Veja si pot trobar la velocitat inicial de l'asteroide que resulta en una forma quasi circular, orbita sense col·lisions.
Mars moon Phobos
Why does Phobos have parallel lines etched into its surface?
This simulation was suggested by Kenneth Ramsley at Brown University in 2011 regarding
his ideas about the Mars moon Phobos. You can see these lines in the photo above. Ken's
idea is that Phobos would occasionally capture a small asteroid which would orbit
Phobos but keep bumping into it, similar to what is seen in the above simulation.
See the Space.com article (May 2014)
How the Mars Moon Phobos Got Its Grooves
Although it looks like the large moon in the simulation is stationary, it is actually
moving. This is because the asteroid exerts a small gravitational pull on the large
moon. You can confirm that the large moon is moving in a couple of ways:
- Turn on the "pan-zoom" checkbox and click the "+" button to zoom in till you see
the center of the moon up very close.
- Set the graph to see the moon's position: choose "moon y position" and "moon x
position" for the variables to graph.
Also available are:
open source code,
documentation and a
simple-compiled version
which is more customizable.
This web page was first published January 2011.