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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:20:24

Orbital Elements for AGC13AB

WDS:	AGC13AB	WDS ID/Discoverer
P:	49.524	Orbital period (years)
a:	0.92224	Semi-major axis (arcseconds)
i:	133.242	Inclination (degrees)
Ω:	161.343	Longitude of ascending node (degrees)
T:	1938.952	Epoch of periastron passage (year)
e:	0.24535	Eccentricity
ω:	116.416	Longitude of periastron (degrees)
Start-Year:	2001.0	Year
End-Year:	2049.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for AGC13AB

Position:	211447.49+380243.1	Epoch-2000 right ascension and declination
WDS-ID:	21148+3803	WDS designation
Discoverer Code:	AGC13AB	Discover designation and components
ADS number:	14787	Aitken Double Star catalog
HD number:	202444	HD catalog number
Hipparcos number:	104887	Hipparcos catalog number
V1:	3.83	Magnitude of the primary
V2:	6.57	Magnitude of the secondary
Equinox:		Equinox
Date:	2013	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for AGC13AB

WDS 6th Orbit including measures of AGC13AB

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

Ephemeris of AGC13AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.990    164.4
-------------------------
2001.0     0.789    297.6
2002.0     0.777    290.9
2003.0     0.766    284.0
2004.0     0.758    277.0
2005.0     0.753    269.8
2006.0     0.753    262.5
2007.0     0.757    255.3
2008.0     0.765    248.2
2009.0     0.779    241.3
2010.0     0.796    234.7
2011.0     0.817    228.3
2012.0     0.840    222.4
2013.0     0.864    216.7
2014.0     0.890    211.4
2015.0     0.915    206.3
2016.0     0.940    201.5
2017.0     0.962    197.0
2018.0     0.982    192.7
2019.0     0.999    188.5
2020.0     1.011    184.4
2021.0     1.019    180.4
2022.0     1.021    176.5
2023.0     1.018    172.5
2024.0     1.007    168.5
2025.0     0.990    164.4
2026.0     0.965    160.1
2027.0     0.933    155.6
2028.0     0.892    150.6
2029.0     0.844    145.2
2030.0     0.789    139.0
2031.0     0.728    131.9
2032.0     0.664    123.4
2033.0     0.601    113.1
2034.0     0.545    100.5
2035.0     0.504     85.4
2036.0     0.486     68.5
2037.0     0.495     51.2
2038.0     0.527     35.4
2039.0     0.575     21.8
2040.0     0.629     10.5
2041.0     0.682      0.9
2042.0     0.728    352.6
2043.0     0.765    345.3
2044.0     0.792    338.5
2045.0     0.809    332.1
2046.0     0.818    325.9
2047.0     0.820    319.8
2048.0     0.815    313.7

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.