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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:55

Orbital Elements for L408-123

WDS:	L408-123	WDS ID/Discoverer
P:	9.870	Orbital period (years)
a:	0.0362	Semi-major axis (arcseconds)
i:	89.95	Inclination (degrees)
Ω:	154.16	Longitude of ascending node (degrees)
T:	1994.010	Epoch of periastron passage (year)
e:	0.51	Eccentricity
ω:	191.57	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for L408-123

Position:	154541.66-433028.3	Epoch-2000 right ascension and declination
WDS-ID:	15457-4330	WDS designation
Discoverer Code:	L408-123	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	13.05	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for L408-123

WDS 6th Orbit including measures of L408-123

Ephemeris of L408-123

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.017    154.1
-------------------------
2021.0     0.031    154.2
2022.0     0.011    154.3
2023.0     0.012    334.1
2024.0     0.011    334.2
2025.0     0.017    154.1
2026.0     0.038    154.1
2027.0     0.050    154.2
2028.0     0.054    154.2

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.