2003-002A
EOS Laser ALT-1, or ICESAT (Ice, Cloud and Land Elevation Satellite), launched to 705 x 705 x 94. ICESAT is built by Ball Aerospace/Boulder under an IDIQ contract with the BCP-2000 (Ball Commercial Platform) bus. ICESAT will study the Greenland and Antarctice ice sheets.
The 300 kg ICESAT is mounted on the RH-DPAF (Reduced Height Dual Payload Attach Fitting) containing CHIPSAT. RH-DPAF consists of an upper cone/cylinder and a lower cone.
The GLAS lidar instrument is a 1-m telescope with a ND-YAG 0.5 and 1 micron laser. ICESAT is 3.1m tall, 1.9m in dia, with two 2.1 x 2.3m solar panels for an approx 6.5m span.
The first of ICESAT's 3 lasers failed after only 36 days due to a solder contamination problem. A second laser was activated in Sep 2003.
| ICESAT | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2003 Jan 13 | 0045:00 | Launch by Delta 7320-10 | V SLC2W |
| T+1:04 SRM1-3 burnout | |||
| T+1:39 SRM 1-3 sep 32 km | -6350 x 35? | ||
| T+4:24 MECO | |||
| T+4:32 St 1 sep | |||
| T+4:37 SES-1 121 km 4.830 km/s | -4900 x 150? | ||
| T+4:57 Fairing 135 km 4.892 km/s | -4830 x 170 ? | ||
| 0056:05 | T+11:05 SECO-1 | 185 x 597 x 93.96 | |
| 0144:50 | T+59:50 SES-2 | ||
| 0144:58 | T+59:58 SECO-2 | ||
| 0149:00 | T+1:04:00 Icesat sep | 585 x 591 x 94.0 | |
| 0205:00 | T+1:20:00 RH DPAF sep | 559 x 585 x 94.0 | |
| 0208:20 | T+1:23:20 Chipsat sep | 559 x 585 x 94.0 | |
| T+1:26:40 Stage 2 retro | |||
| T+1:46:40 SES-3 evasive | 561 x 583 x 94.0 | ||
| T+1:46:45 SECO-3 | 498 x 585 x 94.84 | ||
| T+2:06:40 SES-4 depletion | |||
| T+2:07:16 SECO-4 depletion | 198 x 546 x 97.30 | ||
| 2003 Jan 13 | 96.40 578 x 593 x 94.0 | ||
| 2003 Jan 20 | 96.39 577 x 593 x 94.0 | ||
| 2003 Jan 23 | 96.40 578 x 593 x 94.0 | ||
| 2214 | orbit raise | 96.50 584 x 598 x 94.0 | |
| 2003 Jan 26 | orbit raise | 96.59 588 x 602 x 94.0 | |
| 2003 Feb 8 | 96.61 590 x 601 x 94.0 | ||
| 2003 Feb 20 | GLAS turned on | ||
| 2003 Mar 12 | 96.61 594 x 598 x 94.0 | ||
| 2003 Mar 28 | GLAS laser failed (1 of 3), science suspended | ||
| 2003 Jul 2 | 96.61 594 x 598 x 94.0 | ||
| 2003 Sep 25 | Laser 2 activated | ||
| 2009 Apr | End of primary mission? | ||
| 2009 Oct 11 | Laser 3 failed, end of science data | ||
| 2010 Feb 24 | Attempts to restart lasers abandoned | ||
| 2010 Feb 24 | Decommissioning phase | ||
| 2010 Jun 23 | 96.59 592 x 597 x 94.0 | ||
| 2010 Jun 24 | Lower orbit | 96.33 572 x 593 x 94.0 | |
| 2010 Jul 1 | 96.33 572 x 593 x 94.0 | ||
| 2010 Jul 7 | 95.65 509 x 591 x 94.0 | ||
| 2010 Jul 8 | Lower orbit | 94.32 410 x 561 x 94.1 | |
| 2010 Jul 12 | Lower orbit | 93.08 265 x 584 x 94.0 | |
| 2010 Jul 15 | Lower orbit | 92.38 200 x 581 x 94.0 | |
| 2010 Aug 12 | 90.81 192 x 436 x 94.0 | ||
| 2010 Aug 30 | 87.16 128 x 139 x 94.0 | ||
| 2010 Aug 30 | Reentered over Barents Sea | ||
Payload:
- GLAS Geoscience Laser altimeter System, GSFC
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