土星 ALPO-Japan Latest
Saturn Image 2010/12/21(UT)
Donald C Parker
Don
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Donald C Parker(16-in (41cm) Newtonian) |
The storm appears to be drifting westward and also expanding in an east-west direction. Rough measurements reveal that the bright center is now located at L3=283 (B=+44.5), whereas on 17 December it was at L3=271 (B=+41.7). The E-W extent now runs from 214-291 degrees L3. On 17 December it extended from 230-279 degrees L3.
The storm is not detected in the methane band and seems to brighten as the wavelengths shorten.
[ Donald C Parker Coral Gables,Florida U.S.A]
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