potential visibility utility

Walter Nissen (dk058@cleveland.freenet.edu)
Mon, 20 Jul 1998 11:14:45 -0400 (EDT)

If elsets from OIG are going to be at a premium, has anyone thought of 
writing a utility which would go thru a file of elsets and divide it, or 
at least the catalog numbers, into 2 sets: 
 
a) those whose orbits will be illuminated in the dark above a given site 
during a given period, i.e., those which are potentially observable if the 
drag produces a suitable mean anomaly            --and-- 
 
b) those which definitely won't be visible. 
 
With a utility like this, people wouldn't have to waste requests for 
elsets of objects they won't see anyway. 
 
'Course, this wouldn't be absolutely perfect.  E.g., you'd still have to 
include such as shuttles and decayers which might be self-luminous. 
 
Cheers. 
 
Walter Nissen                   dk058@cleveland.freenet.edu
-81.8637, 41.3735, 256m elevation

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Carpe noctem!