possible wrong designations with Abrixas and Kosmos 3M rocket

Tristan Cools (tcools@nic.INbe.net)
Fri, 30 Apr 1999 23:55:26 +0200 (CEST)

At 09:10 30-04-99 -0400, you wrote:
>


>Last night (i.e. early 04/30/99 UTC) the essentially full Moon was, to
>say the least, annoying, but we were able to spot Abrixas and its rocket
>passing through Leo's tail.
>
>Date/Time UTC  Object                 Appar.Mag   Intrinsic Mag (quicksat)
>------------- ----------------------  ----------  ------------------------
>19990430/0117 25721=99-022A Abrixas     5.9         6.5
>19990430/0118 25723=99-022C Rocket     2.1-3.4     2.8-4.0  Varying with
>                                                        very approx 10s period
>
>(Magnitudes are +/- a few tenths and are based on nearby comparison stars)



There is something wrong with the elements below:

ABRIXAS                                          603 x 555 km
1 25721U 99022A   99120.24354304 -.00001707  00000-0 -12543-3 0    70
2 25721  48.4414 118.7312 0034696  17.9372 342.2761 14.96160302   203
Megsat-0                                         603 x 549 km
1 25722U 99022B   99120.24276415  .00008275  00000-0  72018-3 0    64
2 25722  48.4446 118.7211 0038782  16.6051 343.6121 14.97023270   205
ABRIXAS Kosmos-3M r                              604 x 558 km
1 25723U 99022C   99120.51134448 -.00000279  00000-0 -19502-5 0    63
2 25723  48.4421 117.4296 0032735  17.7814 342.4244 14.95547402   242



I tried to observe those three objects this evening.(30th)

I had a prediction at 20h32m40s close to psi Vir for 99-22B, 20h34m23s for
99-22A and 20h35m29s for 99-22C.

I did not see 99-22B(Megsat-O) but did see 99-22A and C at the predicted
position and time but the flashing object(+-10-20s), which was also seen by
Edward, was the first object I've seen(99-22A) which is Abrixas and the
steady object was the last object seen.  I would expect the other way
around, so I think the elements are just mixed up with each other.

The two objects were bright, mag +2 approximately.


Greetings,
Tristan Cools
tcools@nic.INbe.net
BWGS Member - Belgian Working Group Satellites

Observing at:

Damse Vaart: 3.2486E/51.2279N
Ryckevelde: 3.2867E/51.2054N
Brugge: 3.1611E/51.2108N