Noss and other observations

Tristan Cools (
Mon, 10 Jun 1996 21:36:42 +0200 (MET DST)

Can someone tell me the right designations(COSPAR/NORAD/USA number) of the
two Noss ojects we are observing.(and Titan upper stage)  Something has been
renamed by USSPACECOM.  Object A doesn't have any USSPACECOM number anymore
and the rocket body has been changed into the G object.  Things doesn't seem
clear right now.

However, I got two passage observations of the two NOSS objects(still call
them C and A) from last night, June 9.

Some positional measurements(epoch 2000)

                                RA      Dec             Time(UT)

96-29C                          51h31m  27=B051'          21h51m46s
                                18h40m  46=B008'          21h53m15s

96-29A                          15h33m  27=B012'          21h51m51s
                                18h50m  44=B044'          21h53m19s

Possible error: 10m' in direction, 1s in time.
Second object(A) had no convincing variations.  Both objects were mag +4

My second observation one orbit later showed a much fainter A-object, almost
invisible with 7X50 binoculars.  Estimated magnitude of C: mag +5; A: mag
max +7.5
Again C did not show any wild flash-behaviour.(maybe some slight variations)
During this passage I did three timings which showed they were were closing
in(due to fase effects ?)  4.12, 3.52 and 2.96s

96-29B(now G ??????) did show up low in the West.  First FfF later FaF then
F'F' which was easier to measure.  Flash period 4.01s

The nuclear Topaz reactor 87-60A/18187 was very difficult to measure.
Although bright, mag +2.5, it had a very small flash-amplitude, something
wich has been experienced before with 87-11A/17369.  Flash period 7.8s

When trying to observe 93-61A/22823/Spot 3 I found two objects which were
exactly in the same plane/orbit as I saw it.  Later on I determined that the
leading object was 91-50A/21574/ERS 1 followed by Spot 3.  They were only
seperated by approx. 2 degrees.


Tristan Cools
51.13N  3.16E