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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:25:22

Orbital Elements for MCA40

WDS:	MCA40	WDS ID/Discoverer
P:	9.151	Orbital period (years)
a:	0.071	Semi-major axis (arcseconds)
i:	107.4	Inclination (degrees)
Ω:	79.0	Longitude of ascending node (degrees)
T:	2003.660	Epoch of periastron passage (year)
e:	0.049	Eccentricity
ω:	265.0	Longitude of periastron (degrees)
Start-Year:	2021.0	Year
End-Year:	2029.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA40

Position:	144021.88+215832.8	Epoch-2000 right ascension and declination
WDS-ID:	14404+2159	WDS designation
Discoverer Code:	MCA40	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	129132	HD catalog number
Hipparcos number:	71729	Hipparcos catalog number
V1:	6.05	Magnitude of the primary
V2:	7.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA40

WDS 6th Orbit including measures of MCA40

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

Ephemeris of MCA40

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.064     69.5
-------------------------
2021.0     0.051    243.1
2022.0     0.021    180.1
2023.0     0.046     98.8
2024.0     0.070     81.8
2025.0     0.064     69.5
2026.0     0.037     45.4
2027.0     0.026    314.7
2028.0     0.056    274.1

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.