Spacecraft information: EXPLORER 20

Launch Details
Launched 24 August 1964
Flight ended –
Status Unknown
Launch site Air Force Western Test Range, California, USA
Owner United States
NORAD ID 870
COSPAR ID 1964-051A
Observing

Current orbital elements

Inclination 79.898°
Eccentricity 0.00961
RA ascending node 18.568 hr
Argument perigee 283.053°
Mean anomaly 75.991°
Orbital period 103.464 min
Epoch of osculation 17 Jun 2026, 09:14

See historical orbital elements »

Derived Quantities

Min Altitude 859.3 km
Mean Altitude 929.5 km
Peak Altitude 999.7 km

Launched alongside

SCOUT X-4 R/B SCOUT X-4 DEB SCOUT X-4 DEB SCOUT X-4 DEB SCOUT X-4 DEB

Orbital History

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Cambridge

Latitude:
Longitude:
Timezone:

42.38°N
71.11°W
EDT

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Last updated: 17 Jun 2026, 18:18 UTC
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