Cassini's Extended-Extended Mission, July 2010-June 2017 |
Cassini's Extended-Extended Mission, July 2010-June 2017 |
Feb 6 2009, 03:35 AM
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Senior Member Group: Moderator Posts: 3241 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Perhaps now would be a good time to start a new thread on the Extended-Extended Mission.
http://www.space.com/news/090127-cassini-m...-extension.html -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Feb 23 2009, 07:28 PM
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
As previously discussed there are no targeted Hyperion flybys. However, there are some pretty close nontargeted flybys:
HYPERION 2010-332T03:31:35 Nov28 Sun Inbound 71598.9 km flyby, v = 4.9 km/s, phase = 73 deg HYPERION 2011-237T17:50:51 Aug25 Thu Outbound 48781.7 km flyby, v = 5.2 km/s, phase = 106 deg HYPERION 2011-259T13:22:45 Sep16 Fri Outbound 57347.5 km flyby, v = 4.8 km/s, phase = 84 deg HYPERION 2012-068T01:21:42 Mar08 Thu Inbound 93452.2 km flyby, v = 5.5 km/s, phase = 148 deg HYPERION 2015-151T13:42:21 May31 Sun Outbound 35456.9 km flyby, v = 4.3 km/s, phase = 71 deg The last flyby in particular is at much closer range than any of the flybys so far with the exception of the targeted flyby. In addition there are several flybys of Mimas at significantly closer range than the closest flyby (~61,000 km) of the primary mission. There are also many nontargeted flybys of Tethys including two flybys closer than 10,000 km. The W/NW part of Odysseus isn't particularly well imaged, hopefully this 'gap' gets filled. There are many nice flybys of Rhea. There isn't very good stereo coverage near 0° longitude. Hopefully that relatively small 'gap' gets filled - I want a high resolution DEM of Rhea's *entire* surface . Lots of nontargeted Dione flybys as well and many flybys of the small 'rocks'. I'm a bit surprised there are no Voyager class (~100,000 km) Iapetus flybys since there was a ~120,000 km flyby early in the mssion and that one was by luck/accident and not planned. It happened when the first few months of Cassini's trajectory were altered in response to problems with the Cassini - Huygens communcations. This is going to be a very interesting extension to the mission provided everything goes well. |
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Feb 24 2009, 06:51 PM
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Member Group: Members Posts: 544 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
If you like little rocks, mark May 20, 2012 on your calender (Methone and Telesto). As previously discussed there are no targeted Hyperion flybys. However, there are some pretty close nontargeted flybys... These will be excellent for pictures. Unfortunately, the gravitational data that was missed in the close flyby will not be recovered by any of these. Not a criticism, though. Just a little regret.The last flyby in particular is at much closer range than any of the flybys so far with the exception of the targeted flyby. In addition there are several flybys of Mimas at significantly closer range than the closest flyby (~61,000 km) of the primary mission.. The closest flyby is during the current extended mission, and it will be a good one. Just inside 10,000 km on 13 Feb 2010. At that range, it will take about eight NAC frames or so to stretch across the disk of Mimas (figure about fifty to seventy frames for a mosaic). Herschel crater will be at high noon, so you might not get much shadow relief. But the "Kodak" quality should still be pretty good. I can't speak for everyone, but if they pull it off, I'll consider Mimas as done well enough.I'm a bit surprised there are no Voyager class (~100,000 km) Iapetus flybys... Boy, so am I. Biggest disappointment of the XXM. Can't have everything, though. A lot to look forward to. |
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