Author Topic: Ofeq 10 - Shavit-2 - April 9, 2014  (Read 14725 times)

Offline Galactic Penguin SST

Ofeq 10 - Shavit-2 - April 9, 2014
« on: 04/09/2014 08:54 pm »
Apparently launched into orbit at 18:59 UTC according to a Russian watching at Palmachim. The satellite is reported to be a SAR sat similar to TecSAR.
« Last Edit: 04/09/2014 09:00 pm by Galactic Penguin SST »
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Galactic Penguin SST

Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #1 on: 04/09/2014 09:09 pm »
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Star One

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Offline Comet

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #3 on: 04/09/2014 09:55 pm »
-

Offline albatros68

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #4 on: 04/09/2014 11:10 pm »
Since it has high imaging capability, how can it be defined in terms of image resolution?

Offline Phillip Clark

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #5 on: 04/10/2014 02:46 am »
Since the Space-Track orbital data for all Ofeq satellites became classified in early 2011 I am assuming that we will see no data for this satellite.
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Offline jcm

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #6 on: 04/10/2014 04:25 am »
I tried to mock up some possible TLEs for the satellite based on launch to a 300 x 600 km transfer orbit and circularization
at first apogee.

3rd stage:
1 39650U 14019A   14099.80347200 0.00000000 +00000-0 +00000-0 0    19
2 39650 141.8200 211.0300 0219242  51.6600   0.0000 15.38788078     4 
 
Payload:
1 39650U 14019A   14099.83611111 0.00000000 +00000-0 +00000-0 0    17
2 39650 141.8200 211.2300 0000000 307.4000 285.3000 14.89198295     9

These are very rough... would be great if observers could actually go look for these.
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Offline Star One

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #7 on: 04/10/2014 07:57 am »
Should we assume there is any accuracy in the images produced for this satellite?

Offline Galactic Penguin SST

Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #8 on: 04/10/2014 08:04 am »
The launch as seen from a nearby beach:

Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Comet

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #9 on: 04/10/2014 02:10 pm »

Offline Galactic Penguin SST

Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #10 on: 04/10/2014 02:11 pm »
From the Israeli MoD:



Accurate launch time 19:06:02 UTC.  ;)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Comet

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #11 on: 04/10/2014 02:12 pm »

Offline jcm

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #12 on: 04/10/2014 02:23 pm »
From the Israeli MoD:
 
Accurate launch time 19:06:02 UTC.  ;)

Except that later in the video it seems to show another camera with 19:06:40...  so I am a bit confused.
In any case it looks like my TLEs above are 9 minutes off.
« Last Edit: 04/10/2014 02:25 pm by jcm »
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Offline Helodriver

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #13 on: 04/10/2014 02:26 pm »
That bright flash and apparent expulsion of unburned propellant about 11 seconds after launch was interesting. I wonder if any performance was lost because of that?

Offline IanO

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #14 on: 04/10/2014 02:40 pm »
That bright flash and apparent expulsion of unburned propellant about 11 seconds after launch was interesting. I wonder if any performance was lost because of that?
The same thing can be seen in earlier Shavit launch videos, so I'm guessing it is by design. No idea why though.
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Offline Comet

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #15 on: 04/10/2014 06:17 pm »
That bright flash and apparent expulsion ...... about 11 seconds after launch was interesting.

It is the jettison of the TVC unit. After the launcher gains enough speed, it uses aerodynamics control, until stages 1/2 separation.
« Last Edit: 04/10/2014 06:20 pm by Comet »

Offline Galactic Penguin SST

Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #16 on: 04/11/2014 04:46 pm »
Hmm while there are no TLEs, Space Track DOES give the orbit parameters for Ofeq 10: 332 x 609 km x 140.94 deg. (orbital period 94.01 min).  ::)
Chinese spaceflight is a cosmic riddle wrapped in a galactic mystery inside an orbital enigma... - (not) Winston Churchill

Offline Targeteer

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #17 on: 04/12/2014 07:14 pm »
Orbit from Ted Molzcan and the amateur spotting network.  It seems to another amateur to be an odd orbit for a radar bird--not circular.

Ofeq 10                                                  375 X 612 km
1 70000U          14102.09307870  .00000000  00000-0  00000-0 0    02
2 70000 141.0000 218.8591 0172000  64.0412  16.6289 15.25000000    01

http://www.satobs.org/seesat/Apr-2014/0116.html

modified by later by Brad Young to

1 70002U  14999A   14099.92856667  .00000000  00000-0  00000-0 0    01
2 70002 141.7700 213.2941 0179000  47.0000 314.6161 15.33000000    01

http://www.satobs.org/seesat/Apr-2014/0117.html
« Last Edit: 04/12/2014 07:17 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Star One

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #18 on: 04/12/2014 07:38 pm »
It should be added this is still provisional & not confirmed.

Offline gosnold

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Re: Ofeq 10 - Shavit-2 - April 9, 2014
« Reply #19 on: 04/13/2014 11:04 am »
Why should the orbit be circular? The perigee is at middle-eastern latitudes, which is presumably when the sensors will be on. Apogee can be higher to extend the lifetime of the satellite.

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