Heat Capacity Mapping Mission
HCMM (Explorer 58) | |
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Type: | Research satellite |
Country: | United States |
Operator: | NASA |
COSPAR-ID : | 1978-041A |
Mission dates | |
Dimensions: | 134 kg |
Size: | 0.93 m high, 1.02 m diameter |
Begin: | April 26, 1978, 10:02 UTC |
Starting place: | Vandenberg Air Force Base , SLC-5 |
Launcher: | Scout-D1 |
Status: | burned up on December 22, 1981 |
Orbit data | |
Rotation time : | 134 min |
Orbit inclination : | 97.6 ° |
Apogee height : | 646 km |
Perigee height : | 558 km |
The Heat Capacity Mapping Mission (HCMM) , or Explorer 58, was a NASA research satellite for thermal mapping of the earth. The satellite was launched on April 26, 1978 from Vandenberg with a Scout D1 rocket. After launch, HCMM entered a sun-synchronous low orbit. It was spin stabilized at 14 revolutions per minute.
HCMM was 1.7 m high, 1.25 m in diameter and consisted of two main modules, the satellite bus and the instrument carrier . Since there was no way to save data on board, data was only transmitted in real time when the satellite came in range from one of the seven ground stations. HCMM transmitted data to Earth by September 30, 1980 and burned up on December 22, 1981.
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- HCMM in the NSSDCA Master Catalog (English)
Web links
- HCMM on Gunters Space Page (English)