Quote:
Originally Posted by The_bluester
It will be interesting to see what the end result is, a great example of gravity in action. It is probably too much to hope for but it would be nice to see an animation sometime in the future of what the change in the asteroids orbit was.
The last animation of that type that actually sticks in my mind is the one of the voyager paths through the solar system.
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Here are some plots I made a couple of weeks ago when mentioning the pass at the ASV January meeting.
The Orbital Elements Change plots show how the Keplerian elements change from 1200 UT on 2013/02/15 to 0000 UT on 2013/02/16. I didn't include the orbital inclination in the plots as it didn't fit into either the group around 1.0 or the group in the 100s. Inclination changes from about 10 degrees to about 14 degrees from memory. But these changes in elements explain why most planetarium software has problems. You really need an integrator like Solex or similar.
By the way, the following link explains how to plot the position using Cartes du Ciel (Skycharts) by importing a file of positions calculated by JPL HORIZONS or the MPC Ephemeris Services as a catalogue of "objects".
http://www.ap-i.net/skychart/en/docu...isplay_of_neos
My other plot shows the effect on the trajectory by plotting the motion in two planes (X-Y is the instantaneous plane of Earth's orbit in this case, with X being a Sun vector and Y perpendicular). The JPL NEO site shows much nicer plots and I've seen a few YouTube videos that show the fly-by from the asteroid's perspective.
Now I need a weather expert to tell me where I should be heading for Friday night/Saturday morning.
Peter Thomas
Oakleigh
).
