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PSLV C16, Resourcesat-2 - April 20, 2011
by
input~2
on 02 Apr, 2011 07:54
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The current indications suggest that the launch will take place sometime towards the end of April.
source
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#1
by
input~2
on 09 Apr, 2011 14:52
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Now planned for April 20 at 0442UTC
(
Source via Salo
)
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#2
by
input~2
on 12 Apr, 2011 07:14
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[moved from Indian launch schedule thread]India to launch advanced remote sensing satellite April 20‘The launch authorisiation board will review the readiness of the rocket, satellites and ground stations April 16. The countdown will begin April 18 for the scheduled lift-off April 20 at 10.12 a.m.,’ the statement said.
Here's the picture
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#3
by
Salo
on 13 Apr, 2011 04:58
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#4
by
input~2
on 14 Apr, 2011 21:33
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Extract from a recent NOTAM:
DANGER TIME: 0315 TO 0645 UTC
ROCKET TYPE: PSLV C-16
DEFINITIVE LAUNCH WINDOW IS SCHEDULED FROM 20 APRIL TO 26 APRIL 2011.
CREATED: 12 APR 02:10 2011
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#5
by
input~2
on 17 Apr, 2011 13:48
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#6
by
Salo
on 17 Apr, 2011 17:24
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#7
by
jacqmans
on 18 Apr, 2011 20:51
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April 17, 2011 PRINT THIS PAGE
PSLV-C16/RESOURCESAT-2 Mission to be launched on April 20, 2011
The Launch Authorisation Board (LAB) for PSLV-C16/RESOURCESAT-2 mission, which met on April 16, 2011 at Satish Dhawan Space Centre - SHAR, Sriharikota has cleared the launch of PSLV-C16 at 10:12 hrs (IST) on Wednesday, April 20, 2011.
LAB reviewed the readiness of the launch vehicle, spacecraft systems and ground stations and has authorised the commencement of the 54 hour Count Down during the early hours of April 18, 2011.
During the Count Down, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle will be carried out. Mandatory checks on the launch vehicle and spacecraft - including charging of batteries and pressurisation of propellant tanks will be performed. Readiness of launch infrastructure such as tracking radar systems and communication networks will also be checked.
PSLV-C16 will launch RESOURCESAT-2, YOUTHSAT and X-SAT satellites. RESOURCESAT-2 built by ISRO - the primary satellite is an advanced remote sensing satellite weighing 1206 kg for facilitating the study and management of natural resources. YOUTHSAT weighing 92 kg is a joint Indo-Russian satellite for stellar and atmospheric studies. X-SAT weighing 106 kg is a microsatellite for imaging applications built by Nanyang Technological University (NTU), Singapore.
http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Apr17_2011
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#8
by
Salo
on 18 Apr, 2011 21:37
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#9
by
input~2
on 19 Apr, 2011 19:18
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#10
by
Chris Bergin
on 20 Apr, 2011 04:37
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Moved for live coverage
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#11
by
input~2
on 20 Apr, 2011 04:38
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#12
by
Chris Bergin
on 20 Apr, 2011 04:38
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#13
by
Chris Bergin
on 20 Apr, 2011 04:40
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Not writing an article as there's not much on the vehicle etc. Not really all that interesting from an article standpoint.
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#14
by
Chris Bergin
on 20 Apr, 2011 04:40
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T-2 minutes.
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#15
by
Chris Bergin
on 20 Apr, 2011 04:41
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Doorbell noise for T-60 seconds
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#16
by
Chris Bergin
on 20 Apr, 2011 04:41
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T-30 seconds.
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#17
by
sanman
on 20 Apr, 2011 04:42
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Liftoff successful
cleared the tower
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#18
by
Chris Bergin
on 20 Apr, 2011 04:43
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#19
by
Chris Bergin
on 20 Apr, 2011 04:43
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#20
by
input~2
on 20 Apr, 2011 04:44
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#21
by
Chris Bergin
on 20 Apr, 2011 04:44
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Solids sep (ground lit and air lit)
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#22
by
Chris Bergin
on 20 Apr, 2011 04:45
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Fairing sep.
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#23
by
sanman
on 20 Apr, 2011 04:45
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+25 airlit strapon ignition successful
+67.8 groundlit strapon separation
+89 airlit strapon separation successful
+112 first stage separation
+148 PS2 ignition
+165 heatshield separation successful
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#24
by
Chris Bergin
on 20 Apr, 2011 04:46
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#25
by
Chris Bergin
on 20 Apr, 2011 04:47
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Staging 2-3. Third Stage ignition.
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#26
by
input~2
on 20 Apr, 2011 04:47
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#27
by
Chris Bergin
on 20 Apr, 2011 04:48
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Nominal performance noted on the third stage.
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#28
by
input~2
on 20 Apr, 2011 04:50
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#29
by
Chris Bergin
on 20 Apr, 2011 04:51
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Staging 3-4 Sep. Fourth Stage ingition.
Lovely moment with one controller praying.
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#30
by
Chris Bergin
on 20 Apr, 2011 04:53
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I think we're going to 1000 seconds with the fourth stage.
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#31
by
Chris Bergin
on 20 Apr, 2011 04:54
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300 seconds to MECO.
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#32
by
Chris Bergin
on 20 Apr, 2011 04:57
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150 seconds to go.
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#33
by
Chris Bergin
on 20 Apr, 2011 04:58
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#34
by
Chris Bergin
on 20 Apr, 2011 04:59
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At orbital velocity.
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#35
by
Chris Bergin
on 20 Apr, 2011 04:59
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MECO!
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#36
by
Chris Bergin
on 20 Apr, 2011 05:01
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#37
by
Chris Bergin
on 20 Apr, 2011 05:01
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And the two secondary payloads have seperated!
Well done India!!
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#38
by
input~2
on 20 Apr, 2011 05:02
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Launch success!
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#39
by
Chris Bergin
on 20 Apr, 2011 05:04
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Happy PSLV manager
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#40
by
input~2
on 20 Apr, 2011 05:16
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"After 3 more PSLV launches, GSLV launches should resume"
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#41
by
input~2
on 20 Apr, 2011 05:22
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"3 more PSLV launches are to be performed before the end of this year"
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#42
by
input~2
on 20 Apr, 2011 06:01
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Launch video on Youtube /watch?v=2nRKDUpMivw
Part II at /watch?v=ndv28Z_gjVc
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#43
by
input~2
on 20 Apr, 2011 06:11
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PSLV C-16 launch successful :-)
~Prasad
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#44
by
input~2
on 20 Apr, 2011 07:48
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Staging 3-4 Sep. Fourth Stage ingition.
Lovely moment with one controller praying.
The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan!
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#45
by
robertross
on 20 Apr, 2011 11:10
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Congrats on a successful launch.
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#46
by
Chris Bergin
on 20 Apr, 2011 13:21
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Staging 3-4 Sep. Fourth Stage ingition.
Lovely moment with one controller praying.
The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan!
Ah there we go then! He was sat in the middle of the consoles, so couldn't tell. Was a really nice moment
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#47
by
input~2
on 20 Apr, 2011 14:56
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USSTRATCOM has catalogued 4 objects for this launch:
37387/11015A no elset yet
37388/11015B in 804 x 821km incl. 98.8°
37389/11015C in 789 x 816km incl. 98.7°
37390/11015D in 805 x 824km incl. 98.8°
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#48
by
edkyle99
on 21 Apr, 2011 04:16
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Not writing an article as there's not much on the vehicle etc.
C-16 was the first "standard" PSLV with six "S9" strap on solid motors to fly since 2007. One PSLV-XL with six "S12" strap on motors and five "Core Alone" PSLVs have flown since 2007.
C-16 was also the 14th consecutive PSLV success.
- Ed Kyle
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#49
by
Chris Bergin
on 21 Apr, 2011 04:38
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Not writing an article as there's not much on the vehicle etc.
C-16 was the first "standard" PSLV with six "S9" strap on solid motors to fly since 2007. One PSLV-XL with six "S12" strap on motors and five "Core Alone" PSLVs have flown since 2007.
C-16 was also the 14th consecutive PSLV success.
- Ed Kyle
Thanks Ed - and I should qualify what I meant.....I really don't like to write articles shorter than 500 words. Would have struggled.
Good info to add to the thread of course.
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#50
by
sdsds
on 21 Apr, 2011 05:12
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C-16 was also the 14th consecutive PSLV success.
Wow!
"A streak of repeated outcomes can be an important source of information for decision makers trying to predict the outcome of the next event." (Altmann, E.M. and Burns, B.D., ICCM-2004)
The informal (n+1)/(n+2) predictor gives a 93.75% chance that the next PSLV launch will also be a success. With slightly more rigor, the probability of 14 successful launches in 14 attempts is greater than 50% only if the underlying probability of success of each single launch is greater than or equal to 95.17%. (0.9517 raised to the 14th power is 0.5.) Now trying to sound totally like a statistician: with 95% confidence we can be certain the probability of each individual success was greater than 81%. (0.81 raised to the 14th power is 0.05.)
(Your mileage may vary. I am not a mathematician. Some assumptions were made.)
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#51
by
Lewis007
on 21 Apr, 2011 10:45
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A couple of pictures of the launch
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#52
by
GClark
on 21 Apr, 2011 13:09
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Lovely moment with one controller praying.
The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan!
Ah there we go then! He was sat in the middle of the consoles, so couldn't tell. Was a really nice moment
Somehow I don't think the chairman needes to engage in the last resort of scoundrels...
Congratulations to ISRO on successful recovery of launch mojo. Upward and onward.
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#53
by
Phillip Clark
on 22 Apr, 2011 08:03
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No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.
[mod: post moved from "Indian launch schedule" thread]
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#54
by
input~2
on 22 Apr, 2011 15:33
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For Resourcesat-2, at least an orbit is given as:
805km x 824km incl. 98.78° (orbit of
former object D)
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#55
by
pradeep
on 22 Apr, 2011 18:14
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No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.
[mod: post moved from "Indian launch schedule" thread]
Some have construed this to mean that RESOURCESAT-2 is a spy sat.
The thing about the 4 ground-lit and the 2 air-lit strap ons was interesting.
ISRO has put everything from the PSLV-C16 mission into a single page -
http://isro.gov.in/scripts/pslv-c16.aspx - though I wish they had done it before the launch.
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#56
by
jcm
on 23 Apr, 2011 01:44
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No orbital data are available for Resourcesat 2 from Space-Track so I guess that the Indians are the latest to persuade the United States not to publish orbital data.
[mod: post moved from "Indian launch schedule" thread]
Some have construed this to mean that RESOURCESAT-2 is a spy sat.
Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to "defense imaging (+civilian imaging)".
- Jonathan
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#57
by
seshagirib
on 23 Apr, 2011 09:12
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However, according to this news report, even RISAT-2 is a "civilian" Sat.:
http://www.hindu.com/2011/04/22/stories/2011042254500900.htm"
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The nine IRS in service now are the Technology Experiment Satellite, the
Resourcesat-2, the Cartosat-1, 2, 2A and 2B, the Indian Mini Satellite-1, the
Radar Imaging Satellite-2 and the Oceansat-2.
They make the IRS system the largest civilian remote-sensing satellite constellation in the world.
-----
"
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#58
by
pradeep
on 23 Apr, 2011 15:09
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Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to "defense imaging (+civilian imaging)".
- Jonathan
Do you have any place where the specific request from ISRO/India was quoted as reason for the non-display of TLE information? The NORAD website does not work for me.
I have written to ISRO Tracking Station requesting for TLE. I will wait for a week before calling them for the information.
I agree with you that unavailability of TLEs makes life much dangerous for others. The US has also launched OTVs which also makes it similarly dangerous.
You cannot make such claims without at least looking for credible reasons for which the information is absent. This is purely speculative.
The website is yours and you are free to claim anything you want.
- Pradeep
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#59
by
jcm
on 23 Apr, 2011 21:15
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Like me perhaps? I think "Don't publish my orbital data please" is pretty much the DEFINITION of a spy sat at this point. It certainly leads me to believe that the Indian government consider it to be one. Of course it is 'dual use'. But there are plenty of civilian imaging satellites whose product is sometimes bought by intelligence agencies but whose tracking data is public. When one is omitted - causing increased risk of collisions and increasing tensions due to lack of transparency - the implication is that it is considered to be a military/intelligence asset by the country requesting the omission. It also violates at least the spirit of the UN convention on the registration of outer space objects, if not the letter (or, admittedly, the practical implementation).
I have therefore changed the designation of Resourcesat 2 in my database from "civilian imaging" to "defense imaging (+civilian imaging)".
- Jonathan
Do you have any place where the specific request from ISRO/India was quoted as reason for the non-display of TLE information? The NORAD website does not work for me.
I have written to ISRO Tracking Station requesting for TLE. I will wait for a week before calling them for the information.
I agree with you that unavailability of TLEs makes life much dangerous for others. The US has also launched OTVs which also makes it similarly dangerous.
You cannot make such claims without at least looking for credible reasons for which the information is absent. This is purely speculative.
The website is yours and you are free to claim anything you want.
- Pradeep
Pradeep - you're right that I am being speculative here. But it is informed speculation. I would bet money that I'm right. If it turns out there is another reason (I haven't thought of a plausible one) I'll certainly print a retraction.
And by the way, please don't take this as an anti-ISRO thing on my part. I have the greatest respect for the ISRO team and was thrilled to visit them in Bangalore and Trivandrum a few years ago. I'm equally against the suppression of the TLEs for the US OTV (and for Israeli Ofeq, French Heiios, etc.)My feeling is that by 'naming and shaming' those who suppress such information, rather than letting it go quietly unmentioned, they will eventually be persuaded to change their policy.
- Jonathan
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#60
by
pradeep
on 25 Apr, 2011 09:39
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ISRO has posted on its website about various orbit correcting procedures done on RESOURCESAT-2 since the PSLV was not able to place it in an accurate enough orbit. Orbit trimming was done on April 22:
http://isro.gov.in/pressrelease/scripts/pressreleasein.aspx?Apr25_2011More over the report says:
Immediately after the injection of the satellite, the two solar panels were deployed. The three Imaging Cameras have been oriented towards Earth. All operations and health checks required prior to switching on the three Imaging Cameras have been satisfactorily completed.
Orbital trimming manoeuvre was conducted successfully on April 22, 2011, and RESOURCESAT-2 is now placed in the final orbital configuration in a sun-synchronous polar orbit with perigee of 813 km; apogee of 825 km and inclination of 98.78 degree.
Operation of the Imaging cameras is scheduled to commence on April 28, 2011. The first imaging pass on April 28th is expected to cover about 3000 km stretch of Indian landmass from JOSHIMUT (in Uttarakhand) to KANNUR (in Kerala).
Pradeep
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#61
by
input~2
on 25 Apr, 2011 10:28
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An amateur-produced elset results in the following orbit for Resourcesat-2: 821 x 824km inclined 98.78° on April 23 at 2130UTC
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#62
by
jcm
on 26 Apr, 2011 04:48
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Pradeep - you're right that I am being speculative here. But it is informed speculation. I would bet money that I'm right. If it turns out there is another reason (I haven't thought of a plausible one) I'll certainly print a retraction.
- Jonathan
Pradeep - you should have taken the bet! I was wrong. I was wrong, wrong, wrong. As you pointed out to me on facebook, TLEs have now belatedly become available. I hereby retract. Egg, face, me, all over.
- Jonathan
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#63
by
pradeep
on 26 Apr, 2011 15:45
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Pradeep - you should have taken the bet! I was wrong. I was wrong, wrong, wrong. As you pointed out to me on facebook, TLEs have now belatedly become available. I hereby retract. Egg, face, me, all over.
- Jonathan
Jonathan
I am a new satellite hobbyist and my position was only out of the fact that India has never supressed TLEs. I exchanged emails on this with Ted Molczan and to quote him -
Official TLEs of Resourcesat 2 finally began to be released today (Apr 25 UTC), on Space Track. So far, only two TLE
sets have appeared, and it is too soon to judge whether this is a permanent change of policy.
I am new and am trying to learn! ISRO, on its own never releases such information because probably there is no consumer of such information in India. I think you must try and find out why there was a delay in the release of this information. Just for curiosity's sake.
You don't have to apologise!
Pradeep
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#64
by
Phillip Clark
on 26 Apr, 2011 16:10
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It is certainly very strange that all of the objects from this launch had Two-Line Orbital Elements issued by USSSN immediately after the launch, but it took so long for data for the main satellite to appear.
I am sure that there is an innocent explanation but I cannot immediately think of it, other than some dumb bureaucratic error within USSSN.
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#65
by
jcm
on 26 Apr, 2011 20:03
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It is certainly very strange that all of the objects from this launch had Two-Line Orbital Elements issued by USSSN immediately after the launch, but it took so long for data for the main satellite to appear.
I am sure that there is an innocent explanation but I cannot immediately think of it, other than some dumb bureaucratic error within USSSN.
Well, note that between the first set of elements for A (actually issued in error under the D object's number) and the new set, there was an orbit maneuver.
So my alternate theory is that it did an orbit adjust while they were still trying to figure out which object was which, and they lost the damn thing for a few days. Not very impressive if true.
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#66
by
pradeep
on 27 Apr, 2011 06:20
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Well, note that between the first set of elements for A (actually issued in error under the D object's number) and the new set, there was an orbit maneuver.
So my alternate theory is that it did an orbit adjust while they were still trying to figure out which object was which, and they lost the damn thing for a few days. Not very impressive if true.
They seem to have changed all of the designations on April 21. RESOURCESAT-2 was initially labelled D and then changed to A. YOUTHSAT was the original A became B. XSat which was B became C. And the rocket body which was C became D. So, now:
2011-015A - RESOURCESAT-2
2011-015B - YOUTHSAT
2011-015C - XSat
2011-015D - rocket body
No idea on why this was done.
-Pradeep
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#67
by
jcm
on 27 Apr, 2011 20:02
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Well, note that between the first set of elements for A (actually issued in error under the D object's number) and the new set, there was an orbit maneuver.
So my alternate theory is that it did an orbit adjust while they were still trying to figure out which object was which, and they lost the damn thing for a few days. Not very impressive if true.
They seem to have changed all of the designations on April 21. RESOURCESAT-2 was initially labelled D and then changed to A. YOUTHSAT was the original A became B. XSat which was B became C. And the rocket body which was C became D. So, now:
2011-015A - RESOURCESAT-2
2011-015B - YOUTHSAT
2011-015C - XSat
2011-015D - rocket body
No idea on why this was done.
-Pradeep
They do that kind of stuff pretty often - confusion when they are first tracking a cluster of sats not knowing which is which.
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#68
by
pradeep
on 03 May, 2011 03:07
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ISRO has posted RESOURCESAT-2 LISS-IV pictures in the set released as part of ISRO efforts to find the Arunachal Pradesh CM. You can find the picture posted here -
http://www.nrsc.gov.in/arun/Slide3.JPG - not high quality because of cloud cover.
Pradeep
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#69
by
Satori
on 04 May, 2011 12:29
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Is there any indication of the dates when the diferent stages were mounted on the launch platform?
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#70
by
input~2
on 14 May, 2011 13:30
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#71
by
vyoma
on 22 Jul, 2023 02:34
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From June 2023 monthly report:
https://www.isro.gov.in/media_isro/pdf/Monthly_summary/Monthly_Summary_June2023_Eng.pdfThere was a Critical conjunction between Resourcesat-2 and another active satellite MetopC owned by Eumetsat on 7 June 2023. ISRO coordinated with both MetopC team and NASA’s CARA team regarding this conjunction. Resourcesat-2 has undergone regular ground track maintenance manoeuvre and the conjunction is mitigated.
