Hawkeye-1 Injun-6 IE-D Ionospheric Explorer-D Neutral Point Explorer
Mission type
Ionospheric research
Operator
NASA / Langley Research Center
COSPAR ID
1974-040A
SATCAT no.
07325
Mission duration
3 years, 10 months, 24 days
Spacecraft properties
Spacecraft
Explorer LII
Spacecraft type
Ionospheric Explorer
Bus
Injun
Manufacturer
University of Iowa
Launch mass
22.7 kg (50 lb)
Power
36 watts
Start of mission
Launch date
3 June 1974, 23:09:11 UTC
Rocket
Scout E1 (S-191C) [1]
Launch site
Vandenberg, SLC-5
Contractor
Vought
Entered service
3 June 1974
End of mission
Decay date
28 April 1978
Orbital parameters
Reference system
Geocentric orbit
Regime
Polar orbit
Perigee altitude
469 km (291 mi)
Apogee altitude
125,570 km (78,030 mi)
Inclination
89.80°
Period
3032.40 minutes
Instruments
Extremely low frequency (ELF) / Very low frequency (VLF) Receivers Low-Energy Proton and Electron Differential Energy Analyzer (LEPEDEA) Triaxial Fluxgate Magnetometer
Explorer program
← Explorer 51
Explorer 53 →
Explorer 52, also known as Hawkeye-1, Injun-F, Neutral Point Explorer, IE-D, Ionospheric Explorer-D, was a NASA satellite launched on 3 June 1974, from Vandenberg Air Force Base on a Scout E-1 launch vehicle.[2]
^"Scout-E1". Gunter's Space Page. 12 December 2017. Retrieved 17 November 2021.
^"Display: Explorer 52 (Hawkeye-1) 1974-040A". NASA. 28 October 2021. Retrieved 17 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.
