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EXPLORER 28 (IMP-3)

NORAD 1388 · Payload · Reentered 1968-07-04

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Launched
1965-05-29 · Cape Canaveral / Kennedy, USA
Country / operator
US (United States)
Object type
Payload
Purpose
Space science
Mass
59 kg
Size
0.3 × 0.7 m · 5 m deployed
Perigee × Apogee
32,289 × 227,451 km
Inclination
53.6°
Period
8341.1 min
Eccentricity
0.7162
Orbit data
Reconstructed from catalog orbit

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