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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:20:15

Orbital Elements for BEU18

WDS:	BEU18	WDS ID/Discoverer
P:	7.408	Orbital period (years)
a:	0.183	Semi-major axis (arcseconds)
i:	127.7	Inclination (degrees)
Ω:	3.4	Longitude of ascending node (degrees)
T:	2023.550	Epoch of periastron passage (year)
e:	0.529	Eccentricity
ω:	165.9	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 BEU18

Position:	135327.56+125633.4	Epoch-2000 right ascension and declination
WDS-ID:	13535+1257	WDS designation
Discoverer Code:	BEU18	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	67808	Hipparcos catalog number
V1:	9.80	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for BEU18

WDS 6th Orbit including measures of BEU18

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

Ephemeris of BEU18

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.141     54.6
-------------------------
2022.0     0.188    342.3
2023.0     0.074    280.0
2024.0     0.084    141.7
2025.0     0.141     54.6
2026.0     0.224     28.6
2027.0     0.270     15.0

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.