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

Double Star Calculator - Orbit

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

Orbital Elements for SNA18

WDS:	SNA18	WDS ID/Discoverer
P:	0.532	Orbital period (years)
a:	0.001224	Semi-major axis (arcseconds)
i:	22.0	Inclination (degrees)
Ω:	59.0	Longitude of ascending node (degrees)
T:	2009.071	Epoch of periastron passage (year)
e:	0.217	Eccentricity
ω:	171.0	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 SNA18

Position:	104445.04-593354.7	Epoch-2000 right ascension and declination
WDS-ID:	10448-5934	WDS designation
Discoverer Code:	SNA18	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	93250	HD catalog number
Hipparcos number:	52558	Hipparcos catalog number
V1:	7.4 k	Magnitude of the primary
V2:	7.6 k	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for SNA18

WDS 6th Orbit including measures of SNA18

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

Ephemeris of SNA18

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.001    199.1
-------------------------

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.