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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:03:36

Orbital Elements for A2424

WDS:	A2424	WDS ID/Discoverer
P:	58.100	Orbital period (years)
a:	0.1545	Semi-major axis (arcseconds)
i:	85.3	Inclination (degrees)
Ω:	228.6	Longitude of ascending node (degrees)
T:	2011.050	Epoch of periastron passage (year)
e:	0.345	Eccentricity
ω:	265.1	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2424

Position:	044213.71+025924.2	Epoch-2000 right ascension and declination
WDS-ID:	04422+0259	WDS designation
Discoverer Code:	A2424	Discover designation and components
ADS number:	3395	Aitken Double Star catalog
HD number:	29839	HD catalog number
Hipparcos number:	21880	Hipparcos catalog number
V1:	7.87	Magnitude of the primary
V2:	8.33	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A2424

WDS 6th Orbit including measures of A2424

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

Ephemeris of A2424

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.147    231.2
-------------------------
1996.0     0.125     44.0
1997.0     0.131     44.7
1998.0     0.135     45.4
1999.0     0.139     46.0
2000.0     0.140     46.6
2001.0     0.140     47.1
2002.0     0.139     47.7
2003.0     0.135     48.3
2004.0     0.128     49.0
2005.0     0.119     49.7
2006.0     0.108     50.6
2007.0     0.093     51.7
2008.0     0.076     53.4
2009.0     0.056     56.0
2010.0     0.034     61.9
2011.0     0.013     88.6
2012.0     0.016    198.1
2013.0     0.038    216.6
2014.0     0.060    221.6
2015.0     0.079    223.9
2016.0     0.097    225.4
2017.0     0.111    226.5
2018.0     0.123    227.3
2019.0     0.133    228.0
2020.0     0.140    228.6
2021.0     0.145    229.2
2022.0     0.148    229.7
2023.0     0.150    230.2
2024.0     0.149    230.7
2025.0     0.147    231.2
2026.0     0.144    231.8
2027.0     0.140    232.3
2028.0     0.135    232.9
2029.0     0.128    233.6
2030.0     0.121    234.3
2031.0     0.113    235.1
2032.0     0.105    236.1
2033.0     0.096    237.2
2034.0     0.086    238.6
2035.0     0.076    240.3
2036.0     0.066    242.6
2037.0     0.056    245.7
2038.0     0.045    250.2
2039.0     0.035    257.5
2040.0     0.025    270.5
2041.0     0.018    295.5
2042.0     0.018    333.2
2043.0     0.023      2.2
2044.0     0.032     17.5
2045.0     0.042     25.9
2046.0     0.053     31.0
2047.0     0.063     34.4
2048.0     0.074     36.8
2049.0     0.083     38.7
2050.0     0.093     40.1
2051.0     0.102     41.3
2052.0     0.110     42.3
2053.0     0.118     43.2

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.