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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:20:00

Orbital Elements for GC18691

WDS:	GC18691	WDS ID/Discoverer
P:	1.269	Orbital period (years)
a:	0.00818	Semi-major axis (arcseconds)
i:	66.38	Inclination (degrees)
Ω:	23.42	Longitude of ascending node (degrees)
T:	1991.782	Epoch of periastron passage (year)
e:	0.3086	Eccentricity
ω:	217.23	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 GC18691

Position:	134944.98+363758.0	Epoch-2000 right ascension and declination
WDS-ID:	13498+3638	WDS designation
Discoverer Code:	GC18691	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	120600	HD catalog number
Hipparcos number:	67483	Hipparcos catalog number
V1:	6.44	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1991	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for GC18691

WDS 6th Orbit including measures of GC18691

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

Ephemeris of GC18691

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.006      1.9
-------------------------

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.