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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:19:49

Orbital Elements for MCA67AA,AB

WDS:	MCA67AA,AB	WDS ID/Discoverer
P:	56.930	Orbital period (years)
a:	0.066	Semi-major axis (arcseconds)
i:	120.5	Inclination (degrees)
Ω:	141.8	Longitude of ascending node (degrees)
T:	2001.450	Epoch of periastron passage (year)
e:	0.792	Eccentricity
ω:	262.8	Longitude of periastron (degrees)
Start-Year:	1997.0	Year
End-Year:	2053.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA67AA,AB

Position:	211148.24+595911.8	Epoch-2000 right ascension and declination
WDS-ID:	21118+5959	WDS designation
Discoverer Code:	MCA67AA,AB	Discover designation and components
ADS number:	14749	Aitken Double Star catalog
HD number:	202214	HD catalog number
Hipparcos number:	104642	Hipparcos catalog number
V1:	6.5	Magnitude of the primary
V2:	7.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for MCA67AA,AB

WDS 6th Orbit including measures of MCA67AA,AB

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

Ephemeris of MCA67AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.063     76.6
-------------------------
1997.0     0.038    349.7
1998.0     0.035    343.4
1999.0     0.030    335.4
2000.0     0.023    323.7
2001.0     0.012    294.7
2002.0     0.011    175.3
2003.0     0.024    145.7
2004.0     0.033    135.3
2005.0     0.039    128.8
2006.0     0.044    123.9
2007.0     0.048    119.9
2008.0     0.051    116.4
2009.0     0.053    113.2
2010.0     0.055    110.4
2011.0     0.057    107.7
2012.0     0.059    105.1
2013.0     0.060    102.7
2014.0     0.061    100.3
2015.0     0.062     98.1
2016.0     0.062     95.8
2017.0     0.063     93.6
2018.0     0.063     91.5
2019.0     0.063     89.3
2020.0     0.063     87.2
2021.0     0.063     85.1
2022.0     0.063     83.0
2023.0     0.063     80.9
2024.0     0.063     78.7
2025.0     0.063     76.6
2026.0     0.063     74.4
2027.0     0.063     72.3
2028.0     0.062     70.1
2029.0     0.062     67.8
2030.0     0.061     65.6
2031.0     0.061     63.3
2032.0     0.060     61.0
2033.0     0.060     58.6
2034.0     0.059     56.2
2035.0     0.059     53.8
2036.0     0.058     51.3
2037.0     0.058     48.7
2038.0     0.057     46.1
2039.0     0.056     43.4
2040.0     0.056     40.7
2041.0     0.055     37.9
2042.0     0.054     35.0
2043.0     0.053     32.1
2044.0     0.053     29.0
2045.0     0.052     25.9
2046.0     0.051     22.6
2047.0     0.050     19.2
2048.0     0.049     15.7
2049.0     0.048     12.0
2050.0     0.046      8.2
2051.0     0.045      4.0
2052.0     0.043    359.6

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.