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🛰️ SATELLITE · HISTORICAL RECORD

Apollo SC020

Re-entered 4 Apr 1968

Apollo SC020 (NORAD 3170, COSPAR 1968-025A) was a US satellite that re-entered Earth's atmosphere on 4 Apr 1968, launched on 4 Apr 1968 on the Apollo CM-020 mission. It was operated by MSC as part of the Apollo I programme. The spacecraft was built by NAAD on the CM bus, with a mass of 5,689 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

1968
launched
1968
re-entered
0
years on orbit
5,689
kg mass

Lifecycle

Launched4 Apr 1968 · on the Apollo CM-020 mission
Operational4 Apr 1968 · entered service
Retired4 Apr 1968 · end of operational service
Re-entered4 Apr 1968 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3170
COSPAR1968-025A
TypeSatellite
OperatorMSC
Country / StateUS
ManufacturerNAAD
BusCM
Mass5,689 kg (5,573 kg dry)
ProgrammeApollo I
CategorySS
Orbit (TA)
Altitude33 × 22,533 km
Inclination32.7°

Frequently asked questions

What happened to Apollo SC020?

Apollo SC020 re-entered Earth's atmosphere on 4 Apr 1968, ending a mission that began with its launch in 1968. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Apollo SC020 re-enter the atmosphere?

Apollo SC020 re-entered on 4 Apr 1968, according to Orbital Radar's historical catalogue records.

Who operated and built Apollo SC020?

Apollo SC020 was operated by MSC and built by NAAD (US).

Launched together

LTA-2RRe-entered 1968
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.