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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:11:40

Orbital Elements for GC28055

WDS:	GC28055	WDS ID/Discoverer
P:	2.020	Orbital period (years)
a:	0.01125	Semi-major axis (arcseconds)
i:	105.86	Inclination (degrees)
Ω:	119.25	Longitude of ascending node (degrees)
T:	1989.321	Epoch of periastron passage (year)
e:	0.0	Eccentricity
ω:	0.0	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for GC28055

Position:	201333.86-382651.5	Epoch-2000 right ascension and declination
WDS-ID:	20136-3827	WDS designation
Discoverer Code:	GC28055	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	191889	HD catalog number
Hipparcos number:	99668	Hipparcos catalog number
V1:	6.91	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 GC28055

WDS 6th Orbit including measures of GC28055

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

Ephemeris of GC28055

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.007    275.6
-------------------------
2024.0     0.006     94.1
2025.0     0.007    275.6

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.