2 Pallas |
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2 Pallas |
 Oct 11 2009, 08:49 AM
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#1
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 Senior Member  Group: Members Posts: 1152 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004  |
no one seems to have noticed this
http://www.sciencemag.org/cgi/content/abstract/326/5950/275 -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Oct 11 2009, 08:57 AM
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#2
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 Senior Member Group: Moderator Posts: 6501 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Well, well, well! Guess it's extremely premature to start lobbying for an XM for Dawn, but hopefully some wheels are turning in that regard already.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Oct 11 2009, 10:55 AM
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#3
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Senior Member Group: Members Posts: 1152 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
I discussed about this with Mark Rayman a few weeks ago and he told me that
QUOTE There has never been an investigation into a flyby of Pallas
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Oct 12 2009, 05:03 AM
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#4
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Member Group: Members Posts: 404 Joined: 22-April 05 Member No.: 351 |
QUOTE (nprev @ Oct 11 2009, 09:57 AM)  Well, well, well! Guess it's extremely premature to start lobbying for an XM for Dawn, but hopefully some wheels are turning in that regard already. Ancient memory suggest that 2 Pallas orbits in an inclined orbit. If the memory chips are still functioning, this would make it hard... -------------------- |
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Oct 12 2009, 05:11 AM
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#5
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Senior Member Group: Moderator Posts: 6501 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I was thinking that it was maybe a few degrees off the ecliptic, but it's actually 35(!) freakin' degrees! Good trace memory, VJ.
Guess a flyby by Dawn might still be technically possible if Pallas is doing a plane crossing at the right time & place with respect to the spacecraft, but the whole thing sounds unlikely to the point of ain't-gonna-happen. Oh, well. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Oct 12 2009, 05:38 AM
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#6
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Senior Member Group: Members Posts: 1152 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
From Wikipedia
QUOTE Pallas has not been visited by spacecraft, but if the Dawn probe is successful in studying 4 Vesta and 1 Ceres, it is possible its mission may be extended to include a flyby of Pallas as Pallas crosses the ecliptic. However, due to the high orbital inclination of Pallas, it will not be possible for Dawn to enter orbit.
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Oct 12 2009, 02:54 PM
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#7
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 Interplanetary Dumpster Diver Group: Moderator Posts: 4061 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
There was a blurb about a Pallas encounter that briefly appeared on Astronomy Now's website back before DAWN launched, but it was pulled within a few hours of being posted.
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Oct 12 2009, 04:19 PM
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#8
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Member Group: Members Posts: 404 Joined: 22-April 05 Member No.: 351 |
QUOTE (tedstryk @ Oct 12 2009, 03:54 PM) There was a blurb about a Pallas encounter that briefly appeared on Astronomy Now's website back before DAWN launched, but it was pulled within a few hours of being posted. There has been talk from time to time about Dawn extended missions. The official blurb put out awhile ago is that any planning now is premature. The team will want to see how long they spend at Ceres, how much fuel is left, and what the efficiency of the engines will be at that distance from the sun. Very different than normal ballistic missions. -------------------- |
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Oct 12 2009, 07:34 PM
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#9
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 Member Group: Members Posts: 162 Joined: 15-August 07 From: Shrewsbury, Shropshire Member No.: 3233 |
I wonder if the Indians or Chinese have considered a flyby of 2 Pallas? Indian and Chinese missions to the Moon and Mars will never generate the public interest that would result from sending a spacecraft past a new Solar System body.
2 Pallas is one of the biggest objects in the Asteroid belt and so I am sure would have interesting and varied landscapes. For me the mission that really put the Japanese Space Agency on the map was Hayabusa because Itokawa was unlike any Solar System body visited before. |
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Oct 14 2009, 06:17 PM
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#10
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Senior Member Group: Members Posts: 1152 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
Note also this LPSC paper http://www.lpi.usra.edu/meetings/lpsc2009/pdf/2421.pdf
and its thanks to "STSCI and the Dawn mission for supporting this work." -------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Oct 15 2009, 07:01 AM
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#11
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 Administrator Group: Chairman Posts: 13268 Joined: 8-February 04 Member No.: 1 |
A series of barely funny but fairly inappropriate posts have been culled.
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Dec 21 2009, 06:43 AM
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Senior Member Group: Members Posts: 1152 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
On ArXiv today: Physical Properties of (2) Pallas
-------------------- I'm one of the most durable and fervent advocates of space exploration, but my take is that we could do it robotically at far less cost and far greater quantity and quality of results.
James Van Allen |
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Dec 21 2009, 06:55 AM
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#13
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Senior Member Group: Moderator Posts: 6501 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Huh. Almost the same average density as Mars.
Hate to say it, but it's probably dry as a bone....metal-rich, though. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Dec 22 2009, 06:05 PM
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#14
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 Bloggette par Excellence Group: Admin Posts: 3982 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Thanks very much for the pointer to that article, Paolo.
Of interest to some of the 3D modeling types here might be this website mentioned in the article, which has a database that currently includes 179 shape models for 112 asteroids. http://astro.troja.mff.cuni.cz/projects/asteroids3D/web.php --Emily -------------------- |
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