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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:46:38

Orbital Elements for A2244AB

WDS:	A2244AB	WDS ID/Discoverer
P:	44.830	Orbital period (years)
a:	0.17	Semi-major axis (arcseconds)
i:	41.9	Inclination (degrees)
Ω:	272.7	Longitude of ascending node (degrees)
T:	2015.370	Epoch of periastron passage (year)
e:	0.549	Eccentricity
ω:	16.5	Longitude of periastron (degrees)
Start-Year:	2003.0	Year
End-Year:	2047.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2244AB

Position:	172816.19-205749.5	Epoch-2000 right ascension and declination
WDS-ID:	17283-2058	WDS designation
Discoverer Code:	A2244AB	Discover designation and components
ADS number:	10561	Aitken Double Star catalog
HD number:	158122	HD catalog number
Hipparcos number:	85491	Hipparcos catalog number
V1:	8.68	Magnitude of the primary
V2:	8.90	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2244AB

WDS 6th Orbit including measures of A2244AB

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

Ephemeris of A2244AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.189     72.1
-------------------------
2003.0     0.194    132.1
2004.0     0.183    136.2
2005.0     0.171    140.8
2006.0     0.158    146.1
2007.0     0.145    152.4
2008.0     0.132    160.0
2009.0     0.119    169.2
2010.0     0.107    180.6
2011.0     0.096    194.8
2012.0     0.088    211.9
2013.0     0.084    231.5
2014.0     0.081    252.9
2015.0     0.077    275.9
2016.0     0.072    302.0
2017.0     0.069    331.4
2018.0     0.075    359.7
2019.0     0.089     21.6
2020.0     0.106     37.0
2021.0     0.124     48.0
2022.0     0.142     56.2
2023.0     0.159     62.5
2024.0     0.175     67.7
2025.0     0.189     72.1
2026.0     0.201     75.9
2027.0     0.213     79.3
2028.0     0.223     82.3
2029.0     0.232     85.1
2030.0     0.239     87.7
2031.0     0.245     90.2
2032.0     0.250     92.5
2033.0     0.254     94.8
2034.0     0.257     97.0
2035.0     0.259     99.2
2036.0     0.260    101.3
2037.0     0.259    103.4
2038.0     0.258    105.6
2039.0     0.256    107.8
2040.0     0.253    110.0
2041.0     0.248    112.3
2042.0     0.243    114.7
2043.0     0.237    117.2
2044.0     0.230    119.9
2045.0     0.222    122.7
2046.0     0.213    125.7

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.