On 4 Feb., 13:50, "Jonathan Thornburg [remove -animal to reply]"
wrote:
stargene wrote:
I just saw today's image of the strange tail of 'asteroid' P/2010 A2
on
the APOD website at
*http://antwrp.gsfc.nasa.gov/apod/astropix.html
If, as many suggest, its unique appearance is the result of a recent
collision between two asteroids (possibly of the Flora family, which
may have spawned the famous asteroid hit at Chicxulub), a good
question is: how recent is recent?

The asteroid is in the main belt, perihelion is 2 AU, it never comes
near the Earth.

See http://neo.jpl.nasa.gov/ca/ find an asteroid, click on link, there
is a search field, enter P/2010 A2

Regards

Carsten Nielsen
Denmark