NASA'sExplorer Missions |
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National Space Science Data Center NASA Goddard Space Flight Center Greenbelt, MD 20771, USA |
Over the years, NASA has launched a series of "Explorer" spacecraft carrying a wide variety of scientific investigations. The list below identifies the 74 successful and 4 unsuccessful missions as of this writing (March 2000). The list identifies the international ID for each spacecraft, its common name (different than "Explorer N" for most), its launch date, and a list of experiments and associated Principal Investigators associated with each. As of this writing, Explorers 50 (IMP 8), 67-74 and 77-78 (EUVE, SAMPEX, RXTE, FAST, ACE, SNOE, TRACE, SWAS, FUSE, and IMAGE) are still operating.
NASA's Explorer spacecraft series is not simply the longest running series of spacecraft, it has produced highly-durable (i.e., well-engineered) spacecraft as well. The diagram (current as of Feb. 1998) illustrates this point very clearly. Of the 73 successful Explorer missions depicted, fully five of them had had missions which lasted 10 or more years, the longest of which (IMP 8) has been operational for over 26 years now and still produces valuable information about the solar wind. NASA's IUE spacecraft operated for 19 years and produced copious amounts of data for the astronomical community. The ISEE 3/ICE spacecraft operated for 14 years. As of March of 2000, of the ten operational Explorer missions, SNOE and TRACE have operated for about two year, ACE two and a half years, FAST for about three and a half, RXTE for over four, EUVE and SAMPEX for nearly eight, and IMP 8 for more than 26. SWAS has been operational for slightly more than one year, having been launched in early December 1998. The latest two additions are FUSE (June 1999) and IMAGE (March 2000).
Satellite Name NSSDC ID Identification Contact Explorer 1 58-001A Explorer 1 02/01/58 US 58-001A-01 Expl 1, Energetic Particles Exp Van Allen 58-001A-02 Explorer 1, Micrometeorite Manring 58-001A-03 Explorer 1, Atmos Drag Density Jacchia Explorer 2 EXPLR2 Explorer 2, Failed 03/05/58 US Explorer 3 58-003A Explorer 3 03/26/58 US 58-003A-01 Expl 3, Cosmic Ray Van Allen 58-003A-02 Explorer 3, Micrometeorite Manring Explorer 4 58-005A Explorer 4,1958 Epsilon, 07/26/58 US 58-005A-01 Explorer 4,Charged Particle Det Van Allen Explorer 5 EXPLR5 Explorer 5, Failed 08/24/58 ARPA Explorer 6 59-004A Explorer 6 08/07/59 USAF-NASA 59-004A-01 Expl 6,Triple Coinc Prop Counter Simpson 59-004A-02 Expl 6,Scintillation Counter Sonett 59-004A-03 Expl 6,Ion Ch+GM(E/1.55, 2.86,P) Winckler 59-004A-04 Expl 6,Search Coil Magnetometer Sonett 59-004A-05 Expl 6,Television Baker 59-004A-06 Expl 6,Micrometeorites Dubin 59-004A-07 Expl 6,VLF Receiver Helliwell 59-004A-08 Expl 6,Fluxgate Magnetometer Coleman 59-004A-09 Expl 6,Beacon(108+378MHZ) Graves Explorer 7 59-009A Explorer 7 10/13/59 NASA 59-009A-01 Explorer 7,Thermal Radiation Suomi 59-009A-02 Explorer 7,Solar Radiation Friedman 59-009A-03 Explorer 7,Heavy Prim Cosmic Ray Pomerantz 59-009A-04 Explorer 7,Radiation + Sol Proton Van Allen 59-009A-05 Explorer 7,Micrometeorite Lagow 59-009A-06 Explorer 7,RF Beacon (Zone) Swenson Explorer 8 60-014A Explorer 8 11/03/60 NASA-GSFC 60-014A-01 Explorer 8,RF Impedance Kane 60-014A-02 Explorer 8,Ion Traps Bourdeau 60-014A-03 Explorer 8,Langmuir Probe Berg 60-014A-04 Explorer 8,Micrometeorites Berg 60-014A-05 Explorer 8,Micrometeorite McCracken 60-014A-06 Explorer 8,Electric Field Meter Donley 60-014A-07 Explorer 8,Atmos Drag Density Jacchia Explorer 9 61-004A Explorer 9,Balloon 02/16/61 NASA-LARC 61-004A-01 Explorer 9,Atmospheric Drag Osullivan Explorer 10 61-010A P 14 03/25/61 NASA-GSFC 61-010A-01 P 14,RB-Vap+Flux-G Magnetometers Heppner 61-010A-02 P 14,Faraday Cup Plasma Probe Bridge 61-010A-03 P 14,Sun-Moon-Earth Aspect Sensor Albus Explorer 11 61-013A S 15 04/27/61 NASA-GSFC 61-013A-01 S 15,Gamma Ray Telescope Kraushaar 61-013A-02 S 15,Charged Particle Garmire Explorer 12 61-020A EPE-A 08/16/61 NASA-GSFC 61-020A-01 EPE-A,Electrostatic Analyzer Bader 61-020A-02 EPE-A,3-Axis Flux Magnetometer Cahill 61-020A-03 EPE-A,Charged Particle Experiment Van Allen 61-020A-04 EPE-A,CR Scint + Dbl Scint Tele McDonald 61-020A-05 EPE-A,0.1-10MeV Prot+Elec Scint Davis 61-020A-06 EPE-A,Solar Cell Damage Longanekr Explorer 13 61-022A S 55A 08/25/61 NASA-LARC 61-022A-01 S 55A,Pressurized Cell Gurtler 61-022A-02 S 55A,Copper Wire Card Secretan 61-022A-03 S 55A,Cadmium Sulfide Cell Secretan 61-022A-04 S 55A,Impact Detection Beswick 61-022A-05 S 55A,Grid Detectors Explorer 14 62-051A EPE-B 10/02/62 NASA-GSFC 62-051A-01 EPE-B,Electrostatic Analyzer Wolfe 62-051A-02 EPE-B,Fluxgate Magnetometer Cahill 62-051A-03 EPE-B,Trapped Particles Van Allen 62-051A-04 EPE-B,C.R.Scint+DBL Scint Tele McDonald 62-051A-05 EPE-B,0.1-10 MeV Prtn Elect Scint Davis 62-051A-06 EPE-B,Solar Aspect Sensor Albus 62-051A-07 EPE-B,Electrolytic Timer Exp. Libby 62-051A-08 EPE-B,Solar Cell Damage Exp. Longanekr Explorer 15 62-059A EPE-C 10/27/62 NASA-GSFC 62-059A-01 EPE-C,Electron Energy Distr Brown 62-059A-02 EPE-C,Omni+Dir(E/5,.5 P 40-110) McIlwain 62-059A-03 EPE-C,Angular Distribution Brown 62-059A-04 EPE-C,Comb. With 62-059A-02 McIlwain 62-059A-05 EPE-C,0.1-10MeV Prot+Elect Scint Davis 62-059A-06 EPE-C,Fluxgate Magnetometer Cahill Explorer 16 62-070A S 55B 12/16/62 NASA-LARC 62-070A-01 S 55B,Pressurized Cells Gurtler 62-070A-02 S 55B,Grid Detectors Davison 62-070A-03 S 55B,Copper Wire Card Secretan 62-070A-04 S 55B,Micrometeorite Beswick 62-070A-05 S 55B,Cadium Sulphide Cell Secretan Explorer 17 63-009A AE-A 04/03/63 NASA-GSFC 63-009A-01 AE-A,Mass Spectrometer Reber 63-009A-02 AE-A,Electrostatic Probes Brace 63-009A-03 AE-A,Pressure Gauge Newton Explorer 18 63-046A IMP-A 11/27/63 NASA-GSFC 63-046A-01 IMP-A,Retard Potent Anal, E+P Serbu 63-046A-02 IMP-A,Fluxgate Magnetometer Ness 63-046A-03 IMP-A,C.R. Protons(R vs DE/DX) Simpson 63-046A-04 IMP-A,Cosmic Rays (E vs DE/DX) McDonald 63-046A-05 IMP-A,Energetic Particle Exp Anderson 63-046A-06 IMP-A,Electrostatic Analyzer Wolfe 63-046A-07 IMP-A,Faraday Cup Bridge Explorer 19 63-053A AD-A 12/19/63 NASA-LARC 63-053A-01 AD-A,Nonsyst Changes Air Density Jacchia 63-053A-02 AD-A,Systematic Changes Air Den. Keating Explorer 20 64-051A IE-A 08/25/64 NASA-NBS 64-051A-01 IE-A,Fixed Freq Ionosonde Knecht 64-051A-02 IE-A,Ion Probe Boyd 64-051A-03 IE-A,Cosmic Noise Stone Explorer 21 64-060A IMP-B 10/04/64 NASA-GSFC 64-060A-01 IMP-B,Retard Potent Anal, E + P Serbu 64-060A-02 IMP-B,Fluxgate Magnetometer Ness 64-060A-03 IMP-B,C.R. Protons (R vs DE/DX) Simpson 64-060A-04 IMP-B,Cosmic Rays (E vs DE/DX) McDonald 64-060A-05 IMP-B,Total Ionization Experiment Anderson 64-060A-06 IMP-B,Electrostatic Analyzer Wolfe 64-060A-07 IMP-B,Faraday Cup Bridge Explorer 22 64-064A BE-B 10/10/64 NASA-APL 64-064A-01 BE-B,RF Beacon Blumle 64-064A-02 BE-B,Langmuir Probe Brace 64-064A-03 BE-B,Laser Reflector Plotkin 64-064A-04 BE-B,US Navy Doppler Anderle Explorer 23 64-074A S 55C 11/06/64 NASA-LARC 64-074A-01 S 55C,Pressurized Cells Gurtler 64-074A-02 S 55C,Impact Detectors Holden 64-074A-03 S 55C,Cadium Sulfide Cells Secretan 64-074A-04 S 55C,Capacity Detectors Siviter Explorer 24 64-076A AD-B 11/21/64 NASA-LARC 64-076A-01 AD-B,Nonsyst Changes Air Density Jacchia 64-076A-02 AD-B,Systematic Changes Air Den. Keating Explorer 25 64-076B Injun 4 11/21/64 SUI-GSFC 64-076B-01 Injun 4, See 64-076B Van Allen 64-076B-02 Injun 4,Retarding Potential Anal Sagalyn 64-076B-03 Injun 4,GM Detectors (7) Van Allen 64-076B-04 Injun 4,P-N Junction Detector Van Allen 64-076B-05 Injun 4,CDS Detector Van Allen 64-076B-06 Injun 4,Plastic Scintillators Van Allen 64-076B-07 Injun 4, Deleted Mag-JJB See Rmk Van Allen Explorer 26 64-086A EPE-D 12/21/64 NASA-GSFC 64-086A-01 EPE-D,Charged Particle Brown 64-086A-02 EPE-D,Electron Proton McIlwain 64-086A-03 EPE-D,Magnetic Field Cahill 64-086A-04 EPE-D,0.1-10MeV Prot+Elec Scint Davis 64-086A-05 EPE-D,Solar Cell Damage Slifer Explorer 27 65-032A BE-C 04/29/65 NASA-APL 65-032A-01 BE-C,RF Beacon Blumle 65-032A-02 BE-C,Langmuir Probe Brace 65-032A-03 BE-C,Laser Reflector Berbert 65-032A-04 BE-C,Navy Doppler Anderle Explorer 28 65-042A IMP-C 05/29/65 NASA-GSFC 65-042A-01 IMP-C,Retard Potent Anal,E + P Serbu 65-042A-02 IMP-C,Magnetometers Ness 65-042A-03 IMP-C,C.R. Protons (R vs DE/DX) Simpson 65-042A-04 IMP-C,Cosmic Rays (E vs DE/DX) McDonald 65-042A-05 IMP-C,Total Ionization Exp Anderson 65-042A-06 IMP-C,Electrostatic Analyzer Wolfe 65-042A-07 IMP-C,Faraday Cup Bridge Explorer 29 65-089A GEOS 1 11/06/65 NASA-OSSA 65-089A-01 GEOS 1,Optical Beacon System Williston 65-089A-02 GEOS 1,Laser Corner Reflector Plotkin 65-089A-03 GEOS 1,Doppler System Anderle 65-089A-04 GEOS 1,SECOR (US Army) McCall 65-089A-05 GEOS 1,NASA Range and Rate Berbert 65-089A-06 GEOS 1,NASA Minitrack Kohout Explorer 30 65-093A SOLRAD 8 11/19/65 NASA-NRL 65-093A-01 SOLRAD 8,Solar Radiation Kreplin Explorer 31 65-098B DME-A 11/29/65 NASA-APL 65-098B-01 DME-A,Thermal Ion Probe Maier 65-098B-02 DME-A,Cyl. Electrostatic Probes Brace 65-098B-03 DME-A,Electron Temperature Probe Willmore 65-098B-04 DME-A,Spherical Ion Mass Spectrom Willmore 65-098B-05 DME-A,Magnetic Ion Mass Spect Hoffman 65-098B-06 DME-A,Thermal Electron Probe Maier 65-098B-07 DME-A,Energetic Electron Curr Mon Maier Explorer 32 66-044A AE-B 05/25/66 NASA-GSFC 66-044A-01 AE-B,RF Ion Mass Brinton 66-044A-02 AE-B,Neutral Mag Mass Spect Reber 66-044A-03 AE-B,Atmospheric Drag Jacchia 66-044A-04 AE-B,Redhead Ioniz Gauges Newton 66-044A-05 AE-B,Elect Temp and Density Brace Explorer 33 66-058A IMP-D 07/01/66 NASA-GSFC 66-058A-01 IMP-D,Magnetometer Ness 66-058A-02 IMP-D,Retard Potent Anal, E+P Serbu 66-058A-03 IMP-D,3 Axis Fluxgate Magnetomtr Sonett 66-058A-04 IMP-D,Ion Chamber+Geiger Counter Anderson 66-058A-05 IMP-D,GM Cntr+Solid State Detect Van Allen 66-058A-06 IMP-D,Faraday Cup Bridge 66-058A-07 IMP-D,Solar Cell Damage Slifer Explorer 34 67-051A IMP-F 05/24/67 NASA-GSFC 67-051A-01 IMP-F,Low Energy Telescope Brown 67-051A-02 IMP-F,Ion Chamber Anderson 67-051A-03 IMP-F,C.R. Proton (R vs DE/DX) Simpson 67-051A-04 IMP-F,LEPEDEA,Low Energy Particle Van Allen 67-051A-05 IMP-F,Cosmic Ray Anisotropy McCracken 67-051A-06 IMP-F,Electrostatic Analyzer Harrison 67-051A-07 IMP-F,Solar Proton Monitor Bostrom 67-051A-08 IMP-F,Elect Analyzer + V Select Ogilvie 67-051A-09 IMP-F,Low Energy Proton+Alpha Det McDonald 67-051A-10 IMP-F,Cosmic Rays (E vs DE/DX) McDonald 67-051A-11 IMP-F,Magnetic Field Experiment Ness Explorer 35 67-070A IMP-E 07/19/67 NASA-GSFC 67-070A-01 IMP-E,GM Cntr + Solid State Det Van Allen 67-070A-02 IMP-E,Energetic Particle Flux Anderson 67-070A-03 IMP-E,3Axis Fluxgate Magnetometer Sonett 67-070A-04 IMP-E,Magnetometer Ness 67-070A-05 IMP-E,Micrometeorites Alexander 67-070A-06 IMP-E,Faraday Cup Bridge 67-070A-07 IMP-E,Retard Potential Anal, E+P Serbu 67-070A-08 IMP-E,Cislunar RF Beacon Peterson 67-070A-09 IMP-E,Selenodetic Studies Kaula 67-070A-10 IMP-E,Solar Cell Damage Slifer Explorer 36 68-002A GEOS 2 01/11/68 NASA-APL 68-002A-01 GEOS 2,Optical Beacon System Williston 68-002A-02 GEOS 2,Laser Corner Reflector Plotkin 68-002A-03 GEOS 2,Navy Doppler System Anderle 68-002A-04 GEOS 2,US Army SECOR System McCall 68-002A-05 GEOS 2,Goddard RANDRR System Berbert 68-002A-06 GEOS 2,C-Band Radar System Stanley 68-002A-07 GEOS 2,NASA Minitrack Network Kohout 68-002A-08 GEOS 2,Precipitating Electrons Bostrom 68-002A-09 GEOS 2,Magnetometer Armstrong Explorer 37 68-017A SOLRAD 9 03/05/68 USN 68-017A-01 SOLRAD 9,Solar Radiation Kreplin Explorer 38 68-055A RAE-A 07/04/68 NASA-GSFC 68-055A-01 RAE-A,Radio Astronomy 9 Freq. V Stone 68-055A-02 RAE-A,Radio Bursts Receivers Stone 68-055A-03 RAE-A,Capacitance Probe Stone 68-055A-04 RAE-A,Impedance Probe Stone 68-055A-05 RAE-A,Electron Density Stone Explorer 39 68-066A AD-C 08/08/68 NASA-LARC 68-066A-01 AD-C,Nonsyst Changes Air Density Jacchia 68-066A-02 AD-C,Systematic Changes Air Den. Keating Explorer 40 68-066B Injun 5 08/08/68 SUI 68-066B-01 INJUN 5,L Engr Pr+El Diff En Anal Frank 68-066B-02 INJUN 5,VLF Receiver,30cps-16kc Gurnett 68-066B-03 INJUN 5,S.S. Det.(Proton,Elect) Van Allen 68-066B-04 INJUN 5,Spherical Ret. Pot. Anal. Sagalyn 68-066B-05 INJUN 5,Delet by JJB,See Remarks 68-066B-06 INJUN 5,Delet by JJB, See Remarks Explorer 41 69-053A IMP-G 06/21/69 NASA-GSFC 69-053A-01 IMP-G,Low Energy Telescope Brown 69-053A-02 IMP-G,Ion Chamber Anderson 69-053A-03 IMP-G,Cos Ray Protons(R vs DE/DX) Simpson 69-053A-04 IMP-G,LEPEDEA,Low Ener Prot+Elect Frank 69-053A-05 IMP-G,Cosmic Ray Aniotropy McCracken 69-053A-06 IMP-G,Elect Anal (Rpl by 12+13) Harrison 69-053A-07 IMP-G,Solar Proton Monitor Bostrom 69-053A-08 IMP-G,Electrostatic Plasma Analy Ogilvie 69-053A-09 IMP-G,Low Energy Proton+Alpha Det McDonald 69-053A-10 IMP-G,Cosmic Rays (E vs DE/DX) McDonald 69-053A-11 IMP-G,Magnetic Field Experiment Ness 69-053A-12 IMP-G,Channeltron Particle Detect Anderson 69-053A-13 IMP-G,Second LEPEDEA Frank Explorer 42 70-107A Uhuru 12/12/70 NASA-GSFC 70-107A-01 SAS-A,X-Ray All-Sky Survey Giacconi Explorer 43 71-019A IMP-I 03/13/71 NASA-GSFC 71-019A-01 IMP-I,Three Axis Magnetometer Ness 71-019A-02 IMP-I,DC Electric Fields Aggson 71-019A-03 IMP-I,Iowa AC Elect+Mag Fields Gurnett 71-019A-04 IMP-I,Solar Plasma Elect Analyzer Ogilvie 71-019A-05 IMP-I,Elect + Proton,25eV-50KeV Frank 71-019A-06 IMP-I,GM Detector Proton+Electron Anderson 71-019A-07 IMP-I,Solar Proton Monitor Bostrom 71-019A-08 IMP-I,Cosmic Rays (E vs DE/DX) McDonald 71-019A-09 IMP-I,Cosmic Rays Nuclear Comp Simpson 71-019A-10 IMP-I,Solar Elect Scintillator Cline 71-019A-11 IMP-I,Plasma Bame 71-019A-12 IMP-I,Minn AC Elec + Mag Fields Kellog 71-019A-13 IMP-I,Michigan Radio Astronomy Haddock 71-019A-14 IMP-I,Deleted by CDW 71-019A-15 IMP-I,UMD/GSFC Radio Astronomy Erickson 71-019A-16 IMP-I,GSFC AC Electric Fields Aggson 71-019A-17 IMP-I,Project AC E+B Fields Gurnett 71-019A-18 IMP-I,Project Radio Astronomy Erickson Explorer 44 71-058A SOLRAD 10 07/08/71 USN-NASA 71-058A-01 SOLRAD 10,Solar X-Ray UV Detect Kreplin 71-058A-02 SOLRAD 10,Stellar X-Ray Telescope Kreplin Explorer 45 71-096A S-Cubed A 11/15/71 NASA-GSFC 71-096A-01 S-Cubed A,0.8-25KeV Ele+Prt Anal Hoffman 71-096A-02 S-Cubed A,25-872 KeV Prot+Alp Det Fritz 71-096A-03 S-Cubed A,35-400KeV Elect-SS Det Williams 71-096A-04 S-Cubed A,Fluxgate Magnetometers Cahill 71-096A-05 S-Cubed A,Search Coil Magnetom Cahill 71-096A-06 S-Cubed A,DC Electric Field Meas Maynard 71-096A-07 S-Cubed A,AC Electric Field Meas Gurnett Explorer 46 72-061A Meteoroid Technology Sat 08/13/72 NASA-LARC 72-061A-01 Meteo.Tech.Sat.,Bumper Panels Humes 72-061A-02 Meteo.Tech.Sat.,Meteoroid Veloc Alvarez 72-061A-03 Meteo.Tech.Sat.,Impact Flux Alvarez Explorer 47 72-073A IMP-H 09/23/72 NASA-GSFC 72-073A-01 IMP-H,Tri-Axis Magnetometer Ness 72-073A-02 IMP-H,Solar Plasma, Faraday Cup Bridge 72-073A-03 IMP-H,Solar Ions+Electron,100KeV Gloeckler 72-073A-04 IMP-H,LEPEDEA 25eV - 50KeV Frank 72-073A-05 IMP-H,Elect+Proton Tele gr 50KeV Williams 72-073A-06 IMP-H,Electrons+H+He Sld Stone 72-073A-07 IMP-H,Cosmic Ray Nclr Comp Simpson 72-073A-08 IMP-H,Particle Telescope+GM Tubes Krimigis 72-073A-09 IMP-H,Cosmic Rays(E vs DE/DX) McDonald 72-073A-10 IMP-H,Plasma Electro Analyzer Bame 72-073A-11 IMP-H,Plasma Wave Experiment Scarf 72-073A-12 IMP-H,Ion Composition Ogilvie 72-073A-13 IMP-H,Solar Electrons Cline Explorer 48 72-091A SAS-B 11/15/72 NASA-GSFC 72-091A-01 SAS-B,Hi-Energy Gamma-Ray Tele Fichtel Explorer 49 73-039A RAE-B 06/10/73 NASA-GSFC 73-039A-01 RAE-B,Radio Ast 9 Freq V Ant Stone 73-039A-02 RAE-B,Radio Burst Receiver Stone 73-039A-03 RAE-B,Impedance Probe Stone Explorer 50 73-078A IMP-J 10/26/73 NASA-GSFC 73-078A-01 IMP-J,Tri-Axis Magnetometer Lepping 73-078A-02 IMP-J,Solar Plasma, Faraday Cup Lazarus 73-078A-03 IMP-J,Solar Ions+Electrons,100KeV Gloeckler 73-078A-04 IMP-J,Elect + Proton,25eV-50KeV Frank 73-078A-05 IMP-J,Elect + Proton, Tele Gr Williams 73-078A-06 IMP-J,Elec+H+He Solid St Tele Stone 73-078A-07 IMP-J,Cosmic Ray Nuclear Comp Simpson 73-078A-08 IMP-J,Particle Tele + GM Tubes Krimigis 73-078A-09 IMP-J,Cosmic Rays(E vs DE/DX) McDonald 73-078A-10 IMP-J,Plasma,Electro. Analyzer Bame 73-078A-11 IMP-J,DC Electric Fields Aggson 73-078A-12 IMP-J,AC Electric,Magnetic Fields Gurnett Explorer 51 73-101A AE-C 12/16/73 NASA-GSFC 73-101A-01 AE-C,Cyl Electrostatic Probe(CEP) Brace 73-101A-02 AE-C,Tri-Axis Acc Sys (MESA) Champion 73-101A-03 AE-C,Photoelect. Sectrom (PES) Doering 73-101A-04 AE-C,Retard Potent Analyzer (RPA) Hanson 73-101A-05 AE-C,Extreme Sol UV Monitor(ESUM) Heath 73-101A-06 AE-C,Solar EUV Spectrometer(EUVS) Hinteregg 73-101A-07 AE-C,Open Source Spectrom (OSS) Nier 73-101A-08 AE-C,Neutral Atmos Comp Exp(NACE) Pelz 73-101A-09 AE-C,Neutral Atmos Temp Exp(NATE) Spencer 73-101A-10 AE-C,Mag Ion Mass Spectrom(MIMS) Hoffman 73-101A-11 AE-C,Bennett Ion Mass Spect(BIMS) Brinton 73-101A-12 AE-C,Low Energy Elect Exp (LEE) Hoffman 73-101A-13 AE-C,UV Nitric Oxide Exper (UVNO) Barth 73-101A-14 AE-C,Visible Airglow Exp (VAE) Hays 73-101A-15 AE-C,Cold Cathode Pres Gauge(PSB) Rice 73-101A-16 AE-C,Capac. Pressure Gauge (PSA) Rice 73-101A-17 AE-C,Magnetometer (MAG) Zmuda 73-101A-18 AE-C,Temperature Alarm (TAL) Caruso Explorer 52 74-040A Hawkeye 1 06/03/74 NASA-LARC 74-040A-01 Hawkeye,Magnetometer Van Allen 74-040A-02 Hawkeye,LEPEDEA Frank 74-040A-03 Hawkeye,ELF-VLF Gurnett Explorer 53 75-037A SAS-C 05/07/75 NASA-GSFC 75-037A-01 SAS-C,Extragalactic 1.5-10KeV Clark 75-037A-02 SAS-C,Scorpio Monitor 0.4-80KeV Clark 75-037A-03 SAS-C,Galactic Abs. 0.2-10KeV Clark 75-037A-04 SAS-C,Galactic Monitor 1.8-8KeV Clark Explorer 54 75-096A AE-D 10/06/75 NASA-GSFC 75-096A-01 AE-D,Cyl Electrost Probe (CEP) Brace 75-096A-02 AE-D,Tri-Ax Acc System (MESA) Champion 75-096A-03 AE-D,Photoelect Spect (PES) Doering 75-096A-04 AE-D,Retard Potent Analyzer(RPA) Hanson 75-096A-06 AE-D,Solar EUV Spect (EUVS) Hinteregg 75-096A-07 AE-D,Open Source Spect (OSS) Nier 75-096A-08 AE-D,Neut Atmos Comp Exp (NACE) Hedin 75-096A-09 AE-D,Neut Atmos Temp Exp (NATE) Spencer 75-096A-10 AE-D,Mag Ion Mass Spect (MIMS) Hoffman 75-096A-11 AE-D,UV Nitric Oxide Exp(UVNO) Barth 75-096A-12 AE-D,Low Energy Electron Exp(LEE) Hoffman 75-096A-13 AE-D,Visible Airglow Exp (VAE) Hays 75-096A-14 AE-D,Capacitance Press Gauge(PSA) Rice 75-096A-15 AE-D,Cold Cath Press Gauge (PSB) Rice 75-096A-17 AE-D,Reflected Gas (MRMU) Scialdone 75-096A-18 AE-D,Plan Atmos Comp Test(PACT) Niemann Explorer 55 75-107A AE-E 11/20/75 NASA-GSFC 75-107A-01 AE-E,CEP-Cyl Electrostatic Probe Brace 75-107A-02 AE-E,Tri-Axial Acc Sys (MESA) Champion 75-107A-03 AE-E,PES-Photoelect Spectrometer Doering 75-107A-04 AE-E,RPA-Retarding Potent Anal Hanson 75-107A-05 AE-E,Extrm Solar UV Monit(ESUM) Heath 75-107A-06 AE-E,Solar EUV Spect (EUVS) Hinteregg 75-107A-07 AE-E,Open Source Spectrom (OSS) Nier 75-107A-08 AE-E,Neut Atmos Comp Exp (NACE) Hedin 75-107A-09 AE-E,Neut Atmos Temp Exp (NATE) Spencer 75-107A-10 AE-E,Bennett Ion Mass Spec(BIMS) Brinton 75-107A-11 AE-E,Visible Airglow Exp (VAE) Hays 75-107A-12 AE-E,Capacitance Press Gauge(PSB) Rice 75-107A-13 AE-E,Cold Cath Press Gauge (PSA) Rice 75-107A-16 AE-E,Backscatter UV Spect (BUV) Heath 75-107A-17 AE-E,Temperature Alarm (TAL) Caruso 75-107A-18 AE-E,Radiation Damage Exp (CREM) Cliff 75-107A-19 AE-E,Ener Analyz Spec Test (EAST) Hoffman Explorer 56 77-102A ISEE 1 10/22/77 NASA-GSFC 77-102A-01 ISEE 1,Fast Plasma & Sol Wind Ion Bame 77-102A-02 ISEE 1,Fast Electrons Ogilvie 77-102A-03 ISEE 1,Hot Plasma Frank 77-102A-04 ISEE 1,Fluxgate Magnetometer Russell 77-102A-05 ISEE 1,Low Energy Cosmic Rays Gloeckler 77-102A-06 ISEE 1,Quasi-Static Electric Fld Cattell 77-102A-07 ISEE 1,Plasma Waves Gurnett 77-102A-08 ISEE 1,Plasma Density Harvey 77-102A-09 ISEE 1,Energetic Elect & Protons Williams 77-102A-10 ISEE 1,Electrons and Protons Anderson 77-102A-11 ISEE 1,DC Electric Fields-GSFC Heppner 77-102A-12 ISEE 1,Ion Composition Lennartss 77-102A-13 ISEE 1,VLF Wave Propagation Helliwell 77-102A-14 ISEE 1,Gamma-Ray Bursts Cline Explorer 57 78-012A IUE 01/26/78 NASA-ESA 78-012A-01 IUE,Ultraviolet Spectrograph NASA-GSFC 78-012A-02 IUE,Particle Flux Monitor Bostrom Explorer 58 78-041A HCMM 04/26/78 NASA-OA 78-041A-01 HCMM,Radiometer (HCMR) Barnes Explorer 59 78-079A ISEE 3 08/12/78 NASA-GSFC 78-079A-01 ISEE 3,Solar Wind Plasma Gosling 78-079A-02 ISEE 3,Magnetic Fields Smith 78-079A-03 ISEE 3,Low-Energy Cosmic Rays Gloeckler 78-079A-04 ISEE 3,Med Energy Cosmic Rays Von Rosen 78-079A-05 ISEE 3,Hi Energy Cosmic Rays Wiedenbec 78-079A-06 ISEE 3,Cosmic Ray Electrns,Nuclei Evenson 78-079A-07 ISEE 3,Plasma Waves Greenstad 78-079A-08 ISEE 3,Energetic Protons Hynds 78-079A-09 ISEE 3,Intplan & Solar Electrons Anderson 78-079A-10 ISEE 3,Radio Mapping Steinberg 78-079A-11 ISEE 3,Solar Wind Ion Composition Ogilvie 78-079A-12 ISEE 3,High-Energy Cosmic Rays Stone 78-079A-13 ISEE 3,Ground Based Solar Studies Wilcox 78-079A-14 ISEE 3,X- and Gamma-Ray Bursts Anderson 78-079A-15 ISEE 3,Gamma-Ray Bursts Teegarden Explorer 60 79-013A SAGE 02/18/79 NASA-OA 79-013A-01 SAGE,Strat Aero & Gas Exper McCormick Explorer 61 79-094A Magsat 10/30/79 NASA-GSFC 79-094A-01 Magsat,Scalar Magnetometer Langel 79-094A-02 Magsat,Vector Magnetometer Langel Explorer 62 81-070A Dynamics Explorer 1 08/03/81 NASA-GSFC 81-070A-01 DE 1,Magnetic Field Obs(MAG-A) Sugiura 81-070A-02 DE 1,Plasma Wave Instrument(PWI) Shawhan 81-070A-03 DE 1,Spin Scan Auror Imager(SAI) Frank 81-070A-04 DE 1,Retard Ion Mass Spec(RIMS) Chappell 81-070A-05 DE 1,Hi Alt Plasma Instrum(HAPI) Burch 81-070A-06 DE 1,Energet Ion Comp Spec(EICS) Shelley 81-070A-07 DE 1,Auroral Physics Investig Maggs 81-070A-08 DE 1,Cont&Nat Wave-Part Interact Helliwell Explorer 63 81-070B Dynamics Explorer 2 08/03/81 NASA-GSFC 81-070B-01 DE 2,Magnetic Field Obs(MAG-B) Sugiura 81-070B-02 DE 2,Vector E Field Instr(VEFI) Maynard 81-070B-03 DE 2,Neut Atmos Comp Spect(NACS) Carignan 81-070B-04 DE 2,Wind & Temp Spectrom(WATS) Spencer 81-070B-05 DE 2,Fabry-Perot Interfer(FPI) Hays 81-070B-06 DE 2,Ion Drift Meter (IDM) Heelis 81-070B-07 DE 2,Retarding Poten Analyz(RPA) Hanson 81-070B-08 DE 2,Low Alt Plasma Instr(LAPI) Winningha 81-070B-09 DE 2,Langmuir Probe Instr(LANG) Brace 81-070B-10 DE 2,Magnet Ener Coupling to Atm Nagy 81-070B-11 DE 2,Neut-Plasma Interact Invest Roble 81-070B-12 DE 2,Atmos Dynam and Energet Inv Mayr 81-070B-13 DE 2,Low Alt Plas Invest-Hi Resol Hoffman Explorer 64 81-100A SME 10/06/81 NASA-OSS 81-100A-01 SME,Limb View UV Ozone Spect Barth 81-100A-02 SME,Infrared Radiometer Barth 81-100A-03 SME,Near IR(1.27-Mircon)Spectrom Barth 81-100A-04 SME,Visible Nitrogen Dioxide Barth 81-100A-05 SME,Solar UV Monitor Barth 81-100A-06 SME,Solar Proton Alarm Barth Explorer 65 84-088A AMPTE/CCE 08/16/84 NASA-GSFC 84-088A-01 AMPTE/CCE,Hot Plasma Composition Shelley 84-088A-02 AMPTE/CCE,Med Energy Part Analyz McEntire 84-088A-03 AMPTE/CCE,Charge-E-Mass Spectrom Gloeckler 84-088A-04 AMPTE/CCE,Plasma Wave Experiment Scarf 84-088A-05 AMPTE/CCE,CCE Magnetometer Potemra Explorer 66 89-089A Cosmic Background Explor 11/18/89 NASA-GSFC 89-089A-01 COBE,Far IR Absolute Spectrophot Mather 89-089A-02 COBE,Diffuse IR Background Exper Hauser 89-089A-03 COBE,Differential Microwave Radio Smoot Explorer 67 92-031A EUVE 06/07/92 NASA 92-031A-01 EUVE,EUV Full-Sky Survey Bowyer 92-031A-02 EUVE,EUV Deep-Sky survey Bowyer Explorer 68 92-038A SAMPEX 07/03/92 NASA-GSFC 92-038A-01 SAMPEX,Low-E Ion Comp Anal(LICA) Mason 92-038A-02 SAMPEX,Heavy Ion Large Tele(HILT) Klecker 92-038A-03 SAMPEX,Mass Spect Telescope(MAST) Mewaldt 92-038A-04 SAMPEX,Proton,Electron Telescope Mewaldt Explorer 69 95-074A X-Ray Timing Explorer 12/30/95 NASA-GSFC 95-074A-01 XTE,X-Ray Sky Monitor Bradt 95-074A-02 XTE,Large Area X-Ray Prop Counter Holt 95-074A-03 XTE,High Energy X-Ray Timing Rothschil Explorer 70 96-049A FAST 08/21/96 NASA-GSFC 96-049A-01 FAST,ESA;Electrostatic Analyzers Carlson 96-049A-02 FAST,TEAMS;E Mass Ang Spectrogph Carlson 96-049A-03 FAST,EFLP;E-Field Lang Probe Exp Carlson 96-049A-04 FAST,3-Ax Flxgt+srch Coil Magntom Carlson Explorer 71 97-045A Advanced Composition Exp. 08/25/97 NASA-OSS 97-045A-01 ACE,Solar Wind Ion Mass Spectrom. Gloeckler 97-045A-02 ACE,Solar Wind Ion Comp.Spectrom. Gloeckler 97-045A-03 ACE,Ultra-Lo-E Isotope Spectrom. Gold 97-045A-04 ACE,Sol Enrg Part Ion Chrg Analyz Moebius 97-045A-05 ACE,Solar Isotope Spectrometer Cummings 97-045A-06 ACE,Cosmic Ray Isotope Spectrom. Cummings 97-045A-07 ACE,SW Electrn,Protn&Alpha Monitr McComas 97-045A-08 ACE,Enrg.Elect,Protn,Alpha Monitr Gold 97-045A-09 ACE,Magnetometer Ness 97-045A-10 ACE,Real Time Solar Wind - NOAA Zwickl Explorer 72 98-012A SNOE 02/26/98 US 98-012A-01 SNOE,UVS,UV Spectrometer Solomon 98-012A-02 SNOE,Auroral Photometer (AP) Solomon 98-012A-03 SNOE,SXP,Solar X-Ray, 0.2-3.5A Solomon Explorer 73 98-020A TRACE 04/02/98 NASA-GSFC 98-020A-01 TRACE Imaging Telescope Title Explorer 74 98-071A SWAS 12/06/98 NASA-GSFC 98-071A-01 SWAS,Submillimeter Wave Telescope Melnick Explorer 75 99-011A WIRE, Failed 03/05/99 NASA-GSFC 99-011A-01 WIRE Telescope Hacking Explorer 76 99-026A TERRIERS, Failed 05/18/99 BOSTON U Explorer 77 99-035A FUSE 06/23/99 JHU-ANU 99-035A-01 Far Ultraviolet Spectroscopy Moos Explorer 78 00-017A IMAGE 03/25/00 NASA-GSFC 00-017A-01 IMAGE, Radio Plasma Imager (RPI) Burch 00-017A-02 IMAGE, Low-Energy Neut Atom(LENA) Burch 00-017A-03 IMAGE, Med-Energy Neut Atom(MENA) Burch 00-017A-04 IMAGE, Hi-Energy Neut Atom (HENA) Burch 00-017A-05 IMAGE, Far UV Imager (FUV) Burch 00-017A-06 IMAGE, Extreme UV Imager (EUV) BurchIf you would like further information on NASA's Explorer missions or on a specific Explorer, you may wish to query the NSSDC Master Catalog by typing in a name in the space below.
Curator:
Ed Bell, ed.bell@gsfc.nasa.gov, +1-301-286-1187
Code 633, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA