Optical 25 April 2014

From: Greg Roberts via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 26 Apr 2014 16:38:15 +0200
Observations 25 APRIL 2014
------------------------------------

Cosatrak 1 (Computerised satellite Tracking System).

FLI ML8300M CCD camera with mechanical shutter + Trimble GPS

Used with NIKON ED AF NIKKOR 80-200mm f/2.8 telephoto lens
set at 85mm focal length. Field of view 12 X 9 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

FOR CLASSIFIED.TLE:
-------------------------------
21798 91 082A   0433 F 20140425170055223 55 15 0221222-371044 39  +078 05
21798 91 082A   0433 F 20140425170206436 55 15 0258245-231453 39  +070 05
21798 91 082A   0433 F 20140425170322675 55 15 0324367-082713 39  +075 05
21809 91 076E   0433 F 20140425182331406 55 15 2346310-733724 39  +060 05
21809 91 076E   0433 F 20140425182420773 55 15 2234422-794803 39  +050 05
21809 91 076E   0433 F 20140425182510215 55 15 1827052-822624 39  +055 05
28054 03 048A   0433 F 20140425172423487 55 15 0227396-363228 39  +078 05
28054 03 048A   0433 F 20140425172604666 55 15 0314325-190429 39  +081 05
28054 03 048A   0433 F 20140425172716961 55 15 0335553-064956 39  +080 05
36608 10 031A   0433 G 20140423172354214 55 15 1423598-454506 39  +045 05
36608 10 031A   0433 G 20140423172358214 55 15 1421438-470500 39  +045 05
36608 10 031A   0433 F 20140425180151798 55 15 0526492-675243 39  +085 05
36608 10 031A   0433 F 20140425180155798 55 15 0519030-662621 39  +080 05
39223 13 041B   0433 F 20140425173112484 55 15 0838383+195610 39  +120 05
39223 13 041B   0433 F 20140425173610642 55 15 0842354+200519 39  +120 05
39223 13 041B   0433 F 20140425174055785 55 15 0846131+201421 39  +120 05


UNKNOWNS FOR THIS SESSION:
------------------------------------------
Number 1:
---------
99990 99 990A   0433 F 20140425192521225 55 15 0915083+162402 39  +065 05
99990 99 990A   0433 F 20140425192621391 55 15 0923057+181115 39  +065 05
99990 99 990A   0433 F 20140425192641391 55 15 0925494+184925 39  +065 05
99990 99 990A   0433 F 20140425192651509 55 15 0927127+190705 39  +065 05
99990 99 990A   0433 F 20140425192711509 55 15 0930031+194514 39  +065 05
99990 99 990A   0433 F 20140425192721552 55 15 0931313+200455 39  +065 05
99990 99 990A   0433 F 20140425192741552 55 15 0934222+204306 39  +065 05
99990 99 990A   0433 F 20140425192751613 55 15 0935558+210333 39  +065 05
99990 99 990A   0433 F 20140425192811613 55 15 0938553+214351 39  +065 05
99990 99 990A   0433 F 20140425192821615 55 15 0940271+220425 39  +065 05
99990 99 990A   0433 F 20140425192841615 55 15 0943374+224442 39  +065 05
99990 99 990A   0433 F 20140425192851675 55 15 0945125+230517 39  +065 05
99990 99 990A   0433 F 20140425192911675 55 15 0948319+234858 39  +065 05

A bright slow moving steady object found whilst looking for object 99208
which was not seen. I dont think this is it.

Number 2
------------
99991 99 991A   0433 F 20140425165444913 55 15 0203231-383613 39  +035 05
99991 99 991A   0433 F 20140425165445913 55 15 0204163-380741 39  +035 05

Direction of travel unknown - start of exposure was 16h54m44.913s UT and
duration 1.00 second....no match found -- quite possibly a bird as track
angle a bit unusual.


Number 3
---------
A flashing fairly faint LEO sat passed just west of WGS 6r - can find no
match for it and direction not positively known but suspected. Since only
one end of trail visible decided not to bother with measuring it - too
much junk up there.

Strays seen:
----------------
14051 83 041B   0433 F 20140425191251120 55 15 0857441+205548 39  +060 05
16727 86 037A   0433 F 20140425171408591 55 15 1557300-830119 39  +070 05
23705 95 058B   0433 F 20140425172335300 55 15 0234360-374554 39  +055 05
25034 97 066B   0433 F 20140425191659962 55 15 0909473+173118 39  +045 05
25469 98 051C   0433 F 20140425180114063 55 15 0539445-691410 39  +060 05
25876 99 041E   0433 F 20140425172230283 55 15 0222200-400323 39  +055 05
27430 02 024A   0433 F 20140425184441747 55 15 0449490-532300 39  +050 05
28230 04 014A   0433 F 20140425180816677 55 15 0517245-660847 39  +035 05
32957 08 025E   0433 F 20140425171311063 55 15 1855299-743155 39  +055 05


NOTES:
---------
(1) Purpose of seesion was to try and get the two unknowns observed
    23 April using plane scans and check on MERCURY 2. Stopped by cloud
    but was ready to pack up anyway so no tears.

(2) Acquired the OFEQ object but very faint - suspect due to very poor
    phase angle - it was a "late" evening pass so only came out of
    shadow in the west. OFEQ objects are very bright when low in the east
    and rising as they move westward, but rapidly fade as the phase angle
    changes. Based on a study of the orbits of the last observations of
    the OFEQ objects in orbit the RA of node closely matches OFEQ 9 so 99%
    certain its OFEQ 9 so is reported as such.
    The trail for OPEQ 9 obtained 25 April was a bit difficult to
    measure as faint and not well defined - it addition it was imaged
    as it crossed the Greater Magellanic Cloud so LOTS of stars and
    nebulosity to make matters worse.

(3) I have still to examine the images obtained during the plane scan
    for the second object observed 23 April. This one aint so easy!

(4) MAGSAT B #25024 gave one bright flash which drew my attention to it
    otherwise it was pretty faint - almost invisible most of the time.

(5) A search for MERCURY 2 did not reveal it so suspect it has now
    moved westward out of my range of visibility - neighbours house in
    the way :-((

(6) DMSP F16 and DMSP B5D2-6 imaged very low in western sky so faintish.

Cheers
Greg

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Received on Sat Apr 26 2014 - 09:36:29 UTC

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