Vesta departure and journey to Ceres, A new phase of Dawn adventure |
Vesta departure and journey to Ceres, A new phase of Dawn adventure |
Aug 26 2012, 05:45 AM
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
As suggested by "TheAnt", is time to start a new thread!
Due to lack of updates from "Mystic simulator", I asked directly to Marc Rayman for an update and he kindly sent me the following "unofficial" plots, showing evolution of distance, radial velocity and sub-spacecraft latitude (radius trend is splitted in two plots with different scales due to huge variation of the distance): I did not publish them immediately because I wanted to integrate them with my previous plots but, due to the lack of time in last week, I decided to post them directly with only minimal changes. As you can see, third engine stop occurred on Aug 8-18 at almost 2300km above Vesta while next (final) one is just started and, as reported by Marc in his latest journal, will be used to map North polar regions from 6000km distance. Thereafter thrust will resume and, based on plots, on Sept 5 total speed will overcome escape velocity (almost 45 m/s), so total energy balance will be zero; definitive exit from Vesta Hill sphere should occur after 20 days but consider that the times could slighty change due to orbit refinement and thrust plan changes. -------------------- I always think before posting! - Marco -
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Dec 6 2014, 11:55 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
I'd like to see Pallas and Hygeia! I want to see how the biggies transition down to the small ones we've seen. Also, while I'm wishing for things, I want much better imaging of Deimos. And heck let's go visit some Trojans too.
-------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Dec 7 2014, 05:23 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
I'd like to see Pallas and Hygeia! I want to see how the biggies transition down to the small ones we've seen. Also, while I'm wishing for things, I want much better imaging of Deimos. And heck let's go visit some Trojans too. Pallas has always seemed particularly interesting as a transitional world. -------------------- |
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Dec 13 2014, 04:33 PM
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Newbie Group: Members Posts: 9 Joined: 7-December 14 Member No.: 7360 |
Pallas has always seemed particularly interesting as a transitional world. The planetoid I want to see the most next is 24 Themis: http://en.wikipedia.org/wiki/24_Themis In a similar location to Ceres, 200 km in diameter, a surface with lots of water ice, and most importantly: Inclination 0.7595° So it orbits on exactly the same orbital plane as us. Very rare for an object of its type. |
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Dec 13 2014, 06:17 PM
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#5
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
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Dec 14 2014, 10:44 AM
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#6
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
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