View Full Version : Asteroid Sheila Sprouts a Tail and Coma

2010-Dec-12, 07:50 PM
When is an asteroid not an asteroid? When it turns out to be a comet, of course. Has this ever happened before? Why, yes it has. In fact it was just announced December 12, 2010 that the asteroid (596) Sheila has sprouted a tail and coma! This is likely a comet that has been masquerading [...]

More... (http://www.universetoday.com/81576/asteroid-sheila-sprouts-a-tail-and-coma/)

Ross 54
2010-Dec-16, 05:44 PM
596 Scheila is currently 3.1 AU from the Sun. That seems to be well outside the snow line. How is ice sublimating to create the tail and coma? Ross

2010-Dec-17, 02:31 AM
Which particular kind of ice are you talking about Ross?

Ross 54
2010-Dec-17, 02:51 AM
Water ice seems to be assumed. Ross