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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:38:59

Orbital Elements for OSUMA

WDS:	OSUMA	WDS ID/Discoverer
P:	0.244	Orbital period (years)
a:	0.0016	Semi-major axis (arcseconds)
i:	51.5	Inclination (degrees)
Ω:	177.6	Longitude of ascending node (degrees)
T:	1975.439	Epoch of periastron passage (year)
e:	0.19	Eccentricity
ω:	185.1	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for OSUMA

Position:	081917.15+623025.7	Epoch-2000 right ascension and declination
WDS-ID:	08193+6230	WDS designation
Discoverer Code:	OSUMA	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	69148	HD catalog number
Hipparcos number:	40772	Hipparcos catalog number
V1:	5.73	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	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 OSUMA

WDS 6th Orbit including measures of OSUMA

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

Ephemeris of OSUMA

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.001    123.0
-------------------------

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.