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

From: Leo Barhorst via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 9 Apr 2015 17:05:52 +0200
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?


Regards,
Leo

2015-04-09 16:42 GMT+02:00 Leo Barhorst <leobarhorst_at_gmail.com>:
> Hello Jon and Cees,
>
> I´ve checked on the older IGS and r/b and on Jon´s estimated orbits.
>
> Satfit gives:
> 15-589A
> IGS 2  29393  155.450  104.228    0.515 15-598A  217.939
> IGS 5  36104  -15.378   -0.164    0.015 15-598A    1.019
> IGS 7A 37954  310.701    0.608    0.005 15-598A    1.009
> IGS 8A 39061 -226.598  110.256    0.482 15-598A  215.996
> DEMO   39062   22.928 -248.593    0.526 15-598A  235.935
> IGS 9  40381 no TLE in classfd
> IGS 10 40538 -215.915    3.838    0.004 15-598A    1.040
>
> Jon´s estimated orbits
> IGS 9rb71003 -160.317    3.961    0.005 15-598A   66.689
> IGS 9  71002  161.286    4.882    0.005 15-598A   66.689
> IGS10rb70008 -176.571    4.836    0.009 15-598A   13.854
> IGS 10 70007 -184.248    5.394    0.011 15-598A   13.839
>
>
> 15-589B
> 71003  123.272    0.103    0.019 15-598B   66.702
> 71002   85.555    1.057    0.015 15-598B   66.702
> 70008  107.296    0.641    0.033 15-598B   13.867
> 70007   99.817    1.872    0.005 15-598B   13.852
> 40539  -42.576    1.168    0.007 15-598B    1.000
> 40538   68.347   -0.037    0.017 15-598B    1.05
> 39062  -45.666 -247.917    0.736 15-598B  235.948
> 39061 -293.106  110.698    0.674 15-598B  216.009
> 36105  -21.706   22.997    0.037 15-598B    1.075
> 36104  -90.580   -4.978    0.048 15-598B    1.032
> 29393   87.368  104.882    0.719 15-598B  217.952
>
> So 15-589A could also be IGS 7A 37954 or IGS 5 36104
> and 15-589B fits well on IGS 10 r/b 70007 as well 40539
>
> Iḿ still no sure what sat I´ve imaged last night.
> It sure looks like IGS objects. They were both bright and S.
>
> Regards,
> Leo
>
>
> 2015-04-09 15:47 GMT+02:00 Jon . via Seesat-l <seesat-l_at_satobs.org>:
>> Hi all;
>>
>> <Hi Leo,
>>
>> Your identifications of IGS 10 and its rocket may in fact belong to
>> IGS 9, which (as Jon reminded us), targeted the same plane. Given that
>> the IGS 10 orbits are only a day old, I would find it odd that they
>> are off by 3.838 and 1.168 degrees in RAAN.
>>>
>>
>> Did not publish my estimations on Seesat.
>>
>> Here my estimations before launch of IGS-9 and IGS-10 (Opt-5):
>>
>> IGS-9 (Single Radar payload):
>>
>> IGS 9 payload                                            505 X 511 km
>> 1 71002U 15602A   15032.22709490 0.00030000  00000-0  00000+0 0    05
>> 2 71002  97.5051 104.2119 0004046 301.2708  29.2542 15.18152820    09
>>
>> IGS 9 rocket                                             426 X 518 km
>> 1 71003U 15603A   15032.22709490 0.00070000  00000-0  00000+0 0    01
>> 2 71003  97.4511 104.2022 0067098 145.2888 190.6828 15.29983957    09
>>
>> (Probably the UNIDs of Leo, can´t check it right now) (Great catch Leo!!).
>>
>>
>> IGS-10 (IGS Opt-5) and its rocket:
>>
>>
>> IGS 10 estimation                                        481 X 488 km
>> 1 70007U 15507A   15085.07778935 0.00000000  00000-0  00000+0 0    01
>> 2 70007  97.3059 156.2017 0005474 356.6819 239.9017 15.25854477    08
>>
>> IGS 10 rocket                                            460 X 554 km
>> 1 70008U 15508B   15085.06251157 0.00005000  00000-0  00000+0 0    09
>> 2 70008  97.3006 156.1277 0067938 323.0338 190.8224 15.18455430    08
>>
>> Current classfd.tle elets are:
>>
>> IGS Opt 5
>> 1 40538U 15015A   15097.87675917 0.00000000  00000-0  00000-0 0    07
>> 2 40538  97.5000 170.3136 0003000 139.2057 220.7941 15.17587539    00
>>
>> IGS Opt 5 r
>> 1 40539U 15015B   15097.92989755 0.00012000  00000-0  42687-3 0    05
>> 2 40539  97.2667 169.8982 0013496  45.8707 314.1291 15.28925613    00
>>
>> As you can see they were launched on same descending node (RAAN).
>>
>> Although there are on different altitudes the inclination is a little bit
>> different so both drift on RAAN to about 0.9881 deg/day.
>>
>> I am very very happy to be right on both estimations!
>>
>>
>> Jon.
>>
>>
>> --
>> Jon, COSPAR 6242, 42.9453, -2.82839, 623m, Bitoriano, Basque Country.
>> _______________________________________________
>> Seesat-l mailing list
>> http://mailman.satobs.org/mailman/listinfo/seesat-l

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Received on Thu Apr 09 2015 - 15:05:52 UTC

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