SMOS & Proba-2 Launch Timeline

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A timeline of the most critical events during the dual Proba-2/SMOS launch from Plesetsk Cosmodrome in northern Russia on 2 November. Launch is set for 02:50 CET.

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  • About 70 minutes after launch, SMOS successfully separated from the Rockot’s Breeze-KM upper stage. Shortly after, the satellite’s initial telemetry was acquired by the Hartebeesthoek ground station (near Johannesburg, South Africa). The upper stage then performed additional manoeuvres to arrive at a slightly lower orbit and Proba-2 was released too, some 3 hours into flight. I don't have a confirmed, exact time that Redu got the Proba signal, but you can watch it (and see the time) in the ESA TV replay, here: http://www.esa.int/ops
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  • Any news from Proba-2. Did Redu pick up a signal???
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SMOS & Proba-2 Launch Timeline

  1. 1. Pre-launch and ascent phase – SMOS& Proba-2 onboard Rockot Ph UTC Time CET Event Notes 01:10:51 02:10:51 SMOS & Proba-2 satellites Go given by SMOS L-40 min Space segment GO/NOGO confirmation Project team Pre-Launch Countdown Sequence L-30 min Launch command issued 01:25:51 02:25:51 Loading of launcher flight program L-25 min Start of automatic countdown 01:40:51 02:40:51 Withdrawal of Launch Service Tower from L-10 min launch pad L-3 min Latest emergency GO/NOGO signal from Emergency abort in satellites case of any problem onboard satellites 01:50:37 02:50:37 End of gyro settings Launcher is now L-14 sec Launcher switches to inertial platform autonomous L-3.2 sec Ignition of Stage 1 main engine L 01:50:51 02:50:51 Rockot lift off with SMOS & Proba-2 Liftoff 01:52:53 02:52:53 Separation of Stage 1 booster L+2 min Ignition of Stage 2 booster 01:53:36 02:53:36 Jettison fairing Launcher separates L+2.75 min into two sections 01:55:56 02:55:56 Separation of Stage 2 booster Ascent Phase (SMOS&P2) L+5 min 01:56:02 02:56:02 First ignition of Breeze-KM Duration of first burn: 594 L+5.2 min Injection into transfer orbit sec 02:07:17 03:07:17 Attitude manoeuvre Turn 1 orients upper Duration of Turn 1: 200 L+16.5 min stage towards the Sun sec 02:50:07 03:50:57 Attitude manoeuvre Turn 2 to reorient Duration of Turn 2: 200 L+59.3 min upper stage in flight direction & attain sec correct attitude for Burn 2 02:53:31 03:53:31 Second ignition of Breeze-KM Duration of Burn 2: 65 L+1hr:2.7min Injection into SMOS orbit sec 02:56:52 03:56:52 Attitude manoeuvre Turn 3 to orient upper Duration of Turn 3: 200 L+1hr:6min stage in SMOS separation attitude sec 03:00:44 04:00:44 Separation of SMOS satellite into final orbit: SMOS placed into final S-1 L+1hr:10min 749 x 767 km & 98.4 degree inclination orbit; start of automatic sequence
  2. 2. Proba-2 Timeline Events - after separation of SMOS Ph UTC CET Event Notes 03:13:57 04:13:57 First ignition of Breeze-KM Vernier Duration of Vernier Proba-2 Transfer Orbit Sequence L+1hr:23min Engines Engines Burn 1: 17.2 sec Injection into transfer orbit 03:57:32 04:57:32 Second ignition of Breeze-KM Vernier Duration of Vernier L+2hr:6min Engines Engines Burn 2: 17.0 sec Injection into Proba-2 final orbit 04:07:17 05:07:17 Separation of interstage Adapter L+2hr:16min System (Adapter Cone between SMOS and Proba-2) 04:46:14 05:46:14 Attitude Manoeuvre Turn 9 to orient Duration of Turn 9: 200 L+2hr:55min upper stage in Proba-2 separation sec attitude & direction S-2 04:50:06 05:50:06 Separation of Proba-2 satellite into final Proba-2 injected into L+2hr:59min orbit: 725 x 725 km & 98.3 degree final orbit inclination 05:09:17 06:09:17 Attitude Manoeuvre Turn 10 to orient Duration of Turn 10: Removal of Upper Stage from L+3hr:18min Breeze KM for removal of upper stage 100 sec from Proba-2 orbit 05:10:57 06:10:57 Third ignition of Breeze-KM Vernier Duration of Vernier P2 Orbit L+3hr:20min Engines Deorbiting of Upper Stage Engines Burn 3: 100 sec 05:12:42 06:12:42 Passivation of Upper Stage: Passivation Phase L+3hr:22min depressurise Breeze-KM tanks duration: 1100 sec 05:31:02 06:31:02 End of Launch Phase SMOS & Proba-2 L+3hr:40min End 05:31:02 06:31:02 End of Launch Phase
  3. 3. Proba-2 Timeline Events, after separation of Proba-2 from launcher Ph UTC CET Event Notes S-2 04:50:06 05:50:06 Separation of Proba-2 satellite into final Proba-2 injected into L+2hr:59min orbit: 725 x 725 km & 98.3 degree final orbit inclination 04:50:56 05:50:56 Satellite switch-on and activation; solar panel deployment Proba-2 Activation: Automatic S-2+50sec 04:55:09 05:55:09 End of solar panel deployment Sequence S-2+5min:3sec 05:00:59 06:00:59 Satellite assumes constant magnetic Proba-2 oriented along S-2+10min:53sec field mode Earth’s magnetic field 08:20:59 09:20:59 Satellite in stable magnetic mode S- 2+210min:53sec 04:59:10 to 05:59:10 First signal acquisition by stations at First visibility duration: 20 Acquisition of Signal 05:19:10 Redu, Kiruna, then Svalbard: min confirmation of satellite activation & orbit injection 06:39:50 to 07:39:50 Second signal acquisition by stations at Second visibility duration: 20 06:59:50 Redu, Kiruna, and Svalbard: verify min satellite status and upload first commands

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