RE: STS78 STRANGE OBSERVATION

Willie Koorts (wpk@saao.ac.za)
Sat, 29 Jun 1996 00:36:11 +0200 (GMT+0200)

On Fri, 28 Jun 1996 PMALEY@GP808.jsc.nasa.gov wrote:

> Willie just posted a sighting of what was most likely a water dump. The 
> description is the classic example of what a water dump looks like.

Thanks for clearing that up.  Thanks also to Walter Nissan for putting me 
on to that WWW url.  I now have enough ammunution to  fire off at any
potential caller.

> Since 
> there was not a time posted, I can say that today this particular supply 
> water ejection began around MET 8d 01h 06m and ended at 8d 02h 23m. If I did 
> not make a mistake in doing the conversion to UT, this corresponds to June 
> 28 at 17:55 UT and ended at 19:12 UT. Either way, I checked the ground track 
> map and it shows the orbiter passing over Namibia on an ascending track at 
> the time.
> 
> Paul Maley
> 
> pmaley@gp808.jsc.nasa.gov

Sorry for leaving out one of the most important parts of repoting 
anything.  Here is a copy of the predictions ala Greg Roberts: 
(elems slightly old)

 For station  Sutherland at West Longitude =  339.19 and latitude =  -32.378
    
 Schedule for 96036A  #23931 on  960628 Age=   3.84 days  96036A
     UTC     AZM     EL    RNG   HGT    R.A     DEC   PHA  DMAG
  16:39:40  290.6    0.2  1859   272V  31:17   17:11  110  70.6
  16:40: 0  290.3    1.4  1718   271V  31:21   16:11   92   8.2
  16:40:20  289.9    2.9  1576   271V  31:25   15: 3   91   4.5
  16:40:40  289.4    4.4  1435   271V  31:30   13:47   90   3.1
  16:41: 0  288.8    6.2  1294   271V  31:35   12:19   88   2.4
  16:41:20  288.1    8.2  1154   271V  31:40   10:36   87   2.0
  16:41:40  287.3   10.6  1015   271V  31:47    8:29   86   1.7
  16:42: 0  286.1   13.6   877   271V  31:54    5:50   84   1.5
  16:42:20  284.4   17.4   742   271V  32: 3    2:21   83   1.4
  16:42:40  282.0   22.6   610   271V  32:15   -2:29   82   1.2
  16:43: 0  277.9   30.0   486   270V  32:33   -9:39   80   1.1
  16:43:20  269.7   41.5   376   270V  33: 1  -20:59   79   1.1
  16:43:40  247.6   57.8   298   270V  33:58  -38:38   78   1.1
  16:44: 0  185.8   64.5   278   270V  36:17  -57:39   76   1.1
  16:44:20  145.3   48.9   329   270V  39:44  -59:19   75   1.1
  16:44:40  132.4   34.5   425   270V  41:30  -50:37   74   1.3
   
Hmmmm..  Our times does not exactly agree.  Is your information from NASA's
         official schedules?

Two more questions:  How are these MET timings reckoned?
                     
                     How long does such a dump normally take to sublimate 
                     and become invisable?

Thanks Guys 

                        (Is SeeSat-l great or what!!!!)
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