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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:03

Orbital Elements for GC21088

WDS:	GC21088	WDS ID/Discoverer
P:	1.935	Orbital period (years)
a:	0.0073	Semi-major axis (arcseconds)
i:	110.15	Inclination (degrees)
Ω:	121.14	Longitude of ascending node (degrees)
T:	1991.949	Epoch of periastron passage (year)
e:	0.0	Eccentricity
ω:	0.0	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 GC21088

Position:	154021.44+435046.4	Epoch-2000 right ascension and declination
WDS-ID:	15404+4351	WDS designation
Discoverer Code:	GC21088	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	140139	HD catalog number
Hipparcos number:	76752	Hipparcos catalog number
V1:	7.17	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:		Flags

Double Star Orbit for GC21088

WDS 6th Orbit including measures of GC21088

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

Ephemeris of GC21088

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.006    109.6
-------------------------

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.