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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:44:59

Orbital Elements for MCA76

WDS:	MCA76	WDS ID/Discoverer
P:	55.060	Orbital period (years)
a:	0.17	Semi-major axis (arcseconds)
i:	65.6	Inclination (degrees)
Ω:	46.6	Longitude of ascending node (degrees)
T:	2001.830	Epoch of periastron passage (year)
e:	0.1	Eccentricity
ω:	159.7	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA76

Position:	235745.55+250829.3	Epoch-2000 right ascension and declination
WDS-ID:	23578+2508	WDS designation
Discoverer Code:	MCA76	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	224427	HD catalog number
Hipparcos number:	118131	Hipparcos catalog number
V1:	4.66	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1995	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA76

WDS 6th Orbit including measures of MCA76

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

Ephemeris of MCA76

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.144     24.9
-------------------------
1998.0     0.110    199.7
1999.0     0.121    205.6
2000.0     0.131    210.5
2001.0     0.139    214.7
2002.0     0.146    218.5
2003.0     0.151    222.0
2004.0     0.153    225.4
2005.0     0.154    228.7
2006.0     0.152    232.0
2007.0     0.148    235.4
2008.0     0.142    239.1
2009.0     0.135    243.1
2010.0     0.126    247.7
2011.0     0.116    253.0
2012.0     0.106    259.2
2013.0     0.096    266.9
2014.0     0.086    276.4
2015.0     0.078    287.9
2016.0     0.073    301.5
2017.0     0.072    316.4
2018.0     0.075    330.9
2019.0     0.081    343.9
2020.0     0.090    354.7
2021.0     0.100      3.4
2022.0     0.111     10.4
2023.0     0.122     16.1
2024.0     0.133     20.9
2025.0     0.144     24.9
2026.0     0.153     28.5
2027.0     0.162     31.6
2028.0     0.169     34.4
2029.0     0.176     37.0
2030.0     0.180     39.5
2031.0     0.184     41.8
2032.0     0.185     44.1
2033.0     0.186     46.3
2034.0     0.185     48.6
2035.0     0.182     50.9
2036.0     0.177     53.3
2037.0     0.171     55.9
2038.0     0.164     58.6
2039.0     0.155     61.7
2040.0     0.145     65.1
2041.0     0.134     69.1
2042.0     0.122     73.8
2043.0     0.110     79.6
2044.0     0.098     86.8
2045.0     0.086     96.0
2046.0     0.076    107.9
2047.0     0.070    122.7
2048.0     0.067    139.5
2049.0     0.070    156.3
2050.0     0.077    171.0
2051.0     0.086    182.8

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.