ISEE-1
The ISEE-1 (International Sun-Earth Explorer-A or ISEE-A) was an Explorer-class mother spacecraft, International Sun-Earth Explorer-1, was part of the mother/daughter/heliocentric mission (ISEE-1, ISEE-2, ISEE-3). ISEE-1 was a 340.2 kg (750 lb) space probe used to study magnetic fields near the Earth. ISEE-1 was a spin-stabilized spacecraft and based on the design of the prior IMP (Interplanetary Monitoring Platform) series of spacecraft. ISEE-1 and ISEE-2 were launched on 22 October 1977, and they re-entered on 26 September 1987.
ISEE-1 satellite | |
| Names | ISEE-A International Sun-Earth Explorer-A Explorer 56 IMP-K |
|---|---|
| Mission type | Space physics |
| Operator | NASA |
| COSPAR ID | 1977-102A |
| SATCAT no. | 10422 |
| Mission duration | 10 years (achieved) |
| Spacecraft properties | |
| Spacecraft | Explorer LVI |
| Spacecraft type | International Sun-Earth Explorer |
| Bus | IMP (Interplanetary Monitoring Platform) |
| Manufacturer | Goddard Space Flight Center |
| Launch mass | 340.2 kg (750 lb) |
| Dimensions | Cylinder at 16 sided of 1.73 m (5 ft 8 in) of diameter and of 1.61 m (5 ft 3 in) in height |
| Power | 175 watts |
| Start of mission | |
| Launch date | 22 October 1977, 13:53:00 UTC |
| Rocket | Thor-Delta 2914 (Thor 623 / Delta 135) |
| Launch site | Cape Canaveral, LC-17B |
| Contractor | Douglas Aircraft Company |
| Entered service | 22 October 1977 |
| End of mission | |
| Last contact | 26 September 1987 |
| Decay date | 26 September 1987 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | High Earth orbit |
| Perigee altitude | 1.04 Re (6,600 km (4,100 mi)) |
| Apogee altitude | 23.00 Re (137,806 km (85,629 mi)) |
| Inclination | 28.76° |
| Period | 3556.80 minutes |
| Instruments | |
| DC and low frequency electric fields, double-probe (0.19-1900 Hz) Electron and Proton Fluxes in the Outer Magnetosphere (1.5-300 keV) Energetic Ion Mass Spectrometer (0-17 keV/q; 1 AMU to > 150 AMU) Fast Plasma Experiment (FPE) and Solar Wind Ion Experiment (SWE) Gamma-Ray Bursts (Time History) Low Energy Cosmic Ray Experiment Low-Energy Proton and Electron Differential Energy Analyzer (LEPEDEA) Medium Energy Particles Experiment (METE) Plasma (Total Electron) Density by Radio Techniques Plasma waves: electric and magnetic fields spectra, flux, direction (5.62 Hz-31.1 khz) Quasi-static and low-frequency electric fields (0.1-200 mV/m, frequency < 1000Hz) Tri-axial Fluxgate Magnetometer Vector Electron Spectrometer Experiment Very low frequency (1-32 kHz) Wave-Particle Interactions in the Magnetosphere | |
International Sun-Earth Explorer | |
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