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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:18:56

Orbital Elements for GJ13

WDS:	GJ13	WDS ID/Discoverer
P:	1.126	Orbital period (years)
a:	0.020980000000000002	Semi-major axis (arcseconds)
i:	74.7	Inclination (degrees)
Ω:	352.3	Longitude of ascending node (degrees)
T:	1952.603	Epoch of periastron passage (year)
e:	0.57	Eccentricity
ω:	4.7	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 GJ13

Position:	001653.59-523905.7	Epoch-2000 right ascension and declination
WDS-ID:	00169-5239	WDS designation
Discoverer Code:	GJ13	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	1273	HD catalog number
Hipparcos number:	1349	Hipparcos catalog number
V1:	6.85	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1992	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for GJ13

WDS 6th Orbit including measures of GJ13

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

Ephemeris of GJ13

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.025    165.1
-------------------------

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.