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Pluto's 4th moon
Juramike
post Jul 20 2011, 01:55 PM
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New moon discovered around Pluto using Hubble images!
http://www.nasa.gov/mission_pages/hubble/s...pluto-moon.html


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Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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jekbradbury
post Jul 20 2011, 10:59 PM
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I see two possibilities. Perhaps Pluto will continue to be the only object in the solar system with a number of discovered natural satellites between two and 13, a fact which might point to a particularly interesting orbital history that could be related to the presence of Charon. Alternatively, it will be joined in this distinction by some significant fraction of other TNOs as soon as a similar degree of attention is paid to them. Either way, there will be some explaining to do - and I don't know which of "Pluto is unique" and "the Kuiper belt is full of 3,4,5+-body-systems" would be easier to explain.
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djellison
post Jul 20 2011, 11:44 PM
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QUOTE (jekbradbury @ Jul 20 2011, 03:59 PM) *
I see two possibilities. Perhaps Pluto will continue to be the only object in the solar system with a number of discovered natural satellites between two and 13, a fact which might point to a particularly interesting orbital history that could be related to the presence of Charon.


No. There's at least one asteroid with three moons - a quadruple system.

http://www.oca.eu/workshop/Pise/slides/Pisa-Colas.pdf
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Posts in this topic
- Juramike   Pluto's 4th moon   Jul 20 2011, 01:55 PM
- - ugordan   Awesome, another target for NH   Jul 20 2011, 02:13 PM
|- - MahFL   I just saw that, cool. Who would have thought it w...   Jul 20 2011, 02:23 PM
- - kap   In the search for a possible ring around Pluto in ...   Jul 20 2011, 04:25 PM
- - Explorer1   It's gonna be tricky to plan a close-flyby of ...   Jul 20 2011, 04:31 PM
|- - kap   QUOTE (Explorer1 @ Jul 20 2011, 09:31 AM)...   Jul 20 2011, 04:32 PM
|- - ugordan   In all likelihood, if they already have a good orb...   Jul 20 2011, 04:36 PM
|- - Alan Stern   We'll likely get a fair imagery with LORRI, an...   Jul 20 2011, 04:42 PM
|- - ugordan   Back of the envelope calculation - let's say P...   Jul 20 2011, 04:48 PM
- - Seryddwr   Ah, Hubble - casting off veils of mankind's ig...   Jul 20 2011, 08:29 PM
- - jasedm   Really pleasing news! This no doubt presents a...   Jul 20 2011, 08:56 PM
- - ElkGroveDan   The "Kodak Moment" team here should prob...   Jul 20 2011, 09:14 PM
- - Explorer1   What would be the procedure if rings were discover...   Jul 20 2011, 09:29 PM
- - machi   Fantastic news! New Horizons flyby of Pluto mo...   Jul 20 2011, 09:46 PM
|- - Alan Stern   QUOTE (machi @ Jul 20 2011, 10:46 PM) Fan...   Jul 20 2011, 10:23 PM
- - jekbradbury   I see two possibilities. Perhaps Pluto will conti...   Jul 20 2011, 10:59 PM
|- - ElkGroveDan   QUOTE (jekbradbury @ Jul 20 2011, 03:59 P...   Jul 20 2011, 11:37 PM
|- - djellison   QUOTE (jekbradbury @ Jul 20 2011, 03:59 P...   Jul 20 2011, 11:44 PM
- - nprev   The NH encounter just keeps getting more & mor...   Jul 21 2011, 12:18 AM
- - Drkskywxlt   What's the general consensus (or is there any?...   Jul 21 2011, 12:20 PM
|- - tfisher   QUOTE (Drkskywxlt @ Jul 21 2011, 07:20 AM...   Jul 21 2011, 01:48 PM
|- - Drkskywxlt   QUOTE (tfisher @ Jul 21 2011, 08:48 AM) T...   Jul 21 2011, 04:24 PM
- - IM4   Pluto's P4 moon is now available at SSD Horizo...   Jul 23 2011, 08:21 AM
- - Explorer1   So that means P4 will appear just a little smaller...   Jul 23 2011, 05:27 PM
|- - ugordan   It would appear just a little smaller if NH were t...   Jul 23 2011, 05:34 PM
- - elakdawalla   Also, the orbit used to make that calculation may ...   Jul 24 2011, 02:36 AM
|- - IM4   QUOTE (elakdawalla @ Jul 24 2011, 02:36 A...   Jul 24 2011, 08:45 AM
- - tasp   LOL, when the accurate orbit becomes available, I ...   Jul 24 2011, 04:41 AM
- - CAP-Team   Am I right that the orbit of Pluto's fourth mo...   Jul 25 2011, 09:34 PM
|- - Alan Stern   More on P4 (and NH too) in this radio interview ai...   Aug 16 2011, 09:15 PM
- - ups   2015 is going to be a really exciting year with th...   Sep 6 2012, 09:34 PM

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