Rhea opposition surge animation - Unmanned Spaceflight.com

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Rhea opposition surge animation

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Bjorn Jonsson

Jan 28 2009, 10:45 PM

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On January 17, 2008 Cassini imaged Rhea from a range of ~500,000 km as the phase angle dropped to almost 0 degrees. This is an animation of 17 calibrated clear filter frames with the phase angle displayed at lower right:

As the animation shows Rhea gets significantly brighter when the phase angle drops to almost 0 degrees - this is a very pronounced effect. Note that the phase angle changes at a very uneven rate - the time between the images is variable.

The graph I posted in this thread is based on these same images.

Posts in this topic

Bjorn Jonsson Rhea opposition surge animation Jan 28 2009, 10:45 PM

ugordan That's pretty neat, Bjorn. Especially since Rh... Jan 29 2009, 01:45 PM

Bjorn Jonsson QUOTE (ugordan @ Jan 29 2009, 01:45 PM) T... Jan 30 2009, 12:20 AM

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