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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:00:16

Orbital Elements for MCA53AA,AB

WDS:	MCA53AA,AB	WDS ID/Discoverer
P:	41.280	Orbital period (years)
a:	0.103	Semi-major axis (arcseconds)
i:	127.3	Inclination (degrees)
Ω:	164.8	Longitude of ascending node (degrees)
T:	2012.500	Epoch of periastron passage (year)
e:	0.666	Eccentricity
ω:	358.0	Longitude of periastron (degrees)
Start-Year:	2005.0	Year
End-Year:	2045.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA53AA,AB

Position:	184628.58-005741.9	Epoch-2000 right ascension and declination
WDS-ID:	18465-0058	WDS designation
Discoverer Code:	MCA53AA,AB	Discover designation and components
ADS number:	11667	Aitken Double Star catalog
HD number:	173654	HD catalog number
Hipparcos number:	92117	Hipparcos catalog number
V1:	5.88	Magnitude of the primary
V2:	6.8	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA53AA,AB

WDS 6th Orbit including measures of MCA53AA,AB

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

Ephemeris of MCA53AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.145    359.0
-------------------------
2005.0     0.103    319.9
2006.0     0.091    315.5
2007.0     0.078    309.7
2008.0     0.064    301.4
2009.0     0.050    288.4
2010.0     0.037    265.6
2011.0     0.031    226.9
2012.0     0.033    184.2
2013.0     0.034    148.2
2014.0     0.032    108.2
2015.0     0.037     70.5
2016.0     0.048     46.7
2017.0     0.062     32.8
2018.0     0.076     23.9
2019.0     0.088     17.6
2020.0     0.100     12.9
2021.0     0.111      9.2
2022.0     0.121      6.1
2023.0     0.130      3.4
2024.0     0.138      1.1
2025.0     0.145    359.0
2026.0     0.151    357.1
2027.0     0.156    355.3
2028.0     0.161    353.7
2029.0     0.164    352.1
2030.0     0.167    350.6
2031.0     0.169    349.1
2032.0     0.171    347.6
2033.0     0.172    346.2
2034.0     0.171    344.8
2035.0     0.171    343.4
2036.0     0.169    341.9
2037.0     0.166    340.4
2038.0     0.163    338.9
2039.0     0.159    337.3
2040.0     0.154    335.6
2041.0     0.149    333.8
2042.0     0.142    331.8
2043.0     0.135    329.6
2044.0     0.126    327.2

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.