1MS No. 1

Re-entered 20 Aug 1963

1MS No. 1 (NORAD 269, COSPAR 1962 IOT 1) was a SU satellite that re-entered Earth's atmosphere on 20 Aug 1963, launched on 6 Apr 1962. It was operated by OKB1 as part of the MS programme. The spacecraft was built by OKB1 on the MS bus, with a mass of 224 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.

1962

launched

1963

re-entered

year on orbit

224

kg mass

Lifecycle

Launched6 Apr 1962

Operational17 Apr 1962 · entered service

Retired17 Apr 1962 · end of operational service

Re-entered20 Aug 1963 · atmospheric re-entry — object destroyed

Specifications

NORAD ID269

COSPAR1962 IOT 1

TypeSatellite

OperatorOKB1

Country / StateSU

ManufacturerOKB1

BusMS

Mass224 kg

ProgrammeMS

CategoryTECH

OrbitLEO (LEO/I)

Altitude218 × 1,449 km

Inclination49.0°

Frequently asked questions

What happened to 1MS No. 1?

1MS No. 1 re-entered Earth's atmosphere on 20 Aug 1963, ending a mission that began with its launch in 1962. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did 1MS No. 1 re-enter the atmosphere?

1MS No. 1 re-entered on 20 Aug 1963, according to Orbital Radar's historical catalogue records.

Who operated and built 1MS No. 1?

1MS No. 1 was operated by OKB1 and built by OKB1 (SU).

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

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