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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:44:58

Orbital Elements for A2611

WDS:	A2611	WDS ID/Discoverer
P:	75.280	Orbital period (years)
a:	0.14	Semi-major axis (arcseconds)
i:	23.4	Inclination (degrees)
Ω:	53.3	Longitude of ascending node (degrees)
T:	1954.110	Epoch of periastron passage (year)
e:	0.577	Eccentricity
ω:	316.5	Longitude of periastron (degrees)
Start-Year:	1988.0	Year
End-Year:	2062.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2611

Position:	030020.37-111739.3	Epoch-2000 right ascension and declination
WDS-ID:	03003-1118	WDS designation
Discoverer Code:	A2611	Discover designation and components
ADS number:	2283	Aitken Double Star catalog
HD number:	18740	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.7	Magnitude of the primary
V2:	9.7	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for A2611

WDS 6th Orbit including measures of A2611

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

Ephemeris of A2611

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.077    291.8
-------------------------
1988.0     0.209    186.3
1989.0     0.210    187.9
1990.0     0.211    189.5
1991.0     0.212    191.1
1992.0     0.212    192.6
1993.0     0.213    194.2
1994.0     0.213    195.7
1995.0     0.213    197.3
1996.0     0.212    198.8
1997.0     0.212    200.4
1998.0     0.211    202.0
1999.0     0.210    203.6
2000.0     0.209    205.2
2001.0     0.207    206.8
2002.0     0.205    208.4
2003.0     0.203    210.1
2004.0     0.201    211.8
2005.0     0.198    213.6
2006.0     0.196    215.4
2007.0     0.192    217.3
2008.0     0.189    219.2
2009.0     0.185    221.2
2010.0     0.181    223.3
2011.0     0.177    225.5
2012.0     0.172    227.8
2013.0     0.167    230.3
2014.0     0.162    232.9
2015.0     0.156    235.7
2016.0     0.150    238.7
2017.0     0.143    242.0
2018.0     0.136    245.6
2019.0     0.128    249.6
2020.0     0.121    254.1
2021.0     0.112    259.3
2022.0     0.104    265.3
2023.0     0.095    272.5
2024.0     0.086    281.1
2025.0     0.077    291.8
2026.0     0.069    305.2
2027.0     0.062    321.9
2028.0     0.057    341.9
2029.0     0.056      3.7
2030.0     0.059     25.1
2031.0     0.063     44.3
2032.0     0.069     60.6
2033.0     0.075     74.3
2034.0     0.081     85.8
2035.0     0.088     95.6
2036.0     0.095    104.0
2037.0     0.102    111.3
2038.0     0.108    117.7
2039.0     0.115    123.4
2040.0     0.121    128.5
2041.0     0.127    133.0
2042.0     0.133    137.2
2043.0     0.139    141.0
2044.0     0.144    144.5
2045.0     0.149    147.8
2046.0     0.155    150.8
2047.0     0.159    153.7
2048.0     0.164    156.4
2049.0     0.169    158.9
2050.0     0.173    161.3
2051.0     0.177    163.6
2052.0     0.181    165.8
2053.0     0.184    167.9
2054.0     0.188    170.0
2055.0     0.191    171.9
2056.0     0.194    173.8
2057.0     0.197    175.7
2058.0     0.199    177.5
2059.0     0.201    179.2
2060.0     0.204    180.9
2061.0     0.205    182.6

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.