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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:01:25

Orbital Elements for HDS585

WDS:	HDS585	WDS ID/Discoverer
P:	72.160	Orbital period (years)
a:	0.387	Semi-major axis (arcseconds)
i:	76.2	Inclination (degrees)
Ω:	259.9	Longitude of ascending node (degrees)
T:	2013.980	Epoch of periastron passage (year)
e:	0.457	Eccentricity
ω:	166.6	Longitude of periastron (degrees)
Start-Year:	1989.0	Year
End-Year:	2061.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS585

Position:	043111.44+015728.2	Epoch-2000 right ascension and declination
WDS-ID:	04312+0157	WDS designation
Discoverer Code:	HDS585	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	21092	Hipparcos catalog number
V1:	12.83	Magnitude of the primary
V2:	14.04	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS585

WDS 6th Orbit including measures of HDS585

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

Ephemeris of HDS585

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.091    191.2
-------------------------
1989.0     0.516    262.5
1990.0     0.504    263.2
1991.0     0.491    263.8
1992.0     0.476    264.5
1993.0     0.459    265.2
1994.0     0.441    266.0
1995.0     0.421    266.8
1996.0     0.400    267.8
1997.0     0.377    268.8
1998.0     0.352    270.0
1999.0     0.326    271.4
2000.0     0.297    273.0
2001.0     0.267    275.0
2002.0     0.236    277.5
2003.0     0.203    280.9
2004.0     0.169    285.5
2005.0     0.135    292.5
2006.0     0.102    304.0
2007.0     0.076    324.9
2008.0     0.066    358.4
2009.0     0.079     30.5
2010.0     0.106     49.7
2011.0     0.137     60.6
2012.0     0.165     67.6
2013.0     0.189     72.7
2014.0     0.205     76.7
2015.0     0.212     80.3
2016.0     0.211     83.9
2017.0     0.202     87.6
2018.0     0.186     91.8
2019.0     0.165     96.9
2020.0     0.143    103.6
2021.0     0.119    113.0
2022.0     0.099    126.5
2023.0     0.084    145.9
2024.0     0.082    169.5
2025.0     0.091    191.2
2026.0     0.110    207.1
2027.0     0.134    217.8
2028.0     0.161    225.2
2029.0     0.188    230.4
2030.0     0.215    234.4
2031.0     0.241    237.4
2032.0     0.267    239.9
2033.0     0.293    241.9
2034.0     0.317    243.6
2035.0     0.340    245.1
2036.0     0.363    246.4
2037.0     0.384    247.5
2038.0     0.404    248.5
2039.0     0.423    249.5
2040.0     0.440    250.3
2041.0     0.457    251.1
2042.0     0.472    251.8
2043.0     0.486    252.5
2044.0     0.499    253.2
2045.0     0.510    253.8
2046.0     0.521    254.4
2047.0     0.530    255.0
2048.0     0.537    255.5
2049.0     0.544    256.1
2050.0     0.549    256.6
2051.0     0.553    257.1
2052.0     0.556    257.7
2053.0     0.557    258.2
2054.0     0.557    258.7
2055.0     0.555    259.2
2056.0     0.553    259.7
2057.0     0.548    260.2
2058.0     0.543    260.8
2059.0     0.536    261.3
2060.0     0.527    261.9

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.