Explorer 47
Explorer 47 (IMP-H or IMP-7), was a NASA satellite launched as part of Explorer program. Explorer 47 was launched on 23 September 1972 from Cape Canaveral, Florida, with a Thor-Delta 1604. Explorer 47 was the ninth overall launch of the Interplanetary Monitoring Platform series, but received the launch designation "IMP-7" because two previous "Anchored IMP" flights had used "AIMP" instead.
Explorer 47 satellite | |
| Names | IMP-H IMP-7 Interplanetary Monitoring Platform-7 |
|---|---|
| Mission type | Space physics |
| Operator | NASA |
| COSPAR ID | 1972-073A |
| SATCAT no. | 06197 |
| Mission duration | 6 years (achieved) |
| Spacecraft properties | |
| Spacecraft | Explorer XLVII |
| Spacecraft type | Interplanetary Monitoring Platform |
| Bus | IMP |
| Manufacturer | Goddard Space Flight Center |
| Launch mass | 390 kg (860 lb) |
| Dimensions | 157 cm (62 in) in height and 135 cm (53 in) in diameter |
| Power | Solar cells and batteries |
| Start of mission | |
| Launch date | 23 September 1972, 01:20:00 UTC |
| Rocket | Thor-Delta 1604 (Thor 579 / Delta 090) |
| Launch site | Cape Canaveral, LC-17B |
| Contractor | Douglas Aircraft Company |
| Entered service | 23 September 1972 |
| End of mission | |
| Deactivated | 31 October 1978 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | High Earth orbit |
| Perigee altitude | 201,599 km (125,268 mi) |
| Apogee altitude | 235,699 km (146,457 mi) |
| Inclination | 17.20° |
| Period | 17702.00 minutes |
| Instruments | |
| Charged Particle Measurements Experiment (CPME) Electrons and Hydrogen and Helium Isotopes Energetic Electrons and Protons Ions and Electrons in the Energy Range 0.1 to 2 MeV Magnetic Fields Experiment Measurement of Low-Energy Protons and Electrons Plasma Wave Solar and Cosmic-Ray Particles Solar Flare High-z/Low-e and Low-e Isotope Solar Plasma Electrostatic Analyzer Solar Plasma Faraday Cup Solar Wind Ion Composition Study of Cosmic-Ray, Solar and Magnetospheric Electrons | |
Explorer program | |
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