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🛰️ SATELLITE · HISTORICAL RECORD

P-11 No. 4413

Re-entered 28 Sep 1969

P-11 No. 4413 (NORAD 3409, COSPAR 1968-078B) was a US satellite that re-entered Earth's atmosphere on 28 Sep 1969, launched on 18 Sep 1968 on the CORONA J-49 mission. It was operated by NRO / SAFSP as part of the EHH B programme. The spacecraft was built by LMSC/EDLS on the P-11 ML bus, with a mass of 108 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
1969
re-entered
1
year on orbit
108
kg mass

Lifecycle

Launched18 Sep 1968 · on the CORONA J-49 mission
Operational27 Sep 1969 · entered service
Retired27 Sep 1969 · end of operational service
Re-entered28 Sep 1969 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3409
COSPAR1968-078B
TypeSatellite
OperatorNRO / SAFSP
Country / StateUS
ManufacturerLMSC/EDLS
BusP-11 ML
Mass108 kg
ProgrammeEHH B
CategorySIG
OrbitLEO (LLEO/I)
Altitude491 × 503 km
Inclination83.2°

Frequently asked questions

What happened to P-11 No. 4413?

P-11 No. 4413 re-entered Earth's atmosphere on 28 Sep 1969, 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 P-11 No. 4413 re-enter the atmosphere?

P-11 No. 4413 re-entered on 28 Sep 1969, according to Orbital Radar's historical catalogue records.

Who operated and built P-11 No. 4413?

P-11 No. 4413 was operated by NRO / SAFSP and built by LMSC/EDLS (US).

Launched together

CORONA J-49Re-entered 1968
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.