Author Topic: LIVE: PSLV C20 - SARAL - February 25, 2013 (12:31 UTC)  (Read 81259 times)

Offline mdo

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Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
« Reply #140 on: 02/25/2013 06:33 pm »
TU Graz reports first contact with the 1st Austrian satellite, TUGSAT-1, at 4:41 p.m. (presumably CET).

Offline input~2

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Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
« Reply #141 on: 02/25/2013 06:57 pm »
I find it interesting that this map excludes Sri Lanka... And it looks like that path (if accurate) would take it straight over Sri Lanka.

Does India have some sort of treaty and or understanding that allows this?

EDIT: I have attached an image of the path overlaying a Google map screenshot.
The LV track on the screen captured map is schematic (Sri Lanka has disappeared! ;D ). The map below for the debris avoidance zones shows a dogleg to avoid overflying Sri Lanka
« Last Edit: 02/25/2013 06:59 pm by input~2 »

Offline jsmjr

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Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
« Reply #142 on: 02/25/2013 07:01 pm »
I find it interesting that this map excludes Sri Lanka... And it looks like that path (if accurate) would take it straight over Sri Lanka.

Does India have some sort of treaty and or understanding that allows this?

EDIT: I have attached an image of the path overlaying a Google map screenshot.
The LV track on the screen captured map is schematic (Sri Lanka has disappeared! ;D ). The map below for the debris avoidance zones shows a dogleg to avoid overflying Sri Lanka

Here's another view from http://www.zarya.info/blog/?p=646

Offline Salo

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Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
« Reply #143 on: 02/25/2013 07:02 pm »

Offline input~2

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Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
« Reply #144 on: 02/25/2013 07:14 pm »
A first object has been catalogued by USSTRATCOM
  • 39086/2013-009A in 705 x 771 km x 98.64°
  • 6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°
  • « Last Edit: 02/25/2013 07:15 pm by input~2 »

    Offline Star One

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #145 on: 02/25/2013 07:33 pm »
    A first object has been catalogued by USSTRATCOM
  • 39086/2013-009A in 705 x 771 km x 98.64°
  • 6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°


  • Which of those is NEOSSAT?[/list]

    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #146 on: 02/25/2013 07:58 pm »
    Another interpretation of the impact zones from the navigational warning

    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #147 on: 02/25/2013 08:09 pm »
    A first object has been catalogued by USSTRATCOM
  • 39086/2013-009A in 705 x 771 km x 98.64°
  • 6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°


  • Which of those is NEOSSAT?
    Wait for 2013-009H and 2013-009I  :D
    « Last Edit: 02/25/2013 08:16 pm by input~2 »

    Online jcm

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #148 on: 02/25/2013 08:11 pm »
    A first object has been catalogued by USSTRATCOM
  • 39086/2013-009A in 705 x 771 km x 98.64°
  • 6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°


  • Which of those is NEOSSAT?
    Wait for 2013-009H and 2013-009I :D

    You mean 2013-009J; they don't use I or O

    I expect it'll take a while to figure out which is which - a day or so
    for the big objects and longer for the smaller ones
    « Last Edit: 02/25/2013 08:18 pm by input~2 »
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    Jonathan McDowell
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    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #149 on: 02/25/2013 08:23 pm »
    You mean 2013-009J; they don't use I or O
    Thanks Jonathan for this correction!

    Offline Lars_J

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #150 on: 02/25/2013 08:47 pm »
    I find it interesting that this map excludes Sri Lanka... And it looks like that path (if accurate) would take it straight over Sri Lanka.

    Does India have some sort of treaty and or understanding that allows this?

    EDIT: I have attached an image of the path overlaying a Google map screenshot.
    The LV track on the screen captured map is schematic (Sri Lanka has disappeared! ;D ). The map below for the debris avoidance zones shows a dogleg to avoid overflying Sri Lanka

    Here's another view from http://www.zarya.info/blog/?p=646

    Thanks! That chart clears it up... The 2nd stage has quite a job to handle the dog-leg maneuver.

    Offline antriksh

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #151 on: 02/26/2013 02:47 am »
    Seems like this might be one of the more dramatic examples of course shaping among world-wide launch sites?  I suppose that imposes some performance penalty, as would trying to shoot for the poles from anywhere this close to the equator?

    Performance penalty is close to 500 Kgs of payload loss. ISRO is considering  second  spaceport that will not require such course shaping.
    Nasadiya Sukta:
    Srishti se pehle sat nahin thaa, asat bhi nahin | Antariksh bhi nahin, aakaash bhi nahin thaa | chhipaa thaa kyaa, kahaan, kisne dhakaa thaa | us pal to agam, atal jal bhi kahaan thaa ||

    From: 1st verse of 129th Hymn of the 10th Book of Rig Veda

    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #152 on: 02/26/2013 07:19 am »
    and here are the 8th and 9th objects 2013-009H and 2013-009J
    39093/2013-009H in 773 x 784 km x 98.62°
    39094/2013-009J in 771 x 784 km x 98.61°

    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #153 on: 02/26/2013 07:47 am »
    Quote
    The launch was delayed by five minutes due to the presence of space debris in the flight path.
    source

    Offline jacqmans

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #154 on: 02/26/2013 08:12 am »
    Honourable President of India Witnesses the Successful Launch of Seven Satellites onboard PSLV-C20
     
     ISRO's Polar Satellite Launch Vehicle, PSLV-C20, successfully launched the joint Indo-French Satellite, SARAL, today (February 25, 2013) in its twenty third flight from Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. Six other satellites, namely, UNIBRITE (NLS 8.1) and BRITE (NLS 8.2) from Austria, SAPPHIRE and NEOSSAT from Canada, AAUSAT-3 (NLS 8.3) from Denmark; and STRaND-1 from the United Kingdom, have also been launched into their planned orbits along with SARAL.

    Honourable President of India, Shri Pranab Mukherjee along with the Governor of Andhra Pradesh, Shri E. S. L. Narasimhan, Chief Minister of Andhra Pradesh, Shri N Kiran Kumar Reddy, Minister of State (Prime Minister's Office), Shri V Narayanasamy and other dignitaries from the Government of Andhra Pradesh witnessed the launch from the state-of-the-art Mission Control Centre of SDSC. Honourable President, in his post launch remarks, congratulated the scientists and engineers of ISRO for the successful launch.

    At the completion of the countdown, PSLV-C20 lifted off from the First Launch Pad at SDSC SHAR, at 1801 hrs (IST) with the ignition of the first stage of the launch vehicle. The important flight events, namely, stage ignitions, heat-shield separation, stage separations and satellite injections took place exactly as planned.

    After a flight of 17 minutes 55 seconds, the main payload, SARAL, weighing 407 kg was injected to an orbit very close to the intended orbit. Following this, the six auxiliary satellites were also successfully injected.

    This has been the twenty second successive successful launch of ISRO's workhorse launch vehicle PSLV. Since its first successful launch in 1994, PSLV has launched 27 Indian satellites and 35 satellites for customers from abroad, including the satellites launched today. It has also launched India's geosynchronous satellites, Kalpana-1 and GSAT-12, thereby proving its versatility. PSLV also launched India's first spacecraft mission to moon, Chandrayaan-1, in 2008. It is scheduled to launch India's first interplanetary mission, the Mars Orbiter Mission (MOM) spacecraft, by the end of this year.

    Satellite with Argos and Altika (SARAL) is an oceanographic satellite jointly developed by ISRO and the French Space Agency CNES. The satellite is built by ISRO, whereas CNES contributed the ARGOS and ALTIKA payloads. Data from SARAL will be useful for researchers besides having many practical applications like marine meteorology and sea state forecasting, climate monitoring, continental ice studies, environmental monitoring, protection of biodiversity and improvement in maritime security.

    ISRO Telemetry, Tracking and Command Network (ISTRAC) in Bangalore took over the SARAL's monitoring and control operations immediately after its injection. Following the automatic deployment of SARAL's solar panels, shortly after reaching orbit, all the subsequent operations are proceeding normally.
     
    http://www.isro.org/pressrelease/scripts/pressreleasein.aspx?Feb25_2013
    Jacques :-)

    Offline seshagirib

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #155 on: 02/26/2013 01:24 pm »
    Just after PS4 ignition, the V vs T plot became a little jagged, with atleast a couple of data points way off. Could this be due to a noisy INS or data corruption in the communication link?
    http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=29894.0;attach=498103
    « Last Edit: 03/02/2013 03:56 pm by seshagirib »
    astronaut on space ship earth

    Offline input~2

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    Offline spaceboy89

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #157 on: 02/27/2013 10:55 am »
    6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°


  • SSC are pretty sure that object E is STRaND-1, though still have to wait for them to drift apart more to be sure

    Online jcm

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #158 on: 02/28/2013 05:20 am »
    6 more objects have now been catalogued
  • 39087/2013-009B in 772 x 787 km x 98.63°
  • 39088/2013-009C in 775 x 787 km x 98.63°
  • 39089/2013-009D in 776 x 784 km x 98.63°
  • 39090/2013-009E in 772 x 783 km x 98.62°
  • 39091/2013-009F in 770 x 784 km x 98.64°
  • 39092/2013-009G in 773 x 788 km x 98.63°


  • SSC are pretty sure that object E is STRaND-1, though still have to wait for them to drift apart more to be sure

    The objects have now been reassigned, per SpaceTrack's facebook:

    39086 was moved to 39093 (PSLV R/B)
    39087 was moved to 39094 (PSLV DEB)
    39092 was moved to 39086 (SARAL)
    39093 was moved to 39087 (AAUSAT3)
    39094 was moved to 39092 (CANX 3B)

    and STRAND is confirmed as 39090  2013-009E
    -----------------------------

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    Offline input~2

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    Re: LIVE: PSLV C20 - Saral - February 25, 2013 (1231UTC)
    « Reply #159 on: 02/28/2013 07:54 am »
    so the final list is:
    39086/2013-009A SARAL
    39087/2013-009B AAUSAT3
    39088/2013-009C Sapphire
    39089/2013-009D NEOSSat
    39090/2013-009E STRaND 1
    39091/ 2013-009F CANX 3A (BRITE)
    39092/2013-009G CANX 3B (UNIBRITE)
    39093/2013-009H PSLV R/B (PS4)
    39094/2013-009J PSLV DEB (DLA-U)                      

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