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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:05:08

Orbital Elements for SFN1AA,AB

WDS:	SFN1AA,AB	WDS ID/Discoverer
P:	6.913	Orbital period (years)
a:	0.0328	Semi-major axis (arcseconds)
i:	113.8	Inclination (degrees)
Ω:	179.5	Longitude of ascending node (degrees)
T:	1993.369	Epoch of periastron passage (year)
e:	0.457	Eccentricity
ω:	216.7	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SFN1AA,AB

Position:	045602.03+302103.7	Epoch-2000 right ascension and declination
WDS-ID:	04560+3021	WDS designation
Discoverer Code:	SFN1AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	11.60	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1998	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for SFN1AA,AB

WDS 6th Orbit including measures of SFN1AA,AB

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

Ephemeris of SFN1AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.034    155.2
-------------------------
2022.0     0.024    197.5
2023.0     0.041    179.0
2024.0     0.043    168.3
2025.0     0.034    155.2
2026.0     0.020    125.7
2027.0     0.016     40.4

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.