[AZ-Observing] Re: Typo on NASA image

I see now - if I look closely enough, now I can see the blue orbit line for
Earth extending off the chart. Thank you, Tom.

Scott

-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Tom Polakis
Sent: Saturday, January 15, 2005 10:11 AM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Typo on NASA image


At 09:35 AM 1/15/2005 -0700, Scott Saari wrote:
>Doesn't it appear that there is a typo on this image depicting how Earth
>looks from Cassini's current point of view?
>http://saturn.jpl.nasa.gov/operations/images/cassini_today3.jpg
>
>Isn't "Mercury" really Mars?


No, I think that's really Mercury.  I read somewhere that Earth was going
to transit the tiny 3' disk of the Sun as viewed from Saturn.  The field of
view of the figure is 5 degrees.  It's too early in the morning for me to
do basic trigonometry, but I bet that works out, knowing the diameter of
Mercury's orbit.

Tom



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