The two main ideas behind Scheila’s cometary outburst are that it is either a rare comet with an orbit inside the asteroid belt that started out gassing or that it has recently suffered a collision like the one in 2009 that befell an asteroid known as P/2010 A2.
Stay tuned.
Thanks to Mike & Ken for being kind enough to share this raw image of the event so soon after it was acquired!
For a related post see also, The Asteroid that Became a Comet and the Comet that Became an Asteroid.
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