Explorer 34

Explorer 34
Explorer 34 satellite
NamesIMP-F
IMP-4
Interplanetary Monitoring Platform-4
Mission typeSpace physics
OperatorNASA
COSPAR ID1967-051A Edit this at Wikidata
SATCAT no.02817
Mission duration2 years (achieved)
Spacecraft properties
SpacecraftExplorer XXXIV
Spacecraft typeInterplanetary Monitoring Platform
BusIMP
ManufacturerGoddard Space Flight Center
Launch mass163 kg (359 lb)
Dimensions71 × 20.3 cm (28.0 × 8.0 in)
Power4 deployable solar arrays and batteries
Start of mission
Launch date24 May 1967, 14:05:54 GMT[1]
RocketDelta E1 (Thor 486 / Delta 049)
Launch siteVandenberg, SLC-2E[2]
Entered service24 May 1967
End of mission
Last contact3 May 1969
Decay date3 May 1969 [3]
Orbital parameters
Reference systemGeocentric orbit[4]
RegimeHighly elliptical orbit
Perigee altitude2,031 km (1,262 mi)
Apogee altitude209,242 km (130,017 mi)
Inclination68.50°
Period6218.30 minutes
Instruments
← IMP-D
IMP-E →

Explorer 34 (IMP-F, IMP-4), was a NASA satellite launched as part of Explorer program. Explorer 34 as launched on 24 May 1967 from Vandenberg Air Force Base, California, with Thor-Delta E1 launch vehicle. Explorer 34 was the fifth satellite launched as part of the Interplanetary Monitoring Platform program, but was known as "IMP-4" because the preceding launch was more specifically part of the "Anchored IMP" sub-program.[5] The spacecraft was put into space between the launches of Explorer 33 (IMP-D / AIMP-1) in 1966 and Explorer 35 (IMP-E / AIMP-2) in July 1967, but the next satellite to use Explorer 34's general design was Explorer 41 (IMP-G / IMP-5), which flew in 1969.[6]

  1. ^ "Launch Log". Jonathan's Space Report. Jonathan McDowell. 21 July 2021. Retrieved 11 November 2021.
  2. ^ "IMP". Encyclopedia Astronautica. Archived from the original on 21 December 2016. Retrieved 16 June 2018.
  3. ^ "EXPLORER 34". N2YO.com. Retrieved 16 June 2018.
  4. ^ "Trajectory: Explorer-34 (IMP-F) 1967-051A". NASA. 28 October 2021. Retrieved 11 November 2021. Public Domain This article incorporates text from this source, which is in the public domain.
  5. ^ Claude Lafleur. "Explorer 34 / IMP-4". Spacecraft Encyclopedia. Retrieved 11 November 2021.
  6. ^ "Explorer-series reference images". Retrieved 4 July 2021.