Opportunity knocks when you're already in the Spirit...

OK, cheesy subject line. But what I'm curious about--the date is fast
approaching when it is likely that we will have TWO functioning rovers
on Mars, but unlike for Viking, they'll be moving around -- which
leads to the problem of understanding where they are.

I've heard that there's already a somewhat standard coordinate system
for Mars (I mean an established Prime Meridian), but I haven't seen
any NASA press releases referring to the current LAT/LONG of Spirit.
Anybody know where it is?

Which brings me to another question-- who picked the Prime Meridian
for Mars and what is it based on? It better be good. (At least that
English dude picked his hometown, right?)



Tom Merkle