Rev 149 - May 30-Jun 29, 2011 - Helene, Distant Iapetus, mutual events |
Rev 149 - May 30-Jun 29, 2011 - Helene, Distant Iapetus, mutual events |
May 30 2011, 08:02 PM
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#31
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Latest Looking ahead article (Rev149: May 30 - Jun 29) is up.
- Iapetus observations - Titan-Rhea mutual event - close (6,968 km) flyby of Helene - Titan flyby Interesting stuff. |
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Jun 27 2011, 01:24 AM
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#32
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
The distant view from January essentially shows the same side of Helene, albeit illuminated from the opposite angle:
http://photojournal.jpl.nasa.gov/catalog/PIA12758 Now, the caption states that this is the trailing hemisphere, which I *think* is a mistake; the 'Eyes on the Solar System' simulation and the mini-atlas suggest that this is actually the leading hemisphere. Here are two shots from the January and June flybys side-by-side: ...and here is a rough version of the two combined, showing the entirety of the leading hemisphere: -------------------- |
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Jun 27 2011, 06:14 PM
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#33
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
...and here is a rough version of the two combined, showing the entirety of the leading hemisphere: Great finding, I made another version with different hue illuminations (some distorsion in the polar regions of older image was necessary in order do better match features, probably due to slight difference in the Cassini "latitude"): What an incredible body! -------------------- I always think before posting! - Marco -
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