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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:31:12

Orbital Elements for BAG25AA,AB

WDS:	BAG25AA,AB	WDS ID/Discoverer
P:	2.436	Orbital period (years)
a:	0.1043	Semi-major axis (arcseconds)
i:	54.3	Inclination (degrees)
Ω:	272.47	Longitude of ascending node (degrees)
T:	1980.463	Epoch of periastron passage (year)
e:	0.97525	Eccentricity
ω:	254.898	Longitude of periastron (degrees)
Start-Year:	2024.0	Year
End-Year:	2026.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BAG25AA,AB

Position:	152809.61-092053.1	Epoch-2000 right ascension and declination
WDS-ID:	15282-0921	WDS designation
Discoverer Code:	BAG25AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	137763	HD catalog number
Hipparcos number:	75718	Hipparcos catalog number
V1:	6.9	Magnitude of the primary
V2:	10.2	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for BAG25AA,AB

WDS 6th Orbit including measures of BAG25AA,AB

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

Ephemeris of BAG25AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.117    330.6
-------------------------
2024.0     0.072    354.8
2025.0     0.117    330.6

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.