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- High_Energy_Astronomy_Observatory_3 abstract "The last of NASA's three High Energy Astronomy Observatories, HEAO 3 was launched 20 September 1979 on an Atlas-Centaur launch vehicle, into a nearly circular, 43.6 degree inclination low-Earth orbit with an initial perigee of 486.4 km.The normal operating mode was a continuous celestial scan, spinning approximately once every 20 min about the spacecraft z-axis, which was nominally pointed at the Sun.Total mass of the observatory at launch was 2,660.0 kilograms (5,864.3 lb).HEAO 3 included three scientific instruments: the first a cryogenic high-resolution germanium gamma-ray spectrometer, and two devoted to cosmic-ray observations.The scientific objectives of the mission's three experiments were:(1) to study intensity, spectrum, and time behavior of X-ray and gamma-ray sources between 0.06 and 10 MeV; measure isotropy of the diffuse X-ray and gamma-ray background; and perform an exploratory search for X-and gamma-ray line emissions;(2) to determine the isotopic composition of the most abundant components of the cosmic-ray flux with atomic mass between 7 and 56, and the flux of each element with atomic number (Z) between Z = 4 and Z = 50;(3) to search for super-heavy nuclei up to Z = 120 and measure the composition of the nuclei with Z >20.↑".
- High_Energy_Astronomy_Observatory_3 cosparId "1979-082A".
- High_Energy_Astronomy_Observatory_3 thumbnail HEAO-3.gif?width=300.
- High_Energy_Astronomy_Observatory_3 wikiPageID "14597919".
- High_Energy_Astronomy_Observatory_3 wikiPageRevisionID "591845538".
- High_Energy_Astronomy_Observatory_3 apsis "gee".
- High_Energy_Astronomy_Observatory_3 cosparId "1979".
- High_Energy_Astronomy_Observatory_3 decayDate "1981-12-07".
- High_Energy_Astronomy_Observatory_3 excentricity "0.00134".
- High_Energy_Astronomy_Observatory_3 hasPhotoCollection High_Energy_Astronomy_Observatory_3.
- High_Energy_Astronomy_Observatory_3 imageCaption "HEAO 3".
- High_Energy_Astronomy_Observatory_3 launchDate "--09-20".
- High_Energy_Astronomy_Observatory_3 launchRocket Atlas-Centaur.
- High_Energy_Astronomy_Observatory_3 launchSite Cape_Canaveral_Air_Force_Station.
- High_Energy_Astronomy_Observatory_3 launchSite Spaceport_Florida_Launch_Complex_36.
- High_Energy_Astronomy_Observatory_3 manufacturer TRW_Inc..
- High_Energy_Astronomy_Observatory_3 missionType "Astronomy".
- High_Energy_Astronomy_Observatory_3 name "HEAO-3".
- High_Energy_Astronomy_Observatory_3 operator NASA.
- High_Energy_Astronomy_Observatory_3 orbitInclination "43.6".
- High_Energy_Astronomy_Observatory_3 orbitPeriod "5670.0".
- High_Energy_Astronomy_Observatory_3 orbitReference Geocentric_orbit.
- High_Energy_Astronomy_Observatory_3 orbitRegime Low_Earth_orbit.
- High_Energy_Astronomy_Observatory_3 satcat "11532".
- High_Energy_Astronomy_Observatory_3 subject Category:1979_in_spaceflight.
- High_Energy_Astronomy_Observatory_3 subject Category:Gamma-ray_telescopes.
- High_Energy_Astronomy_Observatory_3 subject Category:Space_observatories.
- High_Energy_Astronomy_Observatory_3 subject Category:Spacecraft_launched_in_1979.
- High_Energy_Astronomy_Observatory_3 subject Category:X-ray_telescopes.
- High_Energy_Astronomy_Observatory_3 type ArtificialSatellite.
- High_Energy_Astronomy_Observatory_3 type CelestialBody.
- High_Energy_Astronomy_Observatory_3 type Satellite.
- High_Energy_Astronomy_Observatory_3 type Thing.
- High_Energy_Astronomy_Observatory_3 comment "The last of NASA's three High Energy Astronomy Observatories, HEAO 3 was launched 20 September 1979 on an Atlas-Centaur launch vehicle, into a nearly circular, 43.6 degree inclination low-Earth orbit with an initial perigee of 486.4 km.The normal operating mode was a continuous celestial scan, spinning approximately once every 20 min about the spacecraft z-axis, which was nominally pointed at the Sun.Total mass of the observatory at launch was 2,660.0 kilograms (5,864.3 lb).HEAO 3 included three scientific instruments: the first a cryogenic high-resolution germanium gamma-ray spectrometer, and two devoted to cosmic-ray observations.The scientific objectives of the mission's three experiments were:(1) to study intensity, spectrum, and time behavior of X-ray and gamma-ray sources between 0.06 and 10 MeV; measure isotropy of the diffuse X-ray and gamma-ray background; and perform an exploratory search for X-and gamma-ray line emissions;(2) to determine the isotopic composition of the most abundant components of the cosmic-ray flux with atomic mass between 7 and 56, and the flux of each element with atomic number (Z) between Z = 4 and Z = 50;(3) to search for super-heavy nuclei up to Z = 120 and measure the composition of the nuclei with Z >20.↑".
- High_Energy_Astronomy_Observatory_3 label "HEAO-3".
- High_Energy_Astronomy_Observatory_3 label "HEAO-3".
- High_Energy_Astronomy_Observatory_3 label "HEAO-3".
- High_Energy_Astronomy_Observatory_3 label "HEAO-3".
- High_Energy_Astronomy_Observatory_3 label "High Energy Astronomy Observatory 3".
- High_Energy_Astronomy_Observatory_3 label "High Energy Astronomy Observatory 3".
- High_Energy_Astronomy_Observatory_3 label "High Energy Astronomy Observatory 3".
- High_Energy_Astronomy_Observatory_3 label "High Energy Astronomy Observatory 3".
- High_Energy_Astronomy_Observatory_3 sameAs High_Energy_Astronomy_Observatory_3.
- High_Energy_Astronomy_Observatory_3 sameAs HEAO-3.
- High_Energy_Astronomy_Observatory_3 sameAs HEAO-3.
- High_Energy_Astronomy_Observatory_3 sameAs High_Energy_Astronomy_Observatory_3.
- High_Energy_Astronomy_Observatory_3 sameAs HEAO-3.
- High_Energy_Astronomy_Observatory_3 sameAs High_Energy_Astronomy_Observatory_3.
- High_Energy_Astronomy_Observatory_3 sameAs m.03d915q.
- High_Energy_Astronomy_Observatory_3 sameAs Q1190799.
- High_Energy_Astronomy_Observatory_3 sameAs Q1190799.
- High_Energy_Astronomy_Observatory_3 wasDerivedFrom High_Energy_Astronomy_Observatory_3?oldid=591845538.
- High_Energy_Astronomy_Observatory_3 depiction HEAO-3.gif.
- High_Energy_Astronomy_Observatory_3 isPrimaryTopicOf High_Energy_Astronomy_Observatory_3.