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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:37:34

Orbital Elements for A225

WDS:	A225	WDS ID/Discoverer
P:	43.340	Orbital period (years)
a:	0.129	Semi-major axis (arcseconds)
i:	114.4	Inclination (degrees)
Ω:	117.5	Longitude of ascending node (degrees)
T:	2005.900	Epoch of periastron passage (year)
e:	0.489	Eccentricity
ω:	183.1	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 A225

Position:	161949.63+264638.7	Epoch-2000 right ascension and declination
WDS-ID:	16198+2647	WDS designation
Discoverer Code:	A225	Discover designation and components
ADS number:	10007	Aitken Double Star catalog
HD number:	147251	HD catalog number
Hipparcos number:	79999	Hipparcos catalog number
V1:	10.04	Magnitude of the primary
V2:	9.79	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A225

WDS 6th Orbit including measures of A225

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

Ephemeris of A225

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.189    119.7
-------------------------
2004.0     0.056    320.3
2005.0     0.064    306.7
2006.0     0.066    295.1
2007.0     0.060    282.6
2008.0     0.050    266.0
2009.0     0.041    240.9
2010.0     0.039    208.4
2011.0     0.048    181.1
2012.0     0.062    164.0
2013.0     0.077    153.4
2014.0     0.092    146.4
2015.0     0.107    141.4
2016.0     0.120    137.5
2017.0     0.133    134.4
2018.0     0.144    131.8
2019.0     0.154    129.5
2020.0     0.163    127.6
2021.0     0.171    125.8
2022.0     0.177    124.1
2023.0     0.182    122.6
2024.0     0.186    121.1
2025.0     0.189    119.7
2026.0     0.191    118.3
2027.0     0.192    117.0
2028.0     0.192    115.6
2029.0     0.190    114.3
2030.0     0.187    112.9
2031.0     0.184    111.4
2032.0     0.179    109.9
2033.0     0.173    108.3
2034.0     0.166    106.6
2035.0     0.157    104.7
2036.0     0.148    102.5
2037.0     0.138    100.1
2038.0     0.126     97.2
2039.0     0.113     93.7
2040.0     0.100     89.3
2041.0     0.086     83.5
2042.0     0.071     75.4
2043.0     0.057     63.1
2044.0     0.046     43.8
2045.0     0.041     16.2

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.