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AFTRACK 18 (S.T. LOW)

Re-entered 31 Dec 1961

AFTRACK 18 (S.T. LOW) (NORAD 218, COSPAR 1961 A LAM 2) was a US satellite that re-entered Earth's atmosphere on 31 Dec 1961, launched on 22 Dec 1961. It was operated by SAFSP as part of the AFTRACK programme. The spacecraft was built by CHAIL on the AFTRACK bus, with a mass of 5 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.

1961
launched
1961
re-entered
0
years on orbit
5
kg mass

Lifecycle

Launched22 Dec 1961
Operational23 Dec 1961 · entered service
Retired23 Dec 1961 · end of operational service
Re-entered31 Dec 1961 · atmospheric re-entry — object destroyed

Specifications

NORAD ID218
COSPAR1961 A LAM 2
TypeSatellite
OperatorSAFSP
Country / StateUS
ManufacturerCHAIL
BusAFTRACK
Mass5 kg
ProgrammeAFTRACK
CategorySIG
OrbitLEO (LLEO/P)
Altitude230 × 650 km
Inclination89.7°

Frequently asked questions

What happened to AFTRACK 18 (S.T. LOW)?

AFTRACK 18 (S.T. LOW) re-entered Earth's atmosphere on 31 Dec 1961, ending a mission that began with its launch in 1961. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did AFTRACK 18 (S.T. LOW) re-enter the atmosphere?

AFTRACK 18 (S.T. LOW) re-entered on 31 Dec 1961, according to Orbital Radar's historical catalogue records.

Who operated and built AFTRACK 18 (S.T. LOW)?

AFTRACK 18 (S.T. LOW) was operated by SAFSP and built by CHAIL (US).

Launched together

SAMOS E-5 No. 2Re-entered 1962
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.