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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:47:42

Orbital Elements for SS73-90

WDS:	SS73-90	WDS ID/Discoverer
P:	2.459	Orbital period (years)
a:	0.00016	Semi-major axis (arcseconds)
i:	96.7	Inclination (degrees)
Ω:	74.8	Longitude of ascending node (degrees)
T:	2003.013	Epoch of periastron passage (year)
e:	0.165	Eccentricity
ω:	41.5	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 SS73-90

Position:	173417.22-190923.0	Epoch-2000 right ascension and declination
WDS-ID:	17343-1909	WDS designation
Discoverer Code:	SS73-90	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	13.52	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:	2007	Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SS73-90

WDS 6th Orbit including measures of SS73-90

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

Ephemeris of SS73-90

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.000     73.3
-------------------------
2024.0     0.000    246.6
2025.0     0.000     73.3

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.