[amsat-bb] use of PI in amsat development practice

[Samudra Haque]

Hi, Pi-Day is today (3/14/2010) also we just sprang forward by 1 hour.
(http://www.cnn.com/2010/TECH/03/12/pi.day.math/index.html?hpt=C2) and
apparently it's also Einsteins Birthday!
(http://en.wikipedia.org/wiki/Albert_Einstein)

Wow a lot of key dates here.

My question is: in amateur satellite design/planning how many
significant digits are used to calculate the value of pi? Is there a
significant difference in results between (4 decimal poinits) and (3
decimal points).

In professional space missions, such as NASA, what is the practice
with regards to use of Pi ? Are there any published standards?

Using Excel, is there any way to generate a large range of pi ?

-samudra N3RDX