Pluto System Small Moons: NH Post-Encounter Phase, 1 Aug 2015- TBD |
Pluto System Small Moons: NH Post-Encounter Phase, 1 Aug 2015- TBD |
Dec 17 2015, 07:04 PM
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#31
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
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Dec 19 2015, 09:24 PM
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#32
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Member Group: Members Posts: 122 Joined: 26-June 04 From: Austria Member No.: 89 |
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Dec 20 2015, 05:54 AM
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#33
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
This might make Nix the most densely cratered terrain that we've seen on any world farther out than Saturn? Potentially interesting for establishing cratering rates.
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Dec 20 2015, 09:18 AM
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#34
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
Since more than one satellite of Pluto is thought to be a merger of two bodies, or possibly more. So at some point there might also have been a lot of smaller pieces flying around, in view of that I find the cratering of Nix to be more or less what to expect.
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Dec 29 2015, 09:40 AM
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#35
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
On several of the latest images quoted "Kerberos" there is another body seen below it :
http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_1.jpg (bottom of picture) http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_1.jpg (middle right) Another Pluto satellite ? Just a bright star ? |
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Feb 3 2016, 04:26 AM
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#36
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Newbie Group: Members Posts: 2 Joined: 30-November 15 Member No.: 7849 |
On several of the latest images quoted "Kerberos" there is another body seen below it : http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_1.jpg (bottom of picture) http://pluto.jhuapl.edu/soc/Pluto-Encounte...0x636_sci_1.jpg (middle right) Another Pluto satellite ? Just a bright star ? I blew up the other body in the two images you mentioned and these are what came up. |
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May 13 2016, 06:45 PM
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#37
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
Hydra's icy surface
QUOTE The new data – known as infrared spectra – show the unmistakable signature of crystalline water ice: a broad absorption from 1.50 to 1.60 microns and a narrower water-ice spectral feature at 1.65 microns. The Hydra spectrum is similar to that of Pluto’s largest moon, Charon, which is also dominated by crystalline water ice. But Hydra’s water-ice absorption bands are even deeper than Charon’s, suggesting that ice grains on Hydra’s surface are larger or reflect more light at certain angles than the grains on Charon. http://www.nasa.gov/feature/pluto-s-icy-moon-hydra |
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Sep 11 2016, 11:41 PM
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#38
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Junior Member Group: Members Posts: 80 Joined: 18-October 15 From: Russia Member No.: 7822 |
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Sep 11 2016, 11:59 PM
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#39
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Fantastic, Roman!
-------------------- 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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Sep 12 2016, 02:12 AM
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#40
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
That is very impressive!
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Sep 12 2016, 02:18 AM
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#41
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
WOW!
I wonder what you achieve with a paperclip and gum! |
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Sep 13 2016, 09:07 PM
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#42
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is awesome, especially when one keeps in mind that it is generated from only two images (looking at it without knowing I would have guessed it was generated from a greater number of images).
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Dec 12 2016, 05:34 PM
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#43
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Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
-------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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Jan 24 2017, 09:33 PM
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#44
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
QUOTE During a previous epoch where Charon migrated away from Pluto, the minor satellites could have been trapped in orbital mean motion inclination resonances. An outward migrating Charon induces large variations in Nix and Styx's obliquities. The cause is a commensurability between the mean motion resonance frequency and the spin precession rate of the spinning body. As the minor satellites are near mean motion resonances, this mechanism could have lifted the obliquities of all four minor satellites. If so the high obliquities of Pluto and Charon's minor satellites imply that this system experienced orbital migration and all satellites were at one time captured into mean motion resonances. https://arxiv.org/abs/1701.05594 |
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