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Interstellar Interlopers, Coming in from the great beyond
JRehling
post Apr 28 2020, 01:42 PM
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QUOTE (tanjent @ Apr 26 2020, 08:12 PM) *
I can't find the reference via Google so I am short on details, but I recall several years ago there was a proposal for a retrograde head-on flyby of multiple asteroids in the main belt. It could not have gotten very far, but maybe a trajectory of that sort could be adapted to closely inspect this object at aphelion. I guess the power requirements would be in Juno's class though, so it would not be cheap.


As far as I know, this proposal was mine and hasn't had any life beyond that (which is to say, just some energetic posting on a fanboy basis).

The MANTIS Discovery mission proposal would have flown by nine asteroids via a prograde solar orbit. A retrograde orbit might require a Jupiter gravity assist and more.
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stevesliva
post Apr 29 2020, 06:45 PM
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QUOTE (nprev @ Apr 26 2020, 01:47 AM) *
I was surprised to see this considering it's now a couple of years old. Looks like a small object in a retrograde 1:1 orbital resonance with Jupiter may be of extrasolar origin, and the same may be true of some Centaurs.


Phil Plait covers this in passing and some of the ensuing topics here:
https://www.syfy.com/syfywire/has-the-sun-c...her-star-wellll

The trigger is the same sort of work for the high-eccentricity Centaurs.
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