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🛰️ SATELLITE · HISTORICAL RECORD

Pioneer D

Re-entered 10 Nov 1968

Pioneer D (NORAD 3533, COSPAR 1968-100A) was a US satellite that re-entered Earth's atmosphere on 10 Nov 1968, launched on 8 Nov 1968 on the Pioneer D mission. It was operated by ARC as part of the Solar Pioneer programme. The spacecraft was built by TRW on the Solar Pioneer bus, with a mass of 67 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
67
kg mass

Lifecycle

Launched8 Nov 1968 · on the Pioneer D mission
Operational18 May 1983 · entered service
Retired18 May 1983 · end of operational service
Re-entered10 Nov 1968 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3533
COSPAR1968-100A
TypeSatellite
OperatorARC
Country / StateUS
ManufacturerTRW
BusSolar Pioneer
Mass67 kg
ProgrammeSolar Pioneer
CategoryPLAN
OrbitHEO (EEO)
Altitude456 × -163,279 km
Inclination34.7°

Frequently asked questions

What happened to Pioneer D?

Pioneer D re-entered Earth's atmosphere on 10 Nov 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 Pioneer D re-enter the atmosphere?

Pioneer D re-entered on 10 Nov 1968, according to Orbital Radar's historical catalogue records.

Who operated and built Pioneer D?

Pioneer D was operated by ARC and built by TRW (US).

Launched together

ERS 31Re-entered 1979
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.