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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:04:18

Orbital Elements for HDS620

WDS:	HDS620	WDS ID/Discoverer
P:	60.230	Orbital period (years)
a:	0.449	Semi-major axis (arcseconds)
i:	180.0	Inclination (degrees)
Ω:	66.7	Longitude of ascending node (degrees)
T:	2017.300	Epoch of periastron passage (year)
e:	0.31	Eccentricity
ω:	0.0	Longitude of periastron (degrees)
Start-Year:	1995.0	Year
End-Year:	2055.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS620

Position:	044913.27-312535.5	Epoch-2000 right ascension and declination
WDS-ID:	04492-3126	WDS designation
Discoverer Code:	HDS620	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	30774	HD catalog number
Hipparcos number:	22395	Hipparcos catalog number
V1:	8.05	Magnitude of the primary
V2:	11.62	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS620

WDS 6th Orbit including measures of HDS620

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

Ephemeris of HDS620

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.383    347.8
-------------------------
1995.0     0.561    220.0
1996.0     0.554    216.3
1997.0     0.546    212.5
1998.0     0.537    208.6
1999.0     0.527    204.6
2000.0     0.516    200.4
2001.0     0.505    196.0
2002.0     0.493    191.4
2003.0     0.480    186.5
2004.0     0.466    181.4
2005.0     0.452    176.0
2006.0     0.437    170.2
2007.0     0.422    164.0
2008.0     0.407    157.3
2009.0     0.392    150.1
2010.0     0.377    142.4
2011.0     0.362    134.0
2012.0     0.349    124.9
2013.0     0.337    115.2
2014.0     0.326    104.7
2015.0     0.318     93.7
2016.0     0.312     82.1
2017.0     0.310     70.3
2018.0     0.311     58.4
2019.0     0.314     46.6
2020.0     0.321     35.2
2021.0     0.330     24.4
2022.0     0.341     14.2
2023.0     0.354      4.8
2024.0     0.368    356.0
2025.0     0.383    347.8
2026.0     0.398    340.3
2027.0     0.413    333.4
2028.0     0.428    326.9
2029.0     0.443    320.9
2030.0     0.458    315.2
2031.0     0.472    309.9
2032.0     0.485    304.9
2033.0     0.498    300.2
2034.0     0.510    295.6
2035.0     0.521    291.3
2036.0     0.531    287.2
2037.0     0.541    283.2
2038.0     0.549    279.3
2039.0     0.557    275.6
2040.0     0.564    272.0
2041.0     0.570    268.4
2042.0     0.575    264.9
2043.0     0.580    261.5
2044.0     0.583    258.1
2045.0     0.586    254.7
2046.0     0.587    251.4
2047.0     0.588    248.1
2048.0     0.588    244.8
2049.0     0.587    241.4
2050.0     0.585    238.1
2051.0     0.583    234.8
2052.0     0.579    231.4
2053.0     0.574    227.9
2054.0     0.569    224.4

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.