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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:33:12

Orbital Elements for BEU3

WDS:	BEU3	WDS ID/Discoverer
P:	13.328	Orbital period (years)
a:	0.4955	Semi-major axis (arcseconds)
i:	91.771	Inclination (degrees)
Ω:	102.987	Longitude of ascending node (degrees)
T:	2027.405	Epoch of periastron passage (year)
e:	0.3771	Eccentricity
ω:	245.62	Longitude of periastron (degrees)
Start-Year:	2019.0	Year
End-Year:	2031.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BEU3

Position:	020504.84-173652.6	Epoch-2000 right ascension and declination
WDS-ID:	02051-1737	WDS designation
Discoverer Code:	BEU3	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	9724	Hipparcos catalog number
V1:	5.57	Magnitude of the primary
V2:	9.39	Magnitude of the secondary
Equinox:		Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BEU3

WDS 6th Orbit including measures of BEU3

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

Ephemeris of BEU3

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.353    284.7
-------------------------
2019.0     0.484    101.4
2020.0     0.381    100.4
2021.0     0.245     98.4
2022.0     0.089     89.7
2023.0     0.081    296.8
2024.0     0.234    286.9
2025.0     0.353    284.7
2026.0     0.384    283.3
2027.0     0.243    281.5
2028.0     0.072    110.9
2029.0     0.352    104.0
2030.0     0.501    103.0

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.