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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:51:10

Orbital Elements for HDS430

WDS:	HDS430	WDS ID/Discoverer
P:	48.300	Orbital period (years)
a:	0.2571	Semi-major axis (arcseconds)
i:	41.9	Inclination (degrees)
Ω:	56.2	Longitude of ascending node (degrees)
T:	2020.900	Epoch of periastron passage (year)
e:	0.158	Eccentricity
ω:	325.1	Longitude of periastron (degrees)
Start-Year:	2001.0	Year
End-Year:	2049.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS430

Position:	032621.05+352026.1	Epoch-2000 right ascension and declination
WDS-ID:	03264+3520	WDS designation
Discoverer Code:	HDS430	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	21183	HD catalog number
Hipparcos number:	16025	Hipparcos catalog number
V1:	8.80	Magnitude of the primary
V2:	10.58	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS430

WDS 6th Orbit including measures of HDS430

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

Ephemeris of HDS430

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.224     61.2
-------------------------
2001.0     0.291    227.7
2002.0     0.290    232.0
2003.0     0.288    236.3
2004.0     0.284    240.8
2005.0     0.278    245.3
2006.0     0.271    250.2
2007.0     0.261    255.3
2008.0     0.251    260.8
2009.0     0.239    266.8
2010.0     0.226    273.6
2011.0     0.213    281.1
2012.0     0.200    289.6
2013.0     0.189    299.2
2014.0     0.179    309.9
2015.0     0.173    321.7
2016.0     0.170    334.1
2017.0     0.171    346.6
2018.0     0.176    358.7
2019.0     0.183     10.0
2020.0     0.192     20.3
2021.0     0.201     29.7
2022.0     0.209     38.3
2023.0     0.216     46.3
2024.0     0.221     53.8
2025.0     0.224     61.2
2026.0     0.224     68.4
2027.0     0.223     75.6
2028.0     0.220     83.0
2029.0     0.216     90.6
2030.0     0.212     98.5
2031.0     0.208    106.7
2032.0     0.205    115.2
2033.0     0.203    124.0
2034.0     0.202    132.8
2035.0     0.204    141.6
2036.0     0.207    150.2
2037.0     0.212    158.5
2038.0     0.218    166.4
2039.0     0.226    173.7
2040.0     0.234    180.6
2041.0     0.243    186.9
2042.0     0.251    192.9
2043.0     0.260    198.4
2044.0     0.268    203.6
2045.0     0.275    208.5
2046.0     0.281    213.2
2047.0     0.285    217.7
2048.0     0.289    222.1

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.