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EXPLORER 21 (IMP-2)

NORAD 889 · Payload · Reentered 1966-01-30

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Launched
1964-10-04 · Cape Canaveral / Kennedy, USA
Country / operator
US (United States)
Object type
Payload
Purpose
Space science
Mass
62 kg
Size
0.2 × 0.7 m · 2.5 m deployed
Perigee × Apogee
917 × 94,291 km
Inclination
33.7°
Period
2079.9 min
Eccentricity
0.8650
Orbit data
Reconstructed from catalog orbit

Mass, size and purpose from GCAT (J. McDowell, CC BY 4.0).