit including measures of GAA21

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

Ephemeris of GAA21

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.000    185.1
-------------------------

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.