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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:54:15

Orbital Elements for WSGRAA1,2

WDS:	WSGRAA1,2	WDS ID/Discoverer
P:	4.331	Orbital period (years)
a:	0.00267	Semi-major axis (arcseconds)
i:	7.0	Inclination (degrees)
Ω:	68.4	Longitude of ascending node (degrees)
T:	2004.160	Epoch of periastron passage (year)
e:	0.41	Eccentricity
ω:	328.0	Longitude of periastron (degrees)
Start-Year:	2023.0	Year
End-Year:	2027.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for WSGRAA1,2

Position:	180501.22-293448.3	Epoch-2000 right ascension and declination
WDS-ID:	18050-2935	WDS designation
Discoverer Code:	WSGRAA1,2	Discover designation and components
ADS number:	11029	Aitken Double Star catalog
HD number:	164975	HD catalog number
Hipparcos number:	88567	Hipparcos catalog number
V1:	4.66	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WSGRAA1,2

WDS 6th Orbit including measures of WSGRAA1,2

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

Ephemeris of WSGRAA1,2

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.003    280.8
-------------------------
2023.0     0.003    190.6
2024.0     0.004    230.0
2025.0     0.003    280.8
2026.0     0.002     74.5

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.