* Astronomy

Members Login
Post Info TOPIC: Uranus rings


L

Posts: 130177
Date:
RE: Uranus rings
Permalink  
 


Title: Are there moonlets near Uranus' alpha and beta rings?.
Author: R. O. Chancia, M. M. Hedman

The Voyager 2 Radio Science Subsystem (RSS) occultations of Uranus' alpha and beta rings exhibit quasi-periodic optical depth variations with radial wavelengths that vary with longitude. These patterns may be wakes from small moonlets orbiting exterior to these rings. Based on the observed structures in the rings, we estimate that the moonlets would need to be located about 100 km exterior to the rings' semi-major axes and be 2-7 km in radius. Such moonlets could help keep the rings confined. Due to their small radii and presumed low albedo, the expected brightness of these moonlets is on the order of the noise in Voyager 2 images.

Read more (5344kb, PDF)



__________________


L

Posts: 130177
Date:
Permalink  
 

The Hubble space telescope photographed Uranus and its rings on the 14th August, 1995.

 NASA's Hubble Discovers New Rings and Moons Around Uranus

hs-2005-33-c-large_web.jpg


NASA's Hubble Space Telescope photographed a new pair of rings around Uranus and two new, small moons orbiting the planet.
Read more

Spoiler

Near-infrared view of Uranus by the European Southern Observatory



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard