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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:41:26

Orbital Elements for SNA51FA,FB

WDS:	SNA51FA,FB	WDS ID/Discoverer
P:	2.386	Orbital period (years)
a:	0.00415	Semi-major axis (arcseconds)
i:	84.7	Inclination (degrees)
Ω:	49.4	Longitude of ascending node (degrees)
T:	2012.954	Epoch of periastron passage (year)
e:	0.543	Eccentricity
ω:	192.0	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 SNA51FA,FB

Position:	165403.58-414729.9	Epoch-2000 right ascension and declination
WDS-ID:	16540-4148	WDS designation
Discoverer Code:	SNA51FA,FB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	152233	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	6.3 k	Magnitude of the primary
V2:	8.3 k	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SNA51FA,FB

WDS 6th Orbit including measures of SNA51FA,FB

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

Ephemeris of SNA51FA,FB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.001    247.2
-------------------------
2024.0     0.005     52.3
2025.0     0.001    247.2

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.