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🛰️ SATELLITE · HISTORICAL RECORD

THEMIS P1

Re-entered 5 Oct 2007

THEMIS P1 (NORAD 30581, COSPAR 2007-004B) was a US satellite that re-entered Earth's atmosphere on 5 Oct 2007, launched on 17 Feb 2007 on the THEMIS P5 mission. It was operated by GSFC as part of the MIDEX programme. The spacecraft was built by SWALES on the ATK-A100 bus, with a mass of 125 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.

2007
launched
2007
re-entered
0
years on orbit
125
kg mass

Lifecycle

Launched17 Feb 2007 · on the THEMIS P5 mission
Re-entered5 Oct 2007 · atmospheric re-entry — object destroyed

Specifications

NORAD ID30581
COSPAR2007-004B
TypeSatellite
OperatorGSFC
Country / StateUS
ManufacturerSWALES
BusATK-A100
Mass125 kg (76 kg dry)
ProgrammeMIDEX
CategorySCI/PLAN
OrbitLEO (DSO)
Altitude2,573 × 195,523 km
Inclination10.7°

Frequently asked questions

What happened to THEMIS P1?

THEMIS P1 re-entered Earth's atmosphere on 5 Oct 2007, ending a mission that began with its launch in 2007. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did THEMIS P1 re-enter the atmosphere?

THEMIS P1 re-entered on 5 Oct 2007, according to Orbital Radar's historical catalogue records.

Who operated and built THEMIS P1?

THEMIS P1 was operated by GSFC and built by SWALES (US).

Launched together

THEMIS P5NORAD 30580THEMIS P2Re-entered 2009THEMIS P3NORAD 30797THEMIS P4NORAD 30798
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.