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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:31:01

Orbital Elements for A1120

WDS:	A1120	WDS ID/Discoverer
P:	51.750	Orbital period (years)
a:	0.161	Semi-major axis (arcseconds)
i:	60.9	Inclination (degrees)
Ω:	156.3	Longitude of ascending node (degrees)
T:	1932.360	Epoch of periastron passage (year)
e:	0.755	Eccentricity
ω:	345.3	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1120

Position:	152718.03+094201.1	Epoch-2000 right ascension and declination
WDS-ID:	15273+0942	WDS designation
Discoverer Code:	A1120	Discover designation and components
ADS number:	9643	Aitken Double Star catalog
HD number:	137723	HD catalog number
Hipparcos number:	75645	Hipparcos catalog number
V1:	8.5	Magnitude of the primary
V2:	9.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A1120

WDS 6th Orbit including measures of A1120

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

Ephemeris of A1120

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.208    342.3
-------------------------
2000.0     0.226    320.2
2001.0     0.234    321.3
2002.0     0.242    322.3
2003.0     0.249    323.3
2004.0     0.255    324.2
2005.0     0.260    325.1
2006.0     0.264    325.9
2007.0     0.268    326.7
2008.0     0.271    327.5
2009.0     0.274    328.3
2010.0     0.276    329.0
2011.0     0.277    329.8
2012.0     0.277    330.5
2013.0     0.277    331.3
2014.0     0.275    332.1
2015.0     0.274    332.8
2016.0     0.271    333.6
2017.0     0.268    334.4
2018.0     0.263    335.2
2019.0     0.258    336.0
2020.0     0.252    336.9
2021.0     0.246    337.9
2022.0     0.238    338.8
2023.0     0.229    339.9
2024.0     0.219    341.0
2025.0     0.208    342.3
2026.0     0.196    343.7
2027.0     0.183    345.3
2028.0     0.168    347.2
2029.0     0.151    349.4
2030.0     0.132    352.3
2031.0     0.112    356.2
2032.0     0.089      1.9
2033.0     0.064     12.1
2034.0     0.038     36.0
2035.0     0.027    101.6
2036.0     0.040    154.3
2037.0     0.038    190.2
2038.0     0.038    231.4
2039.0     0.049    263.0
2040.0     0.066    280.8
2041.0     0.084    291.2
2042.0     0.102    297.9
2043.0     0.118    302.7
2044.0     0.134    306.3
2045.0     0.149    309.1
2046.0     0.163    311.5
2047.0     0.176    313.5
2048.0     0.188    315.2
2049.0     0.200    316.8

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.