QUOTE (volcanopele @ Aug 29 2006, 09:52 PM)
Do you happen to know the phase angle of that encounter? Such an encounter would be best for shape determination. Even at 15,000 km, Methone would only be about 33 pixels across.
Not sure where to post this, so have plumped for this thread as it mentions shape-determination issues for Methone.
A few interesting images of this tiny moon have just been posted on the raw images pages, but they are more than just basic opnavs, as it appears that the moon's orbit has now been determined sufficiently-well to allow the frames to be fairly long exposure ones, tracking the moon in it's orbit, and consequently show a discernible disc.
Does anybody know the exposure times, distance from the moon (9th March was the date quoted, so distance must be in the region of 1.2million km), and Methone's diameter (I've seen figures varying from 1.6km to 4km quoted)
The frames are here
,and and here
Maybe the range is still too distant, but it appears on this evidence that Methone is at least roughly spherical.