Re: Monster Iridium Prediction for San Antonio, Texas

Ed Cannon (
Wed, 08 Oct 1997 02:23:02 -0400

Update -- The mirror angle for Iridium 5 (97020D, 24795) for 
San Antonio, Texas [98.64W, 29.40N, 182m] on Thursday morning 
at 1:06:58 UTC is predicted to be ** 0.05 **!  The range is 
1331 km, which may be far enough to reduce it from monster to

Date    Time CDT  Angle  Phs Illum  AL  AZI  R.A.   Dec.  ElSun
9 Oct  6:06:58 AM  0.05   83  56%   31  360 05:05  88:18  -21.1

In spite of very uncertain weather, I'm seriously considering 
going there to try to see it.  I don't know how often the 
angle gets that good.  

There's also a low pass of NEAR Rk (96-008B, 23785) tomorrow 
morning which will be better from San Antonio than here.  Its 
predicted height above sea level is about 160 km (100 miles).  
Culmination for Austin is at about 6:44 CDT (11:44 UTC).  
This will be a near-zenith pass for the lower Rio Grande 
Valley of Texas and of course northern Mexico on the south
side of the border -- Mission, McAllen, Edinburg, Harlingen, 
and Brownsville, Texas; and Reynosa and Matamoros, Mexico.

Ed Cannon
Austin, Texas, USA -- 30.3086N, 97.7279W, 165m