HST close approaches

ROB MATSON (ROBERT.D.MATSON@cpmx.saic.com)
21 Mar 1997 18:27:07 -0800

I used the latest element set for HST to see if it has any close approaches to
other satellites over the next few days:

HST
1 20580U 90037B   97080.05727574 +.00000377 +00000-0 +25237-4 0 09658
2 20580 028.4675 240.1986 0014574 358.9811 001.0726 14.86427821179933

I came up with some interesting "near-hits".  Times and dates are
Pacific Standard Time (UT - 8 hrs):

            Pacific
   Date    Local Time Norad       Name       Range (km)  EphAge
---------- ---------- ----- --------------   ----------  ------
 3/18/1997 17:13:43.0  3699 68091AN              1.2     +5.67
 3/22/1997  6:12:43.0 10493 77065ES              1.2     +9.60
 3/24/1997  4:41:59.2 15889 Cosmos 1666          2.9    +10.41
 3/23/1997 15:43:03.5 16111 Cosmos 1689 Rk       1.5     +9.44
 3/23/1997  4:24:49.6 24391 94029QU              0.6     +9.17
 3/23/1997 14:07:23.2 24568 94029XU              9.0    +10.30

The last two objects are part of the Pegasus debris storm.  If some one has
more recent element sets for any of these objects, it might be interesting to
see how much the minimum range changes.  I used the ALLSAT.DAT file for
3/15/97.  --Rob