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Re: Fw: Asteroid 3753 (1986 TO)
A few questions please........
I am perplexed with the use of the term "repelling". I am unaware of
any repelling force which works over a long distance--Nothing on the
terms or scale of the gravity force. Magnetism is a short range force
and only works in the planetary scale with micron scale or smaller
particles over a short range where the math works. That is where the
weak magnetic force is able to overcome inertia. Also, do not confuse
the inertial pounding of a planetoid by solar winds as a repelling
force. The only long distance force (in the sense of physics) of which
I am aware of is Gravity. (Weak Force? Stephen Hawlkin where are you?)
Therefore: The definition of a shepherding moon used here is suspect or
needs amplification or clarification as to what the author means by
"repelling" force.
The article does not adequately describe relative motion, either. The
"lane changing" analogy is insufficient to describe the vector followed
by the car around the truck. We all think in terms of an elliptical
orbit of the moon around the earth. Relatively, YES-- absolutely thru
space, not at all. As the earth moves around the sun, the trace of the
orbit of the moon is a long spiral path which criss-crosses the
elliptical orbit of the earth around the moon.... did I say elliptical?
Viewed on the solar perspective the earth's orbit through absolute
space is also a criss-crossing spiral around the sun which is moving
through the galaxy which in turn..... I see by now you are getting the
picture. Actual movement thru an absolute (3 axis referenced) point in
space is a once in .... well it is once per eternity or "event horizon" happening!
With all the documentation, I still do not know where this asteroid is
"relatively speaking". Does it "orbit" the earth /moon centroid in a
tidal manner? Does it appear as an expanding and contracting,
non-orbital pattern to an earthbased observer? Does this object fly
around the earth/ moon or figure eight in between the moon and the
earth? Does the use of the term "spiraling orbit" signify an
earth-relative or earth-absolute path around the sun?
Regards,
Elton Jones
jjswaim wrote:
>
> -----Original Message-----
> From: Bernd Pauli HD <bernd.pauli@lehrer1.rz.uni-karlsruhe.de>
> To: Meteorite List <meteorite-list@meteoritecentral.com>
> Date: Wednesday, March 17, 1999 4:32 PM
> Subject: Asteroid 3753 (1986 TO)
>
> Hi Ron and list,
>
> According to this article , the asteroid's peculiar horseshoe orbit is based
> upon the very interactions it has with the Earth/Moon system and the Sun.
> I concluded that these interactions were based on gravitational influences
> at given positions of the four objects stated in the report,( and probably
> others)
> i.e., Earth, Moon, Asteroid 3753 and the Sun. I have a question below the
> article.
>
> |Astronomy, March 1998, p. 30:
> |
> |Solar System: Asteroid Shares Orbit with Earth
> |
> |How many natural companions does Earth have? If you thought there was
> |just one, the moon, then you're in for a surprise. Planetary scientists
> |have recently discovered a second - this one an asteroid. However, the
> |new companion doesn't orbit Earth on a nice elliptical path like the
> |moon but instead follows a complex, horseshoe-shaped path.
> |Asteroid 3753, also known as 1986 TO, is not a second moon of Earth but
> |instead plays the role of a "traveling companion." Its complicated
> |movement, which involves interactions with both the Earth-moon system
> |and the sun, was discovered by Paul Wiegert and Kimmo Innanen of York
> |University in Ontario, Canada, and Seppo Mikkola of Tuorla Observatory
> |in Piikkiö, Finland.
> |The asteroid is in a spiraling horseshoe orbit. To envision a simple
> |horseshoe orbit, think of a three-lane, circular race track. Earth is a
> |large truck traveling at constant speed in the middle lane and the
> |asteroid is a car moving a little slower in the outer lane. Just before
> |the truck is ready to pass, the car switches to the inner lane and
> |speeds up. It then starts to pull away from the truck but, being on a
> |circular track, the car eventually catches up from behind. just before
> |it passes the truck, however, it again switches to the outer lane and
> |slows down. Then the whole pattern repeats. In the case of 3753, the
> |asteroid's path spirals as it performs these maneuvers.
> |The asteroid won't stay in this relationship forever. Over the course of
> |thousands of years, gravitational interactions with Venus, Mars, and
> |Jupiter will eject it from its current orbit. "Having waltzed with Earth
> |for thousands of years," says Wiegert, "it may go looking for a new
> |dance partner."
> |
> Ron wrote:
>
> ">there's no connection to our moon with Asteroid 3753.
> The only shepherd moons are around Saturn, and they're shepherding
> Saturn's rings"
>
> |So if our moon has no connection, why did they include the Earth/Moon
> system as a whole as influencing the asteroid's orbit? Why not just the
> Earth? It
> must be the combination that affects it. Am I correct to deduce that the
> influence these objects have over the named asteroid is gravitational in
> nature given it's speeding up and slowing down as if being repelled and/or
> attracted? At what distance is the asteroid?
>
> Further, I used the term Shepherd as correlating the existence of this
> asteroid as being a possible reminent of planetary rings around the Earth.
> I used probably misstated it but so I looked up the definition of shepherd
> satellite : The gravitational influence of a moon in orbit near the edge of
> a planetary ring can have the effect of repelling the ring material. This
> "shepherding" effect has been found to confine a number of rings in the
> solar system, and the moons that do the shepherding are called shepherd
> satellites. " Do you see that this asteroid is suspiciously (possibly) a
> reminent of a ring around Earth? Correct me where I am wrong:-)
>
> Best,
> Julia
> |
> |Best regards,
> Julia
> |
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