 | |
| Names | SolarMax SMM |
|---|---|
| Mission type | Heliophysics |
| Operator | NASA |
| COSPAR ID | 1980-014A |
| SATCAT no. | 11703 |
| Website | hao.ucar.edu |
| Mission duration | 9 years, 9 months, 18 days |
| Spacecraft properties | |
| Bus | Multimission Modular Spacecraft |
| Manufacturer | Fairchild Industries |
| Launch mass | 2,315 kg (5,104 lb) |
| Dimensions | 4 × 2.3 m (13.1 × 7.5 ft) |
| Start of mission | |
| Launch date | 14 February 1980, 15:57:00 UTC |
| Rocket | Delta 3910 D-151 |
| Launch site | Cape Canaveral LC-17A |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 2 December 1989 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Eccentricity | 0.00029 |
| Perigee altitude | 508.0 km (315.7 mi) |
| Apogee altitude | 512.0 km (318.1 mi) |
| Inclination | 28.5 degrees |
| Period | 94.80 minutes |
| Mean motion | 15.19 |
| Epoch | 14 February 1980, 15:57:00 UTC |
The Solar Maximum Mission satellite (or SolarMax) was designed to investigate Solar phenomena, particularly solar flares. It was launched on February 14, 1980. The SMM was the first satellite based on the Multimission Modular Spacecraft bus manufactured by Fairchild Industries, a platform which was later used for Landsat 4 and Landsat 5[1] as well as the Upper Atmosphere Research Satellite.
After an attitude control failure in November 1980 it was put in standby mode until April 1984 when it was repaired by a Shuttle mission.
The Solar Maximum Mission ended on December 2, 1989, when the spacecraft re-entered the atmosphere and burned up over the Indian Ocean.[2]