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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:51:13

Orbital Elements for AC7BC

WDS:	AC7BC	WDS ID/Discoverer
P:	43.460	Orbital period (years)
a:	1.402	Semi-major axis (arcseconds)
i:	65.821	Inclination (degrees)
Ω:	61.11	Longitude of ascending node (degrees)
T:	2008.344	Epoch of periastron passage (year)
e:	0.1834	Eccentricity
ω:	172.21	Longitude of periastron (degrees)
Start-Year:	2004.0	Year
End-Year:	2046.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for AC7BC

Position:	174625.07+274301.4	Epoch-2000 right ascension and declination
WDS-ID:	17465+2743	WDS designation
Discoverer Code:	AC7BC	Discover designation and components
ADS number:	10786	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.2	Magnitude of the primary
V2:	10.7	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for AC7BC

WDS 6th Orbit including measures of AC7BC

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

Ephemeris of AC7BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.334     43.4
-------------------------
2004.0     0.760    207.1
2005.0     0.877    216.9
2006.0     0.984    224.5
2007.0     1.069    230.7
2008.0     1.125    236.1
2009.0     1.147    241.2
2010.0     1.134    246.2
2011.0     1.088    251.5
2012.0     1.013    257.4
2013.0     0.917    264.5
2014.0     0.810    273.3
2015.0     0.704    284.8
2016.0     0.617    300.0
2017.0     0.571    318.9
2018.0     0.580    339.0
2019.0     0.643    356.9
2020.0     0.743     10.7
2021.0     0.862     21.0
2022.0     0.987     28.7
2023.0     1.111     34.6
2024.0     1.228     39.4
2025.0     1.334     43.4
2026.0     1.427     46.9
2027.0     1.506     49.9
2028.0     1.569     52.7
2029.0     1.616     55.3
2030.0     1.645     57.7
2031.0     1.656     60.1
2032.0     1.650     62.5
2033.0     1.625     65.0
2034.0     1.582     67.5
2035.0     1.521     70.2
2036.0     1.443     73.2
2037.0     1.349     76.6
2038.0     1.241     80.5
2039.0     1.120     85.2
2040.0     0.989     91.1
2041.0     0.855     98.8
2042.0     0.726    109.4
2043.0     0.617    124.2
2044.0     0.550    143.8
2045.0     0.547    166.0

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.