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File:Mimas shape.jpg

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Mimas_shape.jpg (296 × 274 像素,檔案大小:4 KB,MIME 類型:image/jpeg


摘要

描述
English: en:Saturn's moon Mimas, whose low density suggests that it is primarily composed of ice, has a flattened or en:oblate shape reminiscent of Saturn's (see PIA05389). The moon's en:equatorial dimension is nearly 10 percent larger than the polar one due to the satellite's rapid rotation. Mimas is 397 en:kilometres (247 en:miles) across.

This view shows principally the leading hemisphere on Mimas. Mimas' largest crater, Herschel (130 kilometers, or 80 miles wide), is centered roughly on the equator and can be seen here. North on Mimas is toward upper left.

The moon's oblateness is exaggerated by Cassini's viewing angle here -- the en:Sun-Mimas-spacecraft, or phase, angle was 5 degrees leaving a sliver of the moon's disk in shadow on the northwest limb.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on en:May 20, en:2005, at a distance of approximately 916,000 kilometers (569,000 miles) from Mimas. Resolution in the original image was 5 kilometers (3 miles) per en:pixel. The image has been contrast-enhanced and magnified by a factor of two to aid visibility.
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http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=1588

作者 NASA/JPL/Space Science Institute
本圖像或影音收錄於美國國家航空暨太空總署 (NASA)噴射推進實驗室(Jet Propulsion Laboratory),其照片編號為: PIA07534

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The original description page was here. All following user names refer to en.wikipedia.
  • 2005-07-05 08:05 Jyril 296×274×8 (3774 bytes)
  • 2005-01-21 22:14 The Singing Badger 500×500×8 (6445 bytes) Mimas, imaged by the Cassini orbiter, showing the moon's ovoidal shape. {{PD-USGov-NASA}}

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目前2007年12月28日 (五) 23:10於 2007年12月28日 (五) 23:10 版本的縮圖296 × 274(4 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|en:Saturn's moon Mimas, whose low density suggests that it is primarily composed of ice, has a flattened or en:oblate shape reminis

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