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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:14:42

Orbital Elements for BEU16AB

WDS:	BEU16AB	WDS ID/Discoverer
P:	13.709	Orbital period (years)
a:	0.42773	Semi-major axis (arcseconds)
i:	130.79	Inclination (degrees)
Ω:	56.13	Longitude of ascending node (degrees)
T:	2021.412	Epoch of periastron passage (year)
e:	0.2436	Eccentricity
ω:	158.81	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 BEU16AB

Position:	130046.58+122232.6	Epoch-2000 right ascension and declination
WDS-ID:	13008+1223	WDS designation
Discoverer Code:	BEU16AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	63510	Hipparcos catalog number
V1:	9.75	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BEU16AB

WDS 6th Orbit including measures of BEU16AB

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

Ephemeris of BEU16AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.305    132.0
-------------------------
2019.0     0.288    358.2
2020.0     0.238    310.8
2021.0     0.287    264.3
2022.0     0.329    233.1
2023.0     0.311    204.1
2024.0     0.282    168.7
2025.0     0.305    132.0
2026.0     0.374    105.0
2027.0     0.448     86.9
2028.0     0.502     73.5
2029.0     0.524     62.1
2030.0     0.508     50.8

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.