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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:45:43

Orbital Elements for MCA47

WDS:	MCA47	WDS ID/Discoverer
P:	5.530	Orbital period (years)
a:	0.07440999999999999	Semi-major axis (arcseconds)
i:	56.4	Inclination (degrees)
Ω:	141.96	Longitude of ascending node (degrees)
T:	2002.966	Epoch of periastron passage (year)
e:	0.67974	Eccentricity
ω:	222.5	Longitude of periastron (degrees)
Start-Year:	2023.0	Year
End-Year:	2027.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA47

Position:	172143.61+395829.3	Epoch-2000 right ascension and declination
WDS-ID:	17217+3958	WDS designation
Discoverer Code:	MCA47	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	157482	HD catalog number
Hipparcos number:	84949	Hipparcos catalog number
V1:	6.10	Magnitude of the primary
V2:	6.42	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2006	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA47

WDS 6th Orbit including measures of MCA47

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

Ephemeris of MCA47

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.026    324.8
-------------------------
2023.0     0.088    179.6
2024.0     0.052    210.7
2025.0     0.026    324.8
2026.0     0.082    142.5

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.