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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:45:34

Orbital Elements for HDS1337

WDS:	HDS1337	WDS ID/Discoverer
P:	43.700	Orbital period (years)
a:	0.108	Semi-major axis (arcseconds)
i:	107.8	Inclination (degrees)
Ω:	175.6	Longitude of ascending node (degrees)
T:	2013.760	Epoch of periastron passage (year)
e:	0.426	Eccentricity
ω:	216.3	Longitude of periastron (degrees)
Start-Year:	2004.0	Year
End-Year:	2046.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1337

Position:	091457.17-373608.5	Epoch-2000 right ascension and declination
WDS-ID:	09150-3736	WDS designation
Discoverer Code:	HDS1337	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	79807	HD catalog number
Hipparcos number:	45386	Hipparcos catalog number
V1:	6.25	Magnitude of the primary
V2:	7.78	Magnitude of the secondary
Equinox:		Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1337

WDS 6th Orbit including measures of HDS1337

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

Ephemeris of HDS1337

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.126    178.0
-------------------------
2004.0     0.036     89.0
2005.0     0.036     68.4
2006.0     0.039     49.4
2007.0     0.045     34.5
2008.0     0.053     23.3
2009.0     0.060     14.9
2010.0     0.065      8.0
2011.0     0.068      2.0
2012.0     0.066    356.1
2013.0     0.060    349.5
2014.0     0.048    340.4
2015.0     0.033    323.8
2016.0     0.022    285.8
2017.0     0.026    234.1
2018.0     0.041    208.9
2019.0     0.058    197.7
2020.0     0.073    191.5
2021.0     0.087    187.3
2022.0     0.099    184.2
2023.0     0.110    181.8
2024.0     0.119    179.8
2025.0     0.126    178.0
2026.0     0.132    176.4
2027.0     0.136    175.0
2028.0     0.139    173.6
2029.0     0.141    172.2
2030.0     0.142    170.9
2031.0     0.142    169.6
2032.0     0.140    168.2
2033.0     0.138    166.9
2034.0     0.134    165.4
2035.0     0.130    163.9
2036.0     0.125    162.3
2037.0     0.119    160.5
2038.0     0.113    158.5
2039.0     0.105    156.3
2040.0     0.098    153.7
2041.0     0.089    150.7
2042.0     0.080    147.0
2043.0     0.071    142.3
2044.0     0.062    136.3
2045.0     0.053    128.3

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.