webDotWiz talks Windows Live

A daily list of links to interesting sites

Apollo 12 re-enactment – some parameters for the trip home to Earth

From the transcript document at http://history.nasa.gov/ap12fj/18day8_cislunar.htm, these are some physics parameters you might like to consider (look at Ground Elapsed Time (GET) 183:30 hours):

Apollo 12 will cross over from the Moon’s sphere of influence to that of Earth at GET 186:30:43

Equal distance point halfway between Moon and Earth will occur at GET 219:47:40 – distance will be 110 904 nautical miles

Point of equal velocity between Earth and Moon, i.e. when the craft’s velocity relative to both Moon and Earth is the same, occurs at GET 207:14:14 – value at this time will be 3 919.5 ft/sec

The point halfway back between Trans Earth Injection (TEI) burn and Earth entry occurs at GET 208:23:41 when craft is 139 992 nautical miles from Earth.


Follow the Apollo 12 re-enactment at www.twitter.com/ApolloEcho and www.twitter.com/webdotwiz

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: