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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:23:59

Orbital Elements for A2307

WDS:	A2307	WDS ID/Discoverer
P:	57.780	Orbital period (years)
a:	0.233	Semi-major axis (arcseconds)
i:	74.3	Inclination (degrees)
Ω:	222.4	Longitude of ascending node (degrees)
T:	2012.510	Epoch of periastron passage (year)
e:	0.419	Eccentricity
ω:	357.9	Longitude of periastron (degrees)
Start-Year:	1997.0	Year
End-Year:	2053.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2307

Position:	005319.51+040510.7	Epoch-2000 right ascension and declination
WDS-ID:	00533+0405	WDS designation
Discoverer Code:	A2307	Discover designation and components
ADS number:	732	Aitken Double Star catalog
HD number:	5143	HD catalog number
Hipparcos number:	4176	Hipparcos catalog number
V1:	7.55	Magnitude of the primary
V2:	8.79	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2307

WDS 6th Orbit including measures of A2307

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

Ephemeris of A2307

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.147     19.4
-------------------------
1997.0     0.219     55.2
1998.0     0.201     57.1
1999.0     0.181     59.4
2000.0     0.161     62.2
2001.0     0.140     65.9
2002.0     0.118     71.0
2003.0     0.095     78.4
2004.0     0.075     90.1
2005.0     0.058    109.7
2006.0     0.051    139.2
2007.0     0.058    168.7
2008.0     0.074    188.5
2009.0     0.093    200.6
2010.0     0.111    208.6
2011.0     0.125    214.6
2012.0     0.134    219.5
2013.0     0.135    224.1
2014.0     0.129    228.8
2015.0     0.117    234.2
2016.0     0.101    241.2
2017.0     0.083    251.0
2018.0     0.066    266.4
2019.0     0.054    290.5
2020.0     0.054    320.1
2021.0     0.066    344.1
2022.0     0.084    359.3
2023.0     0.105      8.7
2024.0     0.126     15.0
2025.0     0.147     19.4
2026.0     0.168     22.8
2027.0     0.188     25.4
2028.0     0.206     27.6
2029.0     0.223     29.4
2030.0     0.239     30.9
2031.0     0.254     32.3
2032.0     0.268     33.5
2033.0     0.280     34.6
2034.0     0.291     35.7
2035.0     0.300     36.6
2036.0     0.308     37.5
2037.0     0.315     38.4
2038.0     0.321     39.2
2039.0     0.325     40.0
2040.0     0.328     40.8
2041.0     0.330     41.5
2042.0     0.331     42.3
2043.0     0.330     43.1
2044.0     0.327     43.8
2045.0     0.324     44.6
2046.0     0.319     45.4
2047.0     0.313     46.2
2048.0     0.305     47.1
2049.0     0.296     48.0
2050.0     0.286     49.0
2051.0     0.275     50.1
2052.0     0.262     51.2

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.