I2P No. 505

Re-entered 30 Oct 1970

I2P No. 505 (NORAD 4598, COSPAR 1970-091A) was a SU satellite that re-entered Earth's atmosphere on 30 Oct 1970, launched on 30 Oct 1970 on the I2P mission. It was operated by PKO as part of the IS 5V91T programme. The spacecraft was built by TSKBM/KB1 on the IS bus, with a mass of 1,400 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.

1970

launched

1970

re-entered

years on orbit

1,400

kg mass

Lifecycle

Launched30 Oct 1970 · on the I2P mission

Operational30 Oct 1970 · entered service

Retired30 Oct 1970 · end of operational service

Re-entered30 Oct 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4598

COSPAR1970-091A

TypeSatellite

OperatorPKO

Country / StateSU

ManufacturerTSKBM/KB1

BusIS

Mass1,400 kg

ProgrammeIS 5V91T

CategoryWEAPON

OrbitLEO (LEO/I)

Altitude565 × 993 km

Inclination62.9°

Frequently asked questions

What happened to I2P No. 505?

I2P No. 505 re-entered Earth's atmosphere on 30 Oct 1970, ending a mission that began with its launch in 1970. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did I2P No. 505 re-enter the atmosphere?

I2P No. 505 re-entered on 30 Oct 1970, according to Orbital Radar's historical catalogue records.

Who operated and built I2P No. 505?

I2P No. 505 was operated by PKO and built by TSKBM/KB1 (SU).

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

Browse the live satellite directory → Re-entered satellites archive → Launch record: I2P → What is space debris? →