Ceres High Altitude Mapping Orbit (HAMO), Late summer through fall 2015 |
Ceres High Altitude Mapping Orbit (HAMO), Late summer through fall 2015 |
Aug 17 2015, 01:42 AM
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Member Group: Members Posts: 541 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
DAWN arrived in its new lower mapping orbit on August 13th. The DAWN team is preparing to resume science observation tomorrow on the 17th.
From the Current Mission Status page at the DAWN website: QUOTE August 13, 2015 - Dawn Arrives in Third Mapping Orbit
Dawn completed the maneuvering to reach its third mapping orbit and stopped ion-thrusting this afternoon. This was a little ahead of schedule because the spiral descent went so well that some of the allocated thrusting time was not needed. Since July 14, the spacecraft has reduced its orbital altitude from 2,700 miles (4,400 kilometers) to approximately 915 miles (1,470 kilometers). The orbit period has correspondingly decreased from 3.1 days to 19 hours. Dawn is scheduled to begin its new observations on the evening of Aug. 17 (PDT) and continue for more than two months. First, however, the mission control team will measure the actual orbit parameters accurately and transmit them to the spacecraft. |
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Sep 3 2015, 05:10 PM
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
Processed enlargement of HAMO 9.
(click to enlarge) I also had a lot of trouble finding this crater. I tried your suggested location Habakuz and it looks similar in SO11 but on the map, it doesn't seem to line up at all. Maybe I'm missing something. Edit: It was the same area you mentioned in SO11, Habakuz. A slightly better lit capture is in SO48, at the very right edge near the top. On the map, the area is somewhat blurry so it was difficult to tell what was going on. (click to enlarge) Survey orbit locations are simple approximations. -------------------- |
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Sep 3 2015, 06:23 PM
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Member Group: Members Posts: 423 Joined: 13-November 14 From: Norway Member No.: 7310 |
A slightly better lit capture is in SO48, at the very right edge near the top. On the map, the area is somewhat blurry so it was difficult to tell what was going on. That looks like it, yes. No obvious sign of any bright, smaller impact crater nearby from that angle, either; which is interesting (or have we already seen something similar elsewhere in the solar system?). -------------------- |
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Sep 4 2015, 01:38 AM
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Member Group: Members Posts: 684 Joined: 24-July 15 Member No.: 7619 |
(or have we already seen something similar elsewhere in the solar system?). Perhaps this is similar to the Java mud volcano Theories are that it was triggered when drilling breached the surface clay, which let out mud and gas beneath. http://www.berkeley.edu/news/media/release...6/09_lusi.shtml Interesting thing, the area may be sinking into a sort of caldera. Tons of pictues http://www.crisp.nus.edu.sg/coverages/mudflow/ |
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