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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:10:28

Orbital Elements for G121-75

WDS:	G121-75	WDS ID/Discoverer
P:	5.933	Orbital period (years)
a:	0.019600000000000003	Semi-major axis (arcseconds)
i:	51.3	Inclination (degrees)
Ω:	11.8	Longitude of ascending node (degrees)
T:	1996.138	Epoch of periastron passage (year)
e:	0.41	Eccentricity
ω:	302.6	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 G121-75

Position:	121900.84+280252.7	Epoch-2000 right ascension and declination
WDS-ID:	12190+2803	WDS designation
Discoverer Code:	G121-75	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	60061	Hipparcos catalog number
V1:	8.95	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	1992	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for G121-75

WDS 6th Orbit including measures of G121-75

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

Ephemeris of G121-75

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.016    209.5
-------------------------
2023.0     0.022    152.3
2024.0     0.023    177.4
2025.0     0.016    209.5
2026.0     0.011    354.1

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.