Optical 16 Jan 2015 Part 1

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 17 Jan 2015 17:44:53 +0200
Observations 16 JAN 2015
------------------------------------

Cosatrak 1 (Computerised satellite Tracking System).

FLI ML8300M CCD camera with mechanical shutter + Trimble GPS

Used with 135mm focal length f/2.8 TAMRON lens.
Field of view 7.6 x 5.7 degrees.
Images processed and measured manually.

Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
Elevation 10 metres-situated in Pinelands (Cape Town),South Africa

UNKNOWN 1  -  Bright, steady
-------------------------------------------------
99999 99 999A   0433 F 20150116201348698 55 15 0153430+093405 19 S+065 05
99999 99 999A   0433 F 20150116201404898 55 15 0156304+063730 19 S+065 05
99999 99 999A   0433 F 20150116201413941 55 15 0157582+050522 19 S+065 05
99999 99 999A   0433 F 20150116201434134 55 15 0201323+005156 19 S+065 05
99999 99 999A   0433 F 20150116201444230 55 15 0203232-011840 19 S+060 05
99999 99 999A   0433 F 20150116201454312 55 15 0205117-033623 19 S+060 05

UNKNOWN 2 -  Variable  magnitude +7.5 to about +8.5
------------------------------------------------------------------------------
99999 99 999B   0433 F 20150116201736981 55 15 0143126-290422 19
99999 99 999B   0433 F 20150116201740981 55 15 0144207-280326 19
99999 99 999B   0433 F 20150116201742022 55 15 0146576-254900 19
99999 99 999B   0433 F 20150116201746022 55 15 0148089-244905 19

NOTES:
-------------
(1)  After a week of heavy cirrus cleared for a few hours so managed to
      observe a few satellites dodging clouds. Measuring almost complete
      but got myself messed up and wasted a lot of time and now mentally
      exhausted. I seem to have found two unknowns which do not appear in
      my current database.

(2)  The first one caused the problem as I was waiting for STPsat #37229.
      I initially mistook UNKNOWN 1 for STPsat but soon found that there
      was something wrong as the time residuals were not constant so
      obviously a satellite with an almost similar track angle but a
      different orbital period. Eventually sorted things out as I also
      had observed STPsat in several images and it was running close to
      the predicted time ( within a second or so ), so eventually
      identified what belonged where. I can find no match for this unknown
      so either I missed something, or its not in my database which was
      updated on the 15th January. A bright unknown at magnitude +06 is
      rather unusual.

(3)  The second one also has no match to anything.

(4)  I will report the remaining satellites tomorrow - I am too tired
      and confused now -- getting too old for this kind of stuff :-))))

(5) Other satellites seen are USA 186 ( running about 43 seconds late),
      STPsat ( about on time), Noss 3-5(B) and Noss 3-5(B), IGS 5r ( about
      1 min 50sec early), USA 179r ( about on time), USA 179 (late),
      Milstar 3,and USA 40r ( about 20 seconds off ), FIA Radar 3, another
      Noss pair seen by accident ( - still to identify and measure.)

     Also saw  another "Noss pair" by accident - turned out to
     YAOGAN 16A and   YAOGAN 16B.

Cheers
Greg
_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l
Received on Sat Jan 17 2015 - 09:46:05 UTC

This archive was generated by hypermail 2.3.0 : Sat Jan 17 2015 - 15:46:06 UTC