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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:15:09

Orbital Elements for AST3

WDS:	AST3	WDS ID/Discoverer
P:	11.593	Orbital period (years)
a:	0.2729	Semi-major axis (arcseconds)
i:	97.23	Inclination (degrees)
Ω:	51.11	Longitude of ascending node (degrees)
T:	2015.539	Epoch of periastron passage (year)
e:	0.8612	Eccentricity
ω:	230.5	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for AST3

Position:	053319.13+444858.8	Epoch-2000 right ascension and declination
WDS-ID:	05333+4449	WDS designation
Discoverer Code:	AST3	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	12.5	Magnitude of the primary
V2:	14.2	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for AST3

WDS 6th Orbit including measures of AST3

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

Ephemeris of AST3

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.123     30.6
-------------------------
2020.0     0.353     44.1
2021.0     0.336     42.9
2022.0     0.303     41.4
2023.0     0.257     39.6
2024.0     0.197     36.7
2025.0     0.123     30.6
2026.0     0.040      0.5
2027.0     0.053    234.8
2028.0     0.206     49.7
2029.0     0.300     47.4

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.