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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:52:39

Orbital Elements for MCA50

WDS:	MCA50	WDS ID/Discoverer
P:	2.414	Orbital period (years)
a:	0.08064	Semi-major axis (arcseconds)
i:	72.83	Inclination (degrees)
Ω:	175.32	Longitude of ascending node (degrees)
T:	2011.241	Epoch of periastron passage (year)
e:	0.4165	Eccentricity
ω:	135.46	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 MCA50

Position:	175714.34+235944.6	Epoch-2000 right ascension and declination
WDS-ID:	17572+2400	WDS designation
Discoverer Code:	MCA50	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	163840	HD catalog number
Hipparcos number:	87895	Hipparcos catalog number
V1:	6.30	Magnitude of the primary
V2:	7.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2015	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA50

WDS 6th Orbit including measures of MCA50

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

Ephemeris of MCA50

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.100    172.6
-------------------------
2024.0     0.031    107.7
2025.0     0.100    172.6

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.