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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:26:32

Orbital Elements for HDS889

WDS:	HDS889	WDS ID/Discoverer
P:	34.070	Orbital period (years)
a:	0.105	Semi-major axis (arcseconds)
i:	135.4	Inclination (degrees)
Ω:	58.5	Longitude of ascending node (degrees)
T:	2001.610	Epoch of periastron passage (year)
e:	0.65	Eccentricity
ω:	71.8	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS889

Position:	063112.32-703057.9	Epoch-2000 right ascension and declination
WDS-ID:	06312-7031	WDS designation
Discoverer Code:	HDS889	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	47213	HD catalog number
Hipparcos number:	31071	Hipparcos catalog number
V1:	7.95	Magnitude of the primary
V2:	8.65	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2023	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS889

WDS 6th Orbit including measures of HDS889

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

Ephemeris of HDS889

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.111    145.8
-------------------------
2008.0     0.112    214.5
2009.0     0.118    209.8
2010.0     0.123    205.5
2011.0     0.127    201.4
2012.0     0.129    197.6
2013.0     0.131    193.9
2014.0     0.132    190.2
2015.0     0.132    186.6
2016.0     0.132    183.0
2017.0     0.131    179.4
2018.0     0.130    175.7
2019.0     0.128    171.9
2020.0     0.126    168.1
2021.0     0.124    164.0
2022.0     0.121    159.8
2023.0     0.118    155.4
2024.0     0.115    150.8
2025.0     0.111    145.8
2026.0     0.107    140.5
2027.0     0.103    134.7
2028.0     0.098    128.5
2029.0     0.093    121.6
2030.0     0.088    113.9
2031.0     0.082    105.2
2032.0     0.075     95.0
2033.0     0.067     82.5
2034.0     0.055     65.4
2035.0     0.038     35.9
2036.0     0.027    325.1
2037.0     0.045    267.9
2038.0     0.065    246.5
2039.0     0.082    234.8
2040.0     0.094    226.6
2041.0     0.104    220.2

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.