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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:58:17

Orbital Elements for MCA14AA,AB

WDS:	MCA14AA,AB	WDS ID/Discoverer
P:	11.363	Orbital period (years)
a:	0.13538999999999998	Semi-major axis (arcseconds)
i:	123.88	Inclination (degrees)
Ω:	352.25	Longitude of ascending node (degrees)
T:	1955.100	Epoch of periastron passage (year)
e:	0.1537	Eccentricity
ω:	342.61	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA14AA,AB

Position:	041823.14+213445.8	Epoch-2000 right ascension and declination
WDS-ID:	04184+2135	WDS designation
Discoverer Code:	MCA14AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27176	HD catalog number
Hipparcos number:	20087	Hipparcos catalog number
V1:	5.60	Magnitude of the primary
V2:	8.1	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA14AA,AB

WDS 6th Orbit including measures of MCA14AA,AB

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

Ephemeris of MCA14AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.094    315.7
-------------------------
2020.0     0.118    145.1
2021.0     0.080    111.1
2022.0     0.075     50.7
2023.0     0.105      9.8
2024.0     0.115    344.5
2025.0     0.094    315.7
2026.0     0.077    268.7
2027.0     0.097    222.8
2028.0     0.130    197.5
2029.0     0.152    181.6

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.