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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:55:36

Orbital Elements for A1937AB

WDS:	A1937AB	WDS ID/Discoverer
P:	46.080	Orbital period (years)
a:	0.0974	Semi-major axis (arcseconds)
i:	40.8	Inclination (degrees)
Ω:	31.9	Longitude of ascending node (degrees)
T:	2014.740	Epoch of periastron passage (year)
e:	0.535	Eccentricity
ω:	0.4	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1937AB

Position:	040047.29+050458.2	Epoch-2000 right ascension and declination
WDS-ID:	04008+0505	WDS designation
Discoverer Code:	A1937AB	Discover designation and components
ADS number:	2928	Aitken Double Star catalog
HD number:	25248	HD catalog number
Hipparcos number:	18374	Hipparcos catalog number
V1:	9.38	Magnitude of the primary
V2:	9.48	Magnitude of the secondary
Equinox:		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 A1937AB

WDS 6th Orbit including measures of A1937AB

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

Ephemeris of A1937AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.103    177.3
-------------------------
2002.0     0.119    237.7
2003.0     0.113    241.2
2004.0     0.106    245.2
2005.0     0.098    249.7
2006.0     0.091    255.0
2007.0     0.082    261.4
2008.0     0.074    269.2
2009.0     0.065    279.1
2010.0     0.057    291.8
2011.0     0.051    308.2
2012.0     0.046    328.6
2013.0     0.045    351.6
2014.0     0.045     15.1
2015.0     0.045     38.2
2016.0     0.045     61.6
2017.0     0.045     85.3
2018.0     0.048    107.3
2019.0     0.054    125.7
2020.0     0.061    140.0
2021.0     0.070    151.1
2022.0     0.078    159.8
2023.0     0.087    166.7
2024.0     0.095    172.4
2025.0     0.103    177.3
2026.0     0.110    181.5
2027.0     0.116    185.2
2028.0     0.122    188.5
2029.0     0.128    191.5
2030.0     0.132    194.3
2031.0     0.137    196.9
2032.0     0.140    199.4
2033.0     0.143    201.8
2034.0     0.146    204.0
2035.0     0.147    206.3
2036.0     0.149    208.4
2037.0     0.149    210.5
2038.0     0.149    212.7
2039.0     0.149    214.8
2040.0     0.148    216.9
2041.0     0.147    219.1
2042.0     0.144    221.4
2043.0     0.142    223.7
2044.0     0.138    226.1
2045.0     0.135    228.6
2046.0     0.130    231.3
2047.0     0.125    234.3

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.