Search found 2 matches

by Zathris
Mon Apr 09, 2007 9:22 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Asteroid brightness variation? (APOD 05 Apr 2007)
Replies: 9
Views: 5480

Nonsense! Or more politely, that may not be the explanation. A continuous exposure that showed such discontinuity could have that explanation, but this is not a continuous exposure. It is described as a 'composite', many individual exposures, each elongated into a dash by the duration of that expos...
by Zathris
Fri Apr 06, 2007 8:19 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Asteroid brightness variation? (APOD 05 Apr 2007)
Replies: 9
Views: 5480

Chris Peterson is correct. The light curve dose show the rotation of 2006 VV2's 2.43 hour rotation period. That also tells us something of the nature of the object. Unlike meny asteroids 2006 VV2 is a solid mass not a rubble pile. Since the gravitational field of a mile wide object is less then the ...