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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:53

Orbital Elements for HDS2210

WDS:	HDS2210	WDS ID/Discoverer
P:	41.170	Orbital period (years)
a:	0.173	Semi-major axis (arcseconds)
i:	108.5	Inclination (degrees)
Ω:	353.4	Longitude of ascending node (degrees)
T:	2010.930	Epoch of periastron passage (year)
e:	0.069	Eccentricity
ω:	155.8	Longitude of periastron (degrees)
Start-Year:	2005.0	Year
End-Year:	2045.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2210

Position:	153926.44-135438.8	Epoch-2000 right ascension and declination
WDS-ID:	15394-1355	WDS designation
Discoverer Code:	HDS2210	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	139591	HD catalog number
Hipparcos number:	76676	Hipparcos catalog number
V1:	8.78	Magnitude of the primary
V2:	9.09	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS2210

WDS 6th Orbit including measures of HDS2210

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

Ephemeris of HDS2210

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.072     42.9
-------------------------
2005.0     0.056    241.2
2006.0     0.069    219.6
2007.0     0.087    205.7
2008.0     0.105    196.6
2009.0     0.122    190.2
2010.0     0.137    185.3
2011.0     0.149    181.3
2012.0     0.157    177.7
2013.0     0.161    174.5
2014.0     0.162    171.3
2015.0     0.158    168.1
2016.0     0.150    164.6
2017.0     0.139    160.6
2018.0     0.125    155.9
2019.0     0.109    149.8
2020.0     0.092    141.5
2021.0     0.075    129.5
2022.0     0.062    111.6
2023.0     0.056     87.3
2024.0     0.060     62.2
2025.0     0.072     42.9
2026.0     0.089     30.0
2027.0     0.106     21.2
2028.0     0.124     14.9
2029.0     0.140     10.1
2030.0     0.154      6.3
2031.0     0.165      3.0
2032.0     0.174      0.2
2033.0     0.181    357.5
2034.0     0.184    355.0
2035.0     0.183    352.6
2036.0     0.180    350.1
2037.0     0.173    347.4
2038.0     0.164    344.5
2039.0     0.151    341.2
2040.0     0.136    337.1
2041.0     0.118    332.0
2042.0     0.100    325.0
2043.0     0.081    314.8
2044.0     0.064    298.8

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.