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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:35:16

Orbital Elements for LAB3

WDS:	LAB3	WDS ID/Discoverer
P:	10.808	Orbital period (years)
a:	0.099	Semi-major axis (arcseconds)
i:	32.074	Inclination (degrees)
Ω:	353.867	Longitude of ascending node (degrees)
T:	1979.079	Epoch of periastron passage (year)
e:	0.939	Eccentricity
ω:	180.822	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 LAB3

Position:	160020.01-223717.8	Epoch-2000 right ascension and declination
WDS-ID:	16003-2237	WDS designation
Discoverer Code:	LAB3	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	143275	HD catalog number
Hipparcos number:	78401	Hipparcos catalog number
V1:	2.39	Magnitude of the primary
V2:	4.62	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for LAB3

WDS 6th Orbit including measures of LAB3

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

Ephemeris of LAB3

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.159    346.6
-------------------------
2020.0     0.148      4.0
2021.0     0.109      9.8
2022.0     0.041     28.7
2023.0     0.073    332.1
2024.0     0.126    342.0
2025.0     0.159    346.6
2026.0     0.179    349.9
2027.0     0.190    352.7
2028.0     0.192    355.3
2029.0     0.185    358.0

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.