Hi Rex, Escape velocity depends on the mass of the planet, not it's orbital parameters.
Maybe I don't understand your question. Is this what you are asking? -Walter Not everything that can be counted, counts and not everything that counts can be counted. -A. Einstein. On Aug 5, 2011, at 12:04 PM, [email protected] wrote: > I don't post much. > I did not do the math. (my calculus has not been used much for many many > years. > > would not if you had a highly highly elliptical orbit not have to have the > full sun escape velocity as it could do the whip around gravitational boost > effect from the sun. > > also would a highly elliptical orbit have less of a escape velocity? > the second part could be wrong but the first one is always a possibility. (at > least in my mind) :) > > -Rex Scates > > scalecubes.com > > > > "But what about Mercury. Mercury's escape velocity is 4.3 km/s. But >> it's downstream from Earth and the Sun is a huge gravitational drain >> plug that devours material. If you think Earth gets a piece of Mars, >> imagine what the Sun gets from Mercury. To escape the Sun ... that is >> to go upstream towards Earth, at Mercury, any fragment would have to >> battle an escape velocity of 67.7 km/s. That's greater than Jupiter ! >> You might say ... ok, you don't have to actually escape the Sun, only >> make it from Mercury to Earth. Well, at Earth, the escape velocity is >> 42 km/s from the Sun. That's a loss of 25 km/s ... and don't forget >> the extra 4.3 km/s to get away from Mercury as well ..." >> > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
