Author Topic: PSLV C16, Resourcesat-2 - April 20, 2011  (Read 40251 times)

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
PSLV C16, Resourcesat-2 - April 20, 2011
« on: 04/02/2011 07:54 am »
Quote
The current indications suggest that the launch will take place sometime towards the end of April.
source
« Last Edit: 06/19/2013 03:57 pm by input~2 »

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: PSLV C16 launch - April 2011
« Reply #1 on: 04/09/2011 02:52 pm »
Now planned for April 20 at 0442UTC
(Source  via Salo :) )                      

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: PSLV C16 launch - April 2011
« Reply #2 on: 04/12/2011 07:14 am »
[moved from Indian launch schedule thread]

India to launch advanced remote sensing satellite April 20
Quote
‘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
« Last Edit: 04/12/2011 05:23 pm by input~2 »

Offline Salo

  • Senior Member
  • *****
  • Posts: 11074
  • Odessa, Ukraine
  • Liked: 4072
  • Likes Given: 3442
Re: PSLV C16 launch - April 2011
« Reply #3 on: 04/13/2011 04:58 am »

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: PSLV C16 launch - April 2011
« Reply #4 on: 04/14/2011 09:33 pm »
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

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
« Last Edit: 04/18/2011 08:06 am by input~2 »

Offline Salo

  • Senior Member
  • *****
  • Posts: 11074
  • Odessa, Ukraine
  • Liked: 4072
  • Likes Given: 3442
Re: PSLV C16 launch - April 2011
« Reply #6 on: 04/17/2011 05:24 pm »

Offline jacqmans

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 21698
  • Houten, The Netherlands
  • Liked: 8525
  • Likes Given: 318
Re: PSLV C16 launch - April 2011
« Reply #7 on: 04/18/2011 08:51 pm »
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
Jacques :-)

Offline Salo

  • Senior Member
  • *****
  • Posts: 11074
  • Odessa, Ukraine
  • Liked: 4072
  • Likes Given: 3442
« Last Edit: 04/18/2011 09:50 pm by Salo »

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
« Last Edit: 04/20/2011 04:36 am by input~2 »

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #10 on: 04/20/2011 04:37 am »
Moved for live coverage
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #11 on: 04/20/2011 04:38 am »
4 minutes to go
Live on http://webcast.gov.in/live/

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #12 on: 04/20/2011 04:38 am »
Under 5 minutes.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #13 on: 04/20/2011 04:40 am »
Not writing an article as there's not much on the vehicle etc. Not really all that interesting from an article standpoint.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #14 on: 04/20/2011 04:40 am »
T-2 minutes.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #15 on: 04/20/2011 04:41 am »
Doorbell noise for T-60 seconds :)
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #16 on: 04/20/2011 04:41 am »
T-30 seconds.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline sanman

  • Senior Member
  • *****
  • Posts: 5964
  • Liked: 1305
  • Likes Given: 8
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #17 on: 04/20/2011 04:42 am »
Liftoff successful

cleared the tower

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #18 on: 04/20/2011 04:43 am »
LAUNCH!!
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #19 on: 04/20/2011 04:43 am »
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #20 on: 04/20/2011 04:44 am »

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #21 on: 04/20/2011 04:44 am »
Solids sep (ground lit and air lit)
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #22 on: 04/20/2011 04:45 am »
Fairing sep.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline sanman

  • Senior Member
  • *****
  • Posts: 5964
  • Liked: 1305
  • Likes Given: 8
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #23 on: 04/20/2011 04:45 am »
+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

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #24 on: 04/20/2011 04:46 am »
Looks like good traj.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #25 on: 04/20/2011 04:47 am »
Staging 2-3. Third Stage ignition.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #26 on: 04/20/2011 04:47 am »

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #27 on: 04/20/2011 04:48 am »
Nominal performance noted on the third stage.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #28 on: 04/20/2011 04:50 am »

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #29 on: 04/20/2011 04:51 am »
Staging 3-4 Sep. Fourth Stage ingition.

Lovely moment with one controller praying.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #30 on: 04/20/2011 04:53 am »
I think we're going to 1000 seconds with the fourth stage.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #31 on: 04/20/2011 04:54 am »
300 seconds to MECO.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #32 on: 04/20/2011 04:57 am »
150 seconds to go.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #33 on: 04/20/2011 04:58 am »
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #34 on: 04/20/2011 04:59 am »
At orbital velocity.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #35 on: 04/20/2011 04:59 am »
MECO!
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #36 on: 04/20/2011 05:01 am »
Main sat S/C Sep.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #37 on: 04/20/2011 05:01 am »
And the two secondary payloads have seperated!

Well done India!! :)
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #38 on: 04/20/2011 05:02 am »
Launch success!

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #39 on: 04/20/2011 05:04 am »
Happy PSLV manager ;D
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #40 on: 04/20/2011 05:16 am »
"After 3 more PSLV launches, GSLV launches should resume"

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #41 on: 04/20/2011 05:22 am »
"3 more PSLV launches are to be performed before the end of this year"

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #42 on: 04/20/2011 06:01 am »
Launch video on Youtube   /watch?v=2nRKDUpMivw
Part II at    /watch?v=ndv28Z_gjVc
« Last Edit: 04/20/2011 06:59 am by input~2 »

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #43 on: 04/20/2011 06:11 am »
PSLV C-16 launch successful :-)

~Prasad

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #44 on: 04/20/2011 07:48 am »
Staging 3-4 Sep. Fourth Stage ingition.

Lovely moment with one controller praying.

The "controller praying" was actually ISRO chairman Dr. K. Radhakrishnan! ;)

Offline robertross

  • Canadian Member
  • Senior Member
  • *****
  • Posts: 17939
  • Westphal, Nova Scotia
  • Liked: 659
  • Likes Given: 7659
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #45 on: 04/20/2011 11:10 am »
Congrats on a successful launch.

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #46 on: 04/20/2011 01:21 pm »
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 :)
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #47 on: 04/20/2011 02:56 pm »
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°
« Last Edit: 04/20/2011 02:57 pm by input~2 »

Offline edkyle99

  • Expert
  • Senior Member
  • *****
  • Posts: 15341
    • Space Launch Report
  • Liked: 8471
  • Likes Given: 1340
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #48 on: 04/21/2011 04:16 am »
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

Offline Chris Bergin

Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #49 on: 04/21/2011 04:38 am »
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.
Support NSF via L2 -- Help improve NSF -- Site Rules/Feedback/Updates
**Not a L2 member? Whitelist this forum in your adblocker to support the site and ensure full functionality.**

Offline sdsds

  • Senior Member
  • *****
  • Posts: 7086
  • “With peace and hope for all mankind.”
  • Seattle
  • Liked: 1944
  • Likes Given: 1907
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #50 on: 04/21/2011 05:12 am »
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.)
— 𝐬𝐝𝐒𝐝𝐬 —

Offline Lewis007

  • Full Member
  • ****
  • Posts: 1661
  • the Netherlands
  • Liked: 549
  • Likes Given: 119
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #51 on: 04/21/2011 10:45 am »
A couple of pictures of the launch

Offline GClark

  • Full Member
  • ***
  • Posts: 377
  • Liked: 55
  • Likes Given: 5
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #52 on: 04/21/2011 01:09 pm »
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.

Offline Phillip Clark

  • Senior Member
  • *****
  • Posts: 2616
  • Hastings, England
  • Liked: 557
  • Likes Given: 1078
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #53 on: 04/22/2011 08:03 am »
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]
« Last Edit: 04/22/2011 03:04 pm by input~2 »
I've always been crazy but it's kept me from going insane - WJ.

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #54 on: 04/22/2011 03:33 pm »
For Resourcesat-2, at least an orbit is given as:
805km x 824km incl. 98.78° (orbit of former object D)
« Last Edit: 04/22/2011 03:59 pm by input~2 »

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #55 on: 04/22/2011 06:14 pm »
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.

Offline jcm

  • Senior Member
  • *****
  • Posts: 3593
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1235
  • Likes Given: 761
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #56 on: 04/23/2011 01:44 am »
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
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline seshagirib

  • Full Member
  • ***
  • Posts: 328
  • terra firma
  • Liked: 25
  • Likes Given: 37
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #57 on: 04/23/2011 09:12 am »
However, according to this news report, even RISAT-2 is a "civilian" Sat.:

http://www.hindu.com/2011/04/22/stories/2011042254500900.htm

"
-----
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.
-----
"
astronaut on space ship earth

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #58 on: 04/23/2011 03:09 pm »
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

Offline jcm

  • Senior Member
  • *****
  • Posts: 3593
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1235
  • Likes Given: 761
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #59 on: 04/23/2011 09:15 pm »
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
« Last Edit: 04/23/2011 09:21 pm by jcm »
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #60 on: 04/25/2011 09:39 am »
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_2011

More over the report says:
Quote
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

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #61 on: 04/25/2011 10:28 am »
An amateur-produced elset results in the following orbit for Resourcesat-2: 821 x 824km inclined 98.78° on April 23 at 2130UTC
« Last Edit: 04/25/2011 10:40 am by input~2 »

Offline jcm

  • Senior Member
  • *****
  • Posts: 3593
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1235
  • Likes Given: 761
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #62 on: 04/26/2011 04:48 am »
   


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
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: LIVE: Indian PSLV C16 launch - April 20, 2011
« Reply #63 on: 04/26/2011 03:45 pm »
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 -
Quote
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

Offline Phillip Clark

  • Senior Member
  • *****
  • Posts: 2616
  • Hastings, England
  • Liked: 557
  • Likes Given: 1078
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #64 on: 04/26/2011 04:10 pm »
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.
I've always been crazy but it's kept me from going insane - WJ.

Offline jcm

  • Senior Member
  • *****
  • Posts: 3593
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1235
  • Likes Given: 761
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #65 on: 04/26/2011 08:03 pm »
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.
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #66 on: 04/27/2011 06:20 am »
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

Offline jcm

  • Senior Member
  • *****
  • Posts: 3593
  • Jonathan McDowell
  • Somerville, Massachusetts, USA
    • Jonathan's Space Report
  • Liked: 1235
  • Likes Given: 761
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #67 on: 04/27/2011 08:02 pm »
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.
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline pradeep

  • Member
  • Posts: 42
  • Mumbai, India
    • Pradeep's Blog
  • Liked: 0
  • Likes Given: 0
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #68 on: 05/03/2011 03:07 am »
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

Offline Satori

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 14408
  • Campo do Geręs - Portugal
  • Liked: 1953
  • Likes Given: 1140
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #69 on: 05/04/2011 12:29 pm »
Is there any indication of the dates when the diferent stages were mounted on the launch platform?

Offline input~2

  • Moderator
  • Global Moderator
  • Senior Member
  • *****
  • Posts: 6799
  • Liked: 1532
  • Likes Given: 567
Re: Indian PSLV C16 launch - April 20, 2011
« Reply #70 on: 05/14/2011 01:30 pm »
Initial Resourcesat-2 hi-res images
http://www.nrsc.gov.in/tmp-images/Resourcesat2.html
« Last Edit: 05/15/2011 04:43 pm by input~2 »

Offline vyoma

  • Full Member
  • ****
  • Posts: 1878
  • India
  • Liked: 850
  • Likes Given: 127
Re: PSLV C16, Resourcesat-2 - April 20, 2011
« Reply #71 on: 07/22/2023 02:34 am »
From June 2023 monthly report: https://www.isro.gov.in/media_isro/pdf/Monthly_summary/Monthly_Summary_June2023_Eng.pdf

Quote
There 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.

Tags:
 

Advertisement NovaTech
Advertisement Northrop Grumman
Advertisement
Advertisement Margaritaville Beach Resort South Padre Island
Advertisement Brady Kenniston
Advertisement NextSpaceflight
Advertisement Nathan Barker Photography
1