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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:02:54

Orbital Elements for HDS599

WDS:	HDS599	WDS ID/Discoverer
P:	50.130	Orbital period (years)
a:	0.3174	Semi-major axis (arcseconds)
i:	76.5	Inclination (degrees)
Ω:	153.9	Longitude of ascending node (degrees)
T:	2004.180	Epoch of periastron passage (year)
e:	0.817	Eccentricity
ω:	281.2	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS599

Position:	043853.59-120723.1	Epoch-2000 right ascension and declination
WDS-ID:	04389-1207	WDS designation
Discoverer Code:	HDS599	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	29573	HD catalog number
Hipparcos number:	21644	Hipparcos catalog number
V1:	5.19	Magnitude of the primary
V2:	7.22	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS599

WDS 6th Orbit including measures of HDS599

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

Ephemeris of HDS599

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.143    267.4
-------------------------
2000.0     0.211    324.9
2001.0     0.189    327.4
2002.0     0.157    330.6
2003.0     0.106    336.2
2004.0     0.018     25.2
2005.0     0.087    153.1
2006.0     0.125    161.5
2007.0     0.140    167.0
2008.0     0.146    171.7
2009.0     0.148    176.2
2010.0     0.146    180.7
2011.0     0.143    185.3
2012.0     0.140    190.2
2013.0     0.135    195.3
2014.0     0.131    200.8
2015.0     0.128    206.6
2016.0     0.125    212.7
2017.0     0.123    219.1
2018.0     0.121    225.7
2019.0     0.121    232.3
2020.0     0.122    238.9
2021.0     0.125    245.2
2022.0     0.128    251.4
2023.0     0.132    257.1
2024.0     0.137    262.5
2025.0     0.143    267.4
2026.0     0.150    272.0
2027.0     0.157    276.1
2028.0     0.164    279.9
2029.0     0.171    283.4
2030.0     0.179    286.6
2031.0     0.187    289.5
2032.0     0.194    292.2
2033.0     0.202    294.7
2034.0     0.209    297.0
2035.0     0.216    299.1
2036.0     0.222    301.2
2037.0     0.229    303.1
2038.0     0.234    304.9
2039.0     0.240    306.6
2040.0     0.244    308.3
2041.0     0.248    309.9
2042.0     0.251    311.5
2043.0     0.252    313.0
2044.0     0.253    314.5
2045.0     0.252    316.1
2046.0     0.250    317.6
2047.0     0.245    319.2
2048.0     0.238    320.9
2049.0     0.228    322.6

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.