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USERS SEM

Re-entered 15 Jun 2007

USERS SEM (NORAD 27515, COSPAR 2002-042A) was a J satellite that re-entered Earth's atmosphere on 15 Jun 2007, launched on 10 Sep 2002 on the USERS SEM mission. It was operated by USEF / NASDA as part of the USERS programme. The spacecraft was built by MELCO on the USERS SM bus, with a mass of 800 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.

2002
launched
2007
re-entered
5
years on orbit
800
kg mass

Lifecycle

Launched10 Sep 2002 · on the USERS SEM mission
Operational25 Feb 2005 · entered service
Retired25 Feb 2005 · end of operational service
Re-entered15 Jun 2007 · atmospheric re-entry — object destroyed

Specifications

NORAD ID27515
COSPAR2002-042A
TypeSatellite
OperatorUSEF / NASDA
Country / StateJ
ManufacturerMELCO
BusUSERS SM
Mass800 kg
ProgrammeUSERS
CategoryMGRAV
OrbitLEO (LLEO/I)
Altitude474 × 489 km
Inclination30.4°

Frequently asked questions

What happened to USERS SEM?

USERS SEM re-entered Earth's atmosphere on 15 Jun 2007, ending a mission that began with its launch in 2002. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did USERS SEM re-enter the atmosphere?

USERS SEM re-entered on 15 Jun 2007, according to Orbital Radar's historical catalogue records.

Who operated and built USERS SEM?

USERS SEM was operated by USEF / NASDA and built by MELCO (J).

Launched together

DRTSNORAD 27516USERS REMRe-entered 2003
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.