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Old 19-December-2002, 05:10 PM
Quasi Quasi is offline
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During a short break at school I walked outside, looked up at our moon and started thinking, would it be possible for our moon, or any moon for that matter, to have (natural) satallites of their own? Course that might look a little strange but is it possible?

Also, on a bit of a side note, I would think that our moon would have at least one (artificial) satallite that we could use to probe the Moon's surface easier. Why is this? Are the satallites in Earth orbit more than sufficient for this task? Thanks.

<font size=-1>[ This Message was edited by: Quasi on 2002-12-19 12:11 ]</font>

<font size=-1>[ This Message was edited by: Quasi on 2002-12-19 12:12 ]</font>
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Old 19-December-2002, 05:12 PM
irony irony is offline
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I think there actually is a satellite or satellites in orbit of the Moon, to map it. I can't remember the names off the top of my head, but I'm pretty sure they're there.
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Old 19-December-2002, 05:55 PM
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GrapesOfWrath GrapesOfWrath is offline
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Quote:
On 2002-12-19 12:10, Quasi wrote:
During a short break at school I walked outside, looked up at our moon and started thinking, would it be possible for our moon, or any moon for that matter, to have (natural) satallites of their own? Course that might look a little strange but is it possible?
By a weird synchronicity, I brought that up just this morning in another thread, which asks for things that we should be able to see, but don't.
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Old 19-December-2002, 06:49 PM
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SKY SKY is offline
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If you want to get technical, the planets are satellites of the sun, therefore the moons of our solar system are satellites of satellites. [img]/phpBB/images/smiles/icon_smile.gif[/img]
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Old 19-December-2002, 06:54 PM
traztx traztx is offline
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Quote:
On 2002-12-19 12:12, irony wrote:
I think there actually is a satellite or satellites in orbit of the Moon, to map it. I can't remember the names off the top of my head, but I'm pretty sure they're there.
Lunar Prospector was crashed into the moon at the end of it's mission.

Clementine left lunar orbit.
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Old 19-December-2002, 07:00 PM
RickNZ RickNZ is offline
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If someone without a doubt say yes then i would jump up and finaly be able to say "say, up yours pluto i always knew you wernt a planet u deceitful little body!"
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Old 19-December-2002, 07:04 PM
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GrapesOfWrath GrapesOfWrath is offline
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On 2002-12-19 14:00, RickNZ wrote:
If someone without a doubt say yes then i would jump up and finaly be able to say "say, up yours pluto i always knew you wernt a planet u deceitful little body!"
Say yes to what?
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Old 19-December-2002, 08:34 PM
daver daver is offline
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Quote:
On 2002-12-19 12:10, Quasi wrote:
During a short break at school I walked outside, looked up at our moon and started thinking, would it be possible for our moon, or any moon for that matter, to have (natural) satallites of their own? Course that might look a little strange but is it possible?

Also, on a bit of a side note, I would think that our moon would have at least one (artificial) satallite that we could use to probe the Moon's surface easier. Why is this? Are the satallites in Earth orbit more than sufficient for this task? Thanks.

<font size=-1>[ This Message was edited by: Quasi on 2002-12-19 12:11 ]</font>

<font size=-1>[ This Message was edited by: Quasi on 2002-12-19 12:12 ]</font>
I've read that the mass distribution on the moon is a bit wierd; any satellite in a low lunar orbit is in a relatively short going to be perturbed enough to crash into the moon. Higher orbits aren't stable either, but that's due more to the earth's influence.
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Old 20-December-2002, 02:01 AM
RickNZ RickNZ is offline
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Quote:
On 2002-12-19 14:04, GrapesOfWrath wrote:
Quote:
On 2002-12-19 14:00, RickNZ wrote:
If someone without a doubt say yes then i would jump up and finaly be able to say "say, up yours pluto i always knew you wernt a planet u deceitful little body!"
Say yes to what?
Can moons have moons. Bout the only thing to me that makes pluto a planet is chiron. Hence if moons can have moons pluto = non-planet.(asteroid? binary moon system?)

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Old 20-December-2002, 02:09 AM
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GrapesOfWrath GrapesOfWrath is offline
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On 2002-12-19 21:01, RickNZ wrote:
Bout the only thing to me that makes pluto a planet is chiron.
What is your criteria for planethood?
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Old 20-December-2002, 03:22 AM
John Kierein John Kierein is offline
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Don't some of the "shepherding" moon's in saturn's rings sorta orbit each other? Anybody know?
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Old 20-December-2002, 05:39 AM
Gsquare Gsquare is offline
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I can't believe you guys are bringing this up. I just wrote an article a week ago touching on this very topic... and John K. you are putting your finger right on it.

I was debating whether to run it by you guys first... So, have at it; I've reproduced it here: http://www.badastronomy.com/phpBB/vi...=3275&forum=2&

G^2

<font size=-1>[ This Message was edited by: Gsquare on 2002-12-20 00:41 ]</font>
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