5919 obs : Re: UNID´s 2015 Apr 08 and 09 IDed

From: Björn Gimle via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 9 Apr 2015 20:33:05 +0200
I may finally have discovered why HeavenSat behaves erratically.
I noticed that with a smaller elset it seemingly produced a normal amount
of predictions.
When I use a full Spacetrack, and three or four classfd.tle, it simply
shows a very small fraction, no real correlation from time to time !?
So, first I checked "Use satellites filter" and selected perigee<3000
apogee<20000 and 70<inclination<125 for the ongoing IGS hunt.

I determined that of my Apr 04 tracks the only matches where #40539 and an
unclassified object.
15 604B is probably in a 60-70 degree inclination, or it might even be an
aircraft, though I don't see any flashes.
(It was hazy, so all tracks were smeared out, and could only expose 2s at
ISO 400)
The rest are close to the IGS 9/IGS 10 tracks (?)


40539 15 015B   5919 F 20150404191115000 18 25 1515757+295326 55 I
40539 15 015B   5919 F 20150404191122000 18 25 1527214+315606 55 M
70007 15 604A   5919 F 20150404191350000 18 25 1457555+270842 55 S
70007 15 604A   5919 F 20150404191352000 18 25 1500223+274492 55 S
70007 15 604A   5919 F 20150404191412000 18 25 1530866+333973 55 S
70007 15 604A   5919 F 20150404191450000 18 25 1644428+430497 55 S
71604 15 604B   5919 P 20150404191756000 18 25 1513270+435046 55 S
71604 15 604B   5919 P 20150404191810000 18 25 1515033+405663 55 S
71604 15 604B   5919 F 20150404191832000 18 25 1515719+364086 55 S
71604 15 604B   5919 F 20150404191912000 18 25 1515784+285592 55 S
71604 15 604B   5919 P 20150404191912000 18 25 1515914+283864 55 S
71604 15 604B   5919 P 20150404191914000 18 25 1517275+282803 55 S
71604 15 604E   5919 P 20150404192400000 18 25 1443503+311876 55 S
71604 15 604E   5919 P 20150404192402000 18 25 1446958+320722 55 S
72604 15 604C   5919 P 20150404192423000 18 25 1513722+242375 55 S
72604 15 604C   5919 P 20150404192423000 18 25 1513738+242348 55 S
72604 15 604C   5919 P 20150404192425000 18 25 1516509+244557 55 S
72604 15 604C   5919 P 20150404192425000 18 25 1516716+235528 55 S
73604 15 604D   5919 P 20150404192459500 18 25 1502754+352593 55 S
73604 15 604D   5919 P 20150404192501500 18 25 1506512+361031 55 S


2015-04-09 17:05 GMT+02:00 Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>:

> An other possibility??
>
> From my report of last night:
> 37954 11 075A   4172 G 20150408214607900 17 25 0308178+595076 37 S
> 37954 11 075A   4172 G 20150408214612918 17 25 0257286+591302 37 S
> 37954 11 075A   4172 G 20150408214621916 17 25 0239450+580072 37 S
> 99999 15 598A   4172 G 20150408215950712 17 25 0240019+492475 37 S
> 99999 15 598A   4172 G 20150408215952678 17 25 0237773+491560 37 S
> 40539 15 015B   4172 G 20150408220726742 17 25 0459279+331653 37 S
> 40539 15 015B   4172 G 20150408220736738 17 25 0444262+343229 37 S
> 40539 15 015B   4172 G 20150408220741765 17 25 0436904+350637 37 S
> 99998 15 598B   4172 G 20150408221836237 17 25 0506803+303710 37 S
> 99998 15 598B   4172 G 20150408221838316 17 25 0504009+305334 37 S
> 40538 15 015A   4172 G 20150408223621750 17 25 0532591+230486 37 S
> 40538 15 015A   4172 G 20150408223626770 17 25 0527584+234481 37 S
> 40538 15 015A   4172 G 20150408223636773 17 25 0517438+250050 37 S
> 40538 15 015A   4172 G 20150408223641791 17 25 0512435+253699 37 S
>
>
> IGS7A was imaged about 13 min ealier and no high residuals.
>
> The same for 40538 and 40539; both imaged at the predicted time with the
> TLE from classfd.tle and both no high residuals.
>
>
> So could the UNID´s be other pieces from the recent IGS launches?
>
>
-- 
----------------------------------------
Björn Gimle, COSPAR 5919
59.2617 N, 18.6169 E, 51 m
Phone: +46 (0)8 571 43 312
Mobile: +46 (0) 704 385 486
_______________________________________________
Seesat-l mailing list
http://mailman.satobs.org/mailman/listinfo/seesat-l
Received on Thu Apr 09 2015 - 13:33:53 UTC

This archive was generated by hypermail 2.3.0 : Thu Apr 09 2015 - 18:33:53 UTC