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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:37:06

Orbital Elements for MCA33

WDS:	MCA33	WDS ID/Discoverer
P:	6.650	Orbital period (years)
a:	0.055	Semi-major axis (arcseconds)
i:	55.4	Inclination (degrees)
Ω:	118.3	Longitude of ascending node (degrees)
T:	2001.228	Epoch of periastron passage (year)
e:	0.706	Eccentricity
ω:	8.3	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA33

Position:	080142.49+601927.9	Epoch-2000 right ascension and declination
WDS-ID:	08017+6019	WDS designation
Discoverer Code:	MCA33	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	65339	HD catalog number
Hipparcos number:	39261	Hipparcos catalog number
V1:	6.3	Magnitude of the primary
V2:	7.5	Magnitude of the secondary
Equinox:		Equinox
Date:	1999	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA33

WDS 6th Orbit including measures of MCA33

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

Ephemeris of MCA33

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.090    306.9
-------------------------
2022.0     0.043    272.3
2023.0     0.078    290.4
2024.0     0.092    299.2
2025.0     0.090    306.9
2026.0     0.073    316.6
2027.0     0.038    339.3

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.