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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:07:31

Orbital Elements for MCA57

WDS:	MCA57	WDS ID/Discoverer
P:	1.189	Orbital period (years)
a:	0.0269	Semi-major axis (arcseconds)
i:	80.8	Inclination (degrees)
Ω:	251.0	Longitude of ascending node (degrees)
T:	1936.169	Epoch of periastron passage (year)
e:	0.542	Eccentricity
ω:	34.0	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA57

Position:	193922.60+300911.6	Epoch-2000 right ascension and declination
WDS-ID:	19394+3009	WDS designation
Discoverer Code:	MCA57	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	185734	HD catalog number
Hipparcos number:	96683	Hipparcos catalog number
V1:	4.9 r	Magnitude of the primary
V2:	5.1 r	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA57

WDS 6th Orbit including measures of MCA57

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

Ephemeris of MCA57

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.015     91.2
-------------------------

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.