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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:45:24

Orbital Elements for BSO13BA,BB

WDS:	BSO13BA,BB	WDS ID/Discoverer
P:	0.241	Orbital period (years)
a:	0.042	Semi-major axis (arcseconds)
i:	59.4	Inclination (degrees)
Ω:	244.5	Longitude of ascending node (degrees)
T:	2015.901	Epoch of periastron passage (year)
e:	0.773	Eccentricity
ω:	165.2	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 BSO13BA,BB

Position:	171902.97-463813.2	Epoch-2000 right ascension and declination
WDS-ID:	17191-4638	WDS designation
Discoverer Code:	BSO13BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	156274	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.0	Magnitude of the primary
V2:	11.0	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:	n	Flags

Double Star Orbit for BSO13BA,BB

WDS 6th Orbit including measures of BSO13BA,BB

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

Ephemeris of BSO13BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.060    247.8
-------------------------

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.