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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:27:32

Orbital Elements for MCA27

WDS:	MCA27	WDS ID/Discoverer
P:	38.900	Orbital period (years)
a:	0.159	Semi-major axis (arcseconds)
i:	119.5	Inclination (degrees)
Ω:	113.5	Longitude of ascending node (degrees)
T:	1976.730	Epoch of periastron passage (year)
e:	0.557	Eccentricity
ω:	343.3	Longitude of periastron (degrees)
Start-Year:	2006.0	Year
End-Year:	2044.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA27

Position:	063823.02+285903.8	Epoch-2000 right ascension and declination
WDS-ID:	06384+2859	WDS designation
Discoverer Code:	MCA27	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	47152	HD catalog number
Hipparcos number:	31737	Hipparcos catalog number
V1:	6.97	Magnitude of the primary
V2:	6.20	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1999	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA27

WDS 6th Orbit including measures of MCA27

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

Ephemeris of MCA27

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.140    327.5
-------------------------
2006.0     0.191    283.8
2007.0     0.177    280.9
2008.0     0.159    277.5
2009.0     0.140    273.3
2010.0     0.118    267.5
2011.0     0.094    258.9
2012.0     0.070    244.5
2013.0     0.050    216.6
2014.0     0.046    172.0
2015.0     0.060    136.6
2016.0     0.071    114.6
2017.0     0.071     96.2
2018.0     0.065     75.5
2019.0     0.060     50.5
2020.0     0.064     25.0
2021.0     0.075      4.6
2022.0     0.090    350.3
2023.0     0.107    340.3
2024.0     0.124    333.0
2025.0     0.140    327.5
2026.0     0.156    323.1
2027.0     0.170    319.5
2028.0     0.184    316.5
2029.0     0.196    313.8
2030.0     0.206    311.5
2031.0     0.216    309.3
2032.0     0.224    307.3
2033.0     0.230    305.5
2034.0     0.236    303.7
2035.0     0.239    302.0
2036.0     0.242    300.4
2037.0     0.243    298.8
2038.0     0.242    297.1
2039.0     0.240    295.5
2040.0     0.236    293.8
2041.0     0.230    292.0
2042.0     0.223    290.2
2043.0     0.214    288.2

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.