Follow this link to skip to the main content

Dione Flyby (D-3) - Dec. 12, 2011

Dione Flyby (D-3) - Dec. 12, 2011

Dec. 12, 2011


[ - ]   Text   [ + ]
Dione by Saturn and the rings
 
  Saturn's moon Dione coasts along in its orbit appearing in front of its parent planet in this Cassini spacecraft view. Image taken July 18, 2011.
+ Image Details
+ More Dione Information
Dione 'D-3' Flyby: What Lies Beneath?

On Dec. 12 the Cassini spacecraft flew by Dione at about 61 miles (99 kilometers) to examine the moon's internal structure. The radio science measurement should add insight into how highly structured the center of the small moon is, which in turn should provide clues about its recent history and possible activity.

The design of this close encounter provided the ion and neutral mass spectrometer (INMS) a good sample opportunity, and before closest approach there was also time for the optical remote sensing (ORS) instruments to observe Enceladus in the near-distance. Then, with the composite infrared spectrometer (CIRS) in the lead, Cassini turned back to Dione to study the moon's icy surface fractures and search further for signs of activity.

On the outbound leg, the imaging science subsystem (ISS) lead for ORS instruments to map Dione with a mosaic. There was also an opportunity for a scan for the composite infrared spectrometer (CIRS) and a long observation for the visible and infrared mapping spectrometer (VIMS).




Related Link:

Portraits of Moons Captured by Cassini -- Dec. 12, 2011

 
 
 
Dione Flyby at a Glance
 
Dione Flyby
Dec. 12, 2011 (SCET)

Altitude
61 miles (99 kilometers)

Speed
19,500 mph (8.7 km/sec )

Details

+ Flyby FAQ

+ Dione Image Gallery

+ Browse or Search the Latest Raw Images

+ Saturn's Moons

 


Related Images





  • Blend space exploration with reading and writing -- Reading, Writing & Rings!
  • Cassini Scientist for a Day -- Students get involved
  • Cassini Raw Images