Rev 141: Titan, distant view after the storm |
Rev 141: Titan, distant view after the storm |
Dec 2 2010, 10:22 PM
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
“On December 5, ISS will image a half-phase Titan at a distance of 2.5 million kilometers (1.55 million miles). The camera will image the sub-Saturn hemisphere of the satellite, allowing researchers to continue to study the recent weather changes that have been occurring across Titan's equatorial region and that have brought methane rain to select regions of previously dry terrain”.
Seems a shame the NAC or WAC couldn’t take a few images before Dec 5th say on the second. Based on the SSS it would seem the area in S Senkyo (around 310 W and -20 ) that almost certainly had intense precipitation is better seen on the 2nd below left, and may be beyond the terminator and invisible on the 5th below on right. Also I couldn't confirm with the SSS that Titan would be as close as 2.5 Mkm on the 5th ??? |
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Nov 25 2011, 07:52 AM
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
The post storm Senkyo images of Dec 20 2010 are now available in the PDS archive. The PDS versions are used for the close-up views comparing the pre 3/21/2009 and post 12/20/2010 ISS images from just under 1M km. Additional darkened areas seem visible (small yellow arrows). The larger area noted last year (larger yellow arrow) is quite evident. The dark areas may represent places of methane rain accumulation. The ISS basemap shows the area in high resolution pre-storm; small dark albedo areas (yellow circle) exist which appear to localize with some of the darks spots post storm.
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