Hyperion strikes back |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw imagesHyperion strikes back |
 Oct 17 2014, 10:55 PM
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 Member  Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336  |
An analysis of Cassini data from 2005 have shown that static electricity from Hyperion briefly did strike the space probe with static electricity when it passed the moon at a distance of 2000 km.
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Oct 19 2014, 09:24 PM
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 Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Hey - really good explanation of the situation.
 Thanks for taking the trouble to post that. I echo nprev's question Could its chaotic rotation state have something to do with this as well? Any thoughts? |
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Oct 20 2014, 07:11 AM
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#3
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 Member Group: Members Posts: 125 Joined: 18-July 05 Member No.: 438 |
QUOTE (ngunn @ Oct 19 2014, 09:24 PM)  I echo nprev's question Could its chaotic rotation state have something to do with this as well? Any thoughts? Given that the charging times are much, much shorter than the rotation/tumbling period, I doubt that the rotation state is likely to have a signficant effect, apart from making it difficult to predict what the potential is going to be across the surface at any one time. The irregular shape and rugged surface make it difficult to simulate too. oDoug - welcome back! Regarding other bodies... something is in the works; watch this space! |
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Oct 20 2014, 08:44 PM
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#4
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
QUOTE (ynyralmaen @ Oct 20 2014, 08:11 AM) Given that the charging times are much, much shorter than the rotation/tumbling period, I doubt that the rotation state is likely to have a signficant effect I meant the other way around. Uneven charging of the surface could give Hyperion a net electric dipole moment at any given time. This in turn could produce variable torques on the moon, contributing to its chaotic rotation. |
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TheAnt Hyperion strikes back Oct 17 2014, 10:55 PM
nprev So, I guess it's safe to nickname Hyperion ... Oct 18 2014, 12:41 AM brellis Was this event entirely random, or was Cassini fly... Oct 18 2014, 05:31 PM nprev Hyperion doesn't have an intrinsically generat... Oct 18 2014, 05:47 PM dvandorn A flux tube was my first thought, too. But the on... Oct 18 2014, 09:30 PM nprev You're probably right (and welcome back, BTW, ... Oct 18 2014, 10:36 PM
ynyralmaen All the inactive/airless bodies build up charge. S... Oct 19 2014, 08:17 PM
dvandorn QUOTE (nprev @ Oct 18 2014, 04:36 PM) ...... Oct 20 2014, 01:04 AM ynyralmaen QUOTE (ngunn @ Oct 20 2014, 08:44 PM) I m... Oct 21 2014, 05:21 PM TheAnt Thank you for the explanation ynyralmaen.
Spaceco... Oct 20 2014, 08:30 PM Bjorn Jonsson QUOTE (TheAnt @ Oct 20 2014, 08:30 PM) Sp... Oct 20 2014, 10:27 PM |
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