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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:39:35

Orbital Elements for BNY3AB

WDS:	BNY3AB	WDS ID/Discoverer
P:	8.051	Orbital period (years)
a:	0.03276	Semi-major axis (arcseconds)
i:	20.7	Inclination (degrees)
Ω:	51.4	Longitude of ascending node (degrees)
T:	2012.035	Epoch of periastron passage (year)
e:	0.7961	Eccentricity
ω:	216.9	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 BNY3AB

Position:	163211.80-244021.6	Epoch-2000 right ascension and declination
WDS-ID:	16322-2440	WDS designation
Discoverer Code:	BNY3AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	13.6	Magnitude of the primary
V2:	13.6	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for BNY3AB

WDS 6th Orbit including measures of BNY3AB

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

Ephemeris of BNY3AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.055     94.0
-------------------------
2021.0     0.031     49.0
2022.0     0.047     66.8
2023.0     0.055     77.1
2024.0     0.058     85.6
2025.0     0.055     94.0
2026.0     0.048    104.2
2027.0     0.034    120.7
2028.0     0.009    200.3

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.