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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:21:53

Orbital Elements for BNU9

WDS:	BNU9	WDS ID/Discoverer
P:	1.659	Orbital period (years)
a:	0.0034	Semi-major axis (arcseconds)
i:	136.0	Inclination (degrees)
Ω:	325.5	Longitude of ascending node (degrees)
T:	1965.385	Epoch of periastron passage (year)
e:	0.14	Eccentricity
ω:	311.8	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BNU9

Position:	140851.01+773250.8	Epoch-2000 right ascension and declination
WDS-ID:	14088+7733	WDS designation
Discoverer Code:	BNU9	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	124547	HD catalog number
Hipparcos number:	69112	Hipparcos catalog number
V1:	4.82	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	9	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BNU9

WDS 6th Orbit including measures of BNU9

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

Ephemeris of BNU9

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.002     36.0
-------------------------

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.