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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:44:15

Orbital Elements for A2906AB

WDS:	A2906AB	WDS ID/Discoverer
P:	85.782	Orbital period (years)
a:	0.17508	Semi-major axis (arcseconds)
i:	135.627	Inclination (degrees)
Ω:	11.385	Longitude of ascending node (degrees)
T:	1973.110	Epoch of periastron passage (year)
e:	0.91937	Eccentricity
ω:	81.255	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2906AB

Position:	025252.03+525950.6	Epoch-2000 right ascension and declination
WDS-ID:	02529+5300	WDS designation
Discoverer Code:	A2906AB	Discover designation and components
ADS number:	2185	Aitken Double Star catalog
HD number:	17743	HD catalog number
Hipparcos number:	13424	Hipparcos catalog number
V1:	7.26	Magnitude of the primary
V2:	8.78	Magnitude of the secondary
Equinox:		Equinox
Date:	2005	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2906AB

WDS 6th Orbit including measures of A2906AB

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

Ephemeris of A2906AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.234    107.9
-------------------------
1983.0     0.149    140.7
1984.0     0.156    139.2
1985.0     0.163    137.7
1986.0     0.169    136.4
1987.0     0.175    135.2
1988.0     0.181    134.1
1989.0     0.186    133.0
1990.0     0.191    132.0
1991.0     0.196    131.0
1992.0     0.200    130.1
1993.0     0.204    129.2
1994.0     0.208    128.3
1995.0     0.211    127.5
1996.0     0.215    126.7
1997.0     0.218    125.9
1998.0     0.221    125.2
1999.0     0.224    124.5
2000.0     0.226    123.8
2001.0     0.229    123.1
2002.0     0.231    122.4
2003.0     0.233    121.7
2004.0     0.235    121.0
2005.0     0.236    120.4
2006.0     0.238    119.7
2007.0     0.239    119.1
2008.0     0.240    118.5
2009.0     0.241    117.8
2010.0     0.242    117.2
2011.0     0.242    116.6
2012.0     0.243    116.0
2013.0     0.243    115.4
2014.0     0.243    114.8
2015.0     0.243    114.1
2016.0     0.243    113.5
2017.0     0.243    112.9
2018.0     0.242    112.3
2019.0     0.241    111.7
2020.0     0.241    111.1
2021.0     0.240    110.4
2022.0     0.238    109.8
2023.0     0.237    109.2
2024.0     0.236    108.5
2025.0     0.234    107.9
2026.0     0.232    107.2
2027.0     0.230    106.5
2028.0     0.228    105.8
2029.0     0.226    105.1
2030.0     0.224    104.4
2031.0     0.221    103.7
2032.0     0.218    102.9
2033.0     0.215    102.2
2034.0     0.212    101.4
2035.0     0.209    100.5
2036.0     0.205     99.7
2037.0     0.201     98.8
2038.0     0.197     97.9
2039.0     0.193     97.0
2040.0     0.189     96.0
2041.0     0.184     94.9
2042.0     0.179     93.8
2043.0     0.174     92.7
2044.0     0.169     91.4
2045.0     0.163     90.1
2046.0     0.157     88.7
2047.0     0.150     87.2
2048.0     0.144     85.5
2049.0     0.136     83.7
2050.0     0.129     81.6
2051.0     0.121     79.3
2052.0     0.112     76.6
2053.0     0.103     73.4
2054.0     0.092     69.6
2055.0     0.081     64.8
2056.0     0.068     58.3
2057.0     0.054     48.5
2058.0     0.035     29.6
2059.0     0.011    257.2
2060.0     0.042    181.0
2061.0     0.063    167.5
2062.0     0.079    160.2
2063.0     0.093    155.3
2064.0     0.105    151.6
2065.0     0.116    148.6
2066.0     0.125    146.1

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.