Advanced Composition Explorer
 | |
| Status | aktiv |
|---|---|
| Organisation | NASA |
| Andra namn | Explorer 71 |
| NSSDC-ID | 1997-045A[1] |
| Uppdragets varaktighet | 26 år, 10 månader och 15 dagar (planerad: 5 år) |
| Webbplats | www.srl.caltech.edu/ACE |
| Uppskjutning | |
| Uppskjutningsplats | Cape Canaveral LC-17A |
| Uppskjutning | 25 augusti 1997, 14:39 UTC |
| Uppskjutningsfarkost | Delta II |
| Omloppsbana runt Solen-Jorden L1 | |
| Banlutning | 0° |
| Omloppstid | 1 år |
| Egenskaper | |
| Massa | 757 kg |
| Effekt | 444 W |
Advanced Composition Explorer (ACE) eller Explorer 71 är en satellit uppsänd av NASA 1997 med uppgift att ge ständiga mätningar av solvinden. ACE ligger i en bana nära Lagrangepunkten L1, som ligger mellan solen och jorden på ett avstånd av 1,5 miljoner km från jorden (alltså ungefär en procent av avståndet till solen). Eftersom solvindens hastighet typiskt är runt 350 km/s så ser ACE de förhållanden som någon timma senare kommer att råda vid jorden, och som därför har betydelse för rymdvädret och jordens magnetosfär. ACE har därför stor betydelse för rymdväderprognoser och magnetosfärforskning. ACE-data finns normalt tillgängliga på internet inom några timmar.
Källor
- Advanced Composition Explorer (ACE) home page
- De senaste 24 timmarnas solvindsmätningar från ACE
- Aktuellt rymdväder
Fotnoter
- ^ ”NASA Space Science Data Coordinated Archive” (på engelska). NASA. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1997-045A. Läst 29 mars 2020.
Externa länkar
Wikimedia Commons har media som rör Advanced Composition Explorer.
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Media som används på denna webbplats
Sun920607.jpg
Solen och några solfläckar. De två små fläckarna i mitten har ungefär samma diameter som jorden.
Solen och några solfläckar. De två små fläckarna i mitten har ungefär samma diameter som jorden.
Advanced Composition Explorer.jpg
Representation of the Advanced Composition Explorer space.
Representation of the Advanced Composition Explorer space.
Advanced Composition Explorer launch.jpg
A Boeing Delta II expendable launch vehicle lifts off with NASA’s Advanced Composition Explorer (ACE) observatory at 10:39 a.m. EDT, on Aug. 25, 1997, from Launch Complex 17A, Cape Canaveral Air Station. This is the second Delta launch under the Boeing name and the first from Cape Canaveral. Launch was scrubbed one day by Air Force range safety personnel because two commercial fishing vessels were within the Delta’s launch danger area. The ACE spacecraft will study low-energy particles of solar origin and high-energy galactic particles on its one-million-mile journey. The collecting power of instruments aboard ACE is 10 to 1,000 times greater than anything previously flown to collect similar data by NASA. Study of these energetic particles may contribute to our understanding of the formation and evolution of the solar system. ACE has a two-year minimum mission lifetime and a goal of five years of service. ACE was built for NASA by the Johns Hopkins Applied Physics Laboratory and is managed by the Explorer Project Office at NASA's Goddard Space Flight Center. The lead scientific institution is the California Institute of Technology (Caltech) in Pasadena, Calif.
A Boeing Delta II expendable launch vehicle lifts off with NASA’s Advanced Composition Explorer (ACE) observatory at 10:39 a.m. EDT, on Aug. 25, 1997, from Launch Complex 17A, Cape Canaveral Air Station. This is the second Delta launch under the Boeing name and the first from Cape Canaveral. Launch was scrubbed one day by Air Force range safety personnel because two commercial fishing vessels were within the Delta’s launch danger area. The ACE spacecraft will study low-energy particles of solar origin and high-energy galactic particles on its one-million-mile journey. The collecting power of instruments aboard ACE is 10 to 1,000 times greater than anything previously flown to collect similar data by NASA. Study of these energetic particles may contribute to our understanding of the formation and evolution of the solar system. ACE has a two-year minimum mission lifetime and a goal of five years of service. ACE was built for NASA by the Johns Hopkins Applied Physics Laboratory and is managed by the Explorer Project Office at NASA's Goddard Space Flight Center. The lead scientific institution is the California Institute of Technology (Caltech) in Pasadena, Calif.
Explorer1.jpg
Explorer 1 satellite
Explorer 1 satellite