1 year, 10 months and 10 days (achieved) 64 years, 8 months and 3 days (in orbit)
Spacecraft properties
Spacecraft
Explorer VII
Spacecraft type
Science Explorer
Bus
S-1A
Manufacturer
Jet Propulsion Laboratory
Launch mass
41.5 kg (91 lb)
Dimensions
76 × 76 cm (30 × 30 in)
Start of mission
Launch date
13 October 1959, 15:30:04 GMT[1]
Rocket
Juno II (AM-19A)
Launch site
Cape Canaveral, LC-5
Contractor
Army Ballistic Missile Agency
Entered service
13 October 1960
End of mission
Last contact
24 August 1961
Orbital parameters
Reference system
Geocentric orbit[2]
Regime
Low Earth orbit
Perigee altitude
573 km (356 mi)
Apogee altitude
1,073 km (667 mi)
Inclination
50.27°
Period
101.38 minutes
Instruments
Ground Based Ionospheric Heavy Primary Cosmic Rays Micrometeorite Solar X-Ray and Lyman-Alpha Radiation Thermal Radiation Trapped Radiation and Solar Protons
Explorer program
← Explorer 6
Explorer S-46 →
Explorer 7 was a NASA satellite launched on 13 October 1959, at 15:30:04 GMT,[1] by a Juno II launch vehicle from Cape Canaveral Air Force Station (CCAFS) to an orbit of 573 × 1,073 km (356 × 667 mi) and inclination of 50.27°.[2] It was designed to measure solar X-ray and Lyman-alpha flux, trapped energetic particles, and heavy primary cosmic rays. Secondary objectives included collecting data on micrometeoroid penetration, molecular sputtering and studying the Earth-atmosphere heat balance.[3]
Cutaway of Explorer 7
^ ab"Launch Log". Jonathan's Space Report. 21 July 2021. Retrieved 2 November 2021.
^ ab"Trajectory: Explorer 7 (1959-009A)". NASA. 28 October 2021. Retrieved 2 November 2021. This article incorporates text from this source, which is in the public domain.
^"Display: Explorer 7 (1959-009A)". NASA. 28 October 2021. Retrieved 2 November 2021. This article incorporates text from this source, which is in the public domain.
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Global Information
This article incorporates text from this source, which is in the public domain.
