Few viewings of STS ahead

Thu, 7 Aug 97 09:39:38 PDT

Bad news for most of us.  According to the NASA Shuttle Sightings page
there won't be any US or European sightings of the shuttle, despite the
extremely high inclination (for a shuttle mission) of 76 degrees.  I've
never seen that page with so many "NO SIGHTINGS AVAILABLE" for each city.

It looks like the Southern hemisphere gets the good passes, but
go ahead and run predictions for your location anyway since NASA is
filtering out passes below 15 degrees, which seems too high for me.
It can be seen even around 5 degrees elevation in the right conditions.

Here are the criteria that NASA uses to determine visibility...

1) Apparent spacecraft elevation greater than 15 degrees
2) Local solar elevation less than -6 degrees
3) Spacecraft in sunlight
4) Apparent spacecraft solar elongation greater than 90 degrees.

Craig Cholar