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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:27:23

Orbital Elements for MEL2BA,BB

WDS:	MEL2BA,BB	WDS ID/Discoverer
P:	2.371	Orbital period (years)
a:	0.09362000000000001	Semi-major axis (arcseconds)
i:	32.65	Inclination (degrees)
Ω:	142.6	Longitude of ascending node (degrees)
T:	2012.635	Epoch of periastron passage (year)
e:	0.3184	Eccentricity
ω:	81.18	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 MEL2BA,BB

Position:	145430.38+160608.2	Epoch-2000 right ascension and declination
WDS-ID:	14545+1606	WDS designation
Discoverer Code:	MEL2BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	16.0	Magnitude of the primary
V2:	16.4	Magnitude of the secondary
Equinox:		Equinox
Date:	2014	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MEL2BA,BB

WDS 6th Orbit including measures of MEL2BA,BB

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

Ephemeris of MEL2BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.096    335.4
-------------------------
2024.0     0.091    116.9
2025.0     0.096    335.4

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.