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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:59

Orbital Elements for GC21035

WDS:	GC21035	WDS ID/Discoverer
P:	2.447	Orbital period (years)
a:	0.00671	Semi-major axis (arcseconds)
i:	70.39	Inclination (degrees)
Ω:	28.94	Longitude of ascending node (degrees)
T:	1989.018	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 GC21035

Position:	154010.96-565452.3	Epoch-2000 right ascension and declination
WDS-ID:	15402-5655	WDS designation
Discoverer Code:	GC21035	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	139312	HD catalog number
Hipparcos number:	76734	Hipparcos catalog number
V1:	6.66	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 GC21035

WDS 6th Orbit including measures of GC21035

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

Ephemeris of GC21035

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.003    256.1
-------------------------
2024.0     0.003    158.8
2025.0     0.003    256.1

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.