Mission To Sedna, space mission to sedna |
Mission To Sedna, space mission to sedna |
 Jan 13 2008, 12:51 PM
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 Junior Member  Group: Members Posts: 24 Joined: 27-September 07 From: Tampere, Finland Member No.: 3919  |
I have tried to search but could not see any serious planning of sending a fly-by mission to Sedna. Does anyone have any info if the scientific community is planning such...?
In my opinion, Sedna would be very interesting target, far more interesting than any KBO etc. The fact that it spends most of the time outside heliopause under the influence of cosmic rays during aphelion could reveal some interesting results and also the reddish colour it has might be worth investigating. And good for us, at the moment it is approaching its closest point to Sun on its orbit, so mission to Sedna would not be such a big effort if done e.g. a'la NH with Jupiter gravity assist...? Maybe possible NH2 could be sent that direction.......? Any comments, any info? Especially the fact that it is a body from outside the heliopause, could that add some interest towards it? -------------------- Spamming the Solar System with greetings since 1997!
(New Horizons, Huygens, Opportunity/Spirit, Deep Impact, Dawn, Phoenix, Selene... to name a few) :) |
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Jan 13 2008, 08:33 PM
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Senior Member Group: Members Posts: 1101 Joined: 14-October 05 From: Seattle Member No.: 530 |
Jupiter-Sun gravity assist can get you going even faster. Of course the flyby will then be extremely brief.
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Jan 13 2008, 08:46 PM
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 Senior Member Group: Members Posts: 3534 Joined: 1-October 05 From: Croatia Member No.: 523 |
How can you use Sun in a gravity assist? That's like using Earth in a gravity assist to get to the Moon. Unless you're thinking of a solar sail or ion engine providing delta-V during the Sun "flyby" in which case it makes a bit sense.
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Jan 14 2008, 02:34 AM
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Senior Member Group: Members Posts: 1101 Joined: 14-October 05 From: Seattle Member No.: 530 |
QUOTE (ugordan @ Jan 13 2008, 03:46 PM)  How can you use Sun in a gravity assist? That's like using Earth in a gravity assist to get to the Moon. Unless you're thinking of a solar sail or ion engine providing delta-V during the Sun "flyby" in which case it makes a bit sense. Can't say I really know all the details-- Any gravity assist needs some sort of delta-V in the well, right? I think the Jupiter-Sun dual gravity assist was suggested for some interstellar probe. And I think it jettisoned a sun-shield when passing the sun, so there was delta-mass as well. |
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Jan 14 2008, 06:34 AM
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Junior Member Group: Members Posts: 22 Joined: 2-March 06 Member No.: 691 |
QUOTE (stevesliva @ Jan 14 2008, 03:34 AM) Can't say I really know all the details-- Any gravity assist needs some sort of delta-V in the well, right? I think the Jupiter-Sun dual gravity assist was suggested for some interstellar probe. And I think it jettisoned a sun-shield when passing the sun, so there was delta-mass as well. when will a "Grand Tour" set be available next? that would add alot of Dv, like the Voyagers. |
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Jan 14 2008, 05:55 PM
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Senior Member Group: Members Posts: 1008 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
QUOTE (cawest @ Jan 13 2008, 10:34 PM) when will a "Grand Tour" set be available next? The 4-planet one (JSUN) is every 176 years, so the next one should be about 2153. --Greg |
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K-P Mission To Sedna Jan 13 2008, 12:51 PM
J.J. Unfortunately, I don't see this happening any ... Jan 13 2008, 02:57 PM
K-P I don't think that the roughly 80-90 AU distan... Jan 13 2008, 07:08 PM Greg Hullender Jupiter can speed you up or get you off the eclipt... Jan 13 2008, 08:01 PM ugordan Does anyone know how much heliocentric escape velo... Jan 14 2008, 09:53 PM ugordan QUOTE (stevesliva @ Jan 14 2008, 03:34 AM... Jan 14 2008, 09:18 AM Greg Hullender QUOTE (ugordan @ Jan 13 2008, 12:46 PM) H... Jan 14 2008, 05:51 PM ngunn We had a 'what missions would you like to see... Jan 13 2008, 09:09 PM cawest i would not expect to see a mission to Sedna till ... Jan 14 2008, 02:15 AM stevesliva There are some more details (and numbers for Ulyss... Jan 14 2008, 10:14 PM ugordan QUOTE (stevesliva @ Jan 14 2008, 11:14 PM... Jan 14 2008, 10:28 PM JRehling At least solar radiation would not be in short sup... Jan 14 2008, 10:45 PM ugordan True, but one has to think about how hot the semic... Jan 14 2008, 11:01 PM |
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