Re: Large sats for solar transit

Karl Cunningham (
Wed, 31 Jul 1996 13:18:56 -0700

Greetings --

Rob -- The list of satellites with the largest footprint is much appreciated.

>Thanks a million for the prediction - I SAW IT!!!!!!!!!!!!!!!!!!  and it 
>was GOOOOOOD :-))))))))
Congratulations. That's great.

In the past I've tried to see solar and lunar transits a few times using
Skymap for predictions and a C8 for the obs, but haven't succeeded yet.

One thing I've noted is that the time duration of the crossing is greater
when the elevation angle is lower (down to 1.5 sec or so for the closest
satellites crossing the entire disk), and the angle subtended by the
satellite is correspondingly smaller too.  Given these two competing
effects, would a low-elevation or a high-elevation transit be easier to see?

BTW, a friend of mine once saw a satellite transit the moon while observing
with a 22" telescope at high power.  He was able to see the outline of the
satellite, including a dish antenna and two solar panels.  When I first
heard the story from him, he wasn't sure when he saw it so there was no
chance of determining which bird it was.

-- Karl Cunningham
La Mesa, CA. 116.9775W 32.2705N +308M
interested in almost anything to do with science