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Old 03.04.2014, 06:42 PM   #18408
SuchFriendsAreDangerous
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Quote:
Originally Posted by Robert Schunk
I don't know what you've been reading, but the "switched" position of Neptune relative to that of Uranus involves gravitational interaction with Jupiter..

No, not talking about Neptune's orbit, talking about how Neptune's gravity effects objects in the Kuiper Belt.. been reading the link I posted and a couple of other things I searched..

Quote:
The bulk of your post concerns solar systems with "Hot Jupiters", which are Jupiter-class planets that orbit their suns well within tiny Mercury's orbit around out own sun (such as Bellerophon and Dinky) and whose year lasts about four or so Earth days..

This is what I'm talking about..
Quote:
The hot objects must have a different history from the cold
objects — yet they’re orbiting in the same region of space.
What did all of this mean? A major clue came from
outside the solar system entirely. At the same time as the
Kuiper Belt was first being surveyed, astronomers had
also begun to discover planets around nearby stars. Many
of these exoplanets were so-called “hot Jupiters,” giant
worlds on insanely tight orbits around their stars. Given
what (little) we know about planet formation, these boil-
ing-hot gas planets couldn’t possibly have formed in their
present locations. But that meant that, against conven-
tional wisdom, these gigantic worlds must somehow have
formed very far from their stars, then migrated inward.
If exo-Jupiters can move inward, researchers reasoned,
then perhaps the giant planets in our own solar system
are not in their original locations. They saw that if Nep-
tune had migrated outward since it formed and intruded
into a primordial belt of cometlike objects, it would have
eaten a few of them and scattered the rest like billiard
balls, trapping some in orbital resonances and sending
others inward toward the Sun.

A few of the inward-moving objects stayed safely in the
outer solar system as Trojans. But the majority of these
travelers would have kept right on going. The resulting
cascade of comets into the inner solar system could have
contributed to the Late Heavy Bombardment, thought to
have pelted the inner planets and moons a few hundred
million years after the solar system formed (S&T: August
2011, page 20).
The present distribution of orbits in the Kuiper Belt
is thus a crime scene, preserving evidence for the havoc
wreaked when Neptune invaded its domain. Dynamicists
still don’t know exactly how Neptune perpetrated the
crime, though — it’s hard to write a history of Neptune’s
motion that can create the various “excited” populations in
the Kuiper Belt (the resonant, scattered, and hot classical
objects) while leaving the cold classical disk unscathed.
In the early 2000s, Mike Brown (Caltech), Chad
Trujillo (Gemini North Observatory), and David Rabino-
witz (Yale) began new CCD-assisted surveys specifically
designed to detect large trans-Neptunian objects, result-
ing in the discoveries of several of the largest now known.
The KBO discovery rate peaked in 2003, with nearly 200
discovered that year; in 2011, fewer than 20 were found.
The discovery rate has dropped not just because we’ve
found all the bright ones, but because the rarefied group
of astronomers working on this distant part of the solar
system has largely moved on from describing them as a
population to studying them as individuals.


Part of the evidence of gas giants forming further in the solar system is the reality that we currently find them further away in the solar system. But if they can move? The "hot Jupiters" are potential evidence of them moving inward, and some of the solar orbits of objects in the Kuiper Belt may be evidence Neptune's migration outward. If Neptune migrated outward, it can flip the zones around a bit. I'm not saying these giants formed near the stars, but some evidence possibly suggests nearer than previously thought, and also, if Neptune is moving outward clearly it formed closer than its current location.

Quote:
And, by the way, Kuyper Belt Objects do not orbit Neptune. They orbit the Sun. So guess who's still the gravitational boss of the Solar System?

Do you ever even read my posts or just trash talk them blindly??
I never said they orbited Neptune, I was talking about how Neptune's gravity has a measurable effect on their orbits around the Sun.


But thanks for being a total prick about it.. Its always nice to talk with you
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