2003-004A
The Solar Radiation and Climate Experiment (SORCE) is a Pegasus-class mission. Total irradiance and spectral irradiance for climate studies, Earth Science program. Combined earlier TSIM and SOLSTICE/SAVE missions. Launch by Pegasus from CCAS 2002 Dec 1. Built by OSC for LASP/Boulder; management by LASP and GSFC. Carries four instruments.
(SOLSTICE/SAVE was the Solar-Stellar Intercomparison Experiment/ Solar Atmospheric Variability Explorer. PI is Rottman, U Colorado-LASP. TSIM was the GSFC Total Solar Irradiance Mission, an ACRIM followon.)
OSC Leostar-2 bus. 1.57m high, 1.16m dia prism with 6 panels; 4m span? 290 kg mass. 645 x 645 km x 40 deg. Control from LASP MOC, Boulder.
Drop at 78.5W 29.0N according to cosmoworld.ru and AWST030825-56.
SORCE was still operating in 2015; the TIM was supplemented by STPSAT-3's TCTE instrument, but the SIM would not have a replacement until the ISS TSIS instrument comes on line, planned for 2017.
| SORCE | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2003 Jan 25 | 1917:00 | L-1011 takeoff | CC Skid Strip |
| 2003 Jan 25 | 2013:35 | Launch by Pegasus XL | |
| T+0:05 St 1 burn | |||
| T+1:16 St 1 out | |||
| T+1:31 St 1 sep | |||
| T+1:32 St 2 burn | |||
| T+2:07 Fairing sep | |||
| T+2:45 St 2 out | |||
| T+7:27 St 2 sep | |||
| 2021:13 | T+7:38 St 3 burn | ||
| 2022:21 | T+8:46 St 3 MECO | ||
| 2024:21 | T+10:46 St 3 sep | ||
| 2003 Feb 1 | 97.31 610 x 649 x 40.0 | ||
| 2003 Feb 16 | 97.31 611 x 648 x 40.0 | ||
Payload:
- TIM Total Irradiance Monitor , 100 ppm, 10 ppm/yr
- SIM Spectral Irradiance Monitor 2000A-2mu, res 2-30A, acc. 100ppm/5 yr
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