// space science · 1991

ERS-1

European Earth observation satellite (1991-2000). ERS-1 was launched on July 17, 1991 aboard a Ariane 40 from Kourou. Latest status in GCAT: in orbit.

COSPAR 1991-050ANORAD 21574European Space Agency

Identity

Name in GCAT: ERS-1
International designator: 1991-050A
NORAD catalog number: 21574
GCAT identifier: S21574
UN registration: ST/SG/SER.E/266

Mission

Mission type: Space science, Radar imaging
Use: Civil government
Program: ESA ERS
Owner: ESA
Country: European Space Agency
Builder: Deutsche Aerospace AG (DASA)-Friedrichsafen (Dornier GmBH)
Platform (bus): ESA ERS

Launch

Date: July 17, 1991 · 01:46 UTC
Launch record: 1991-050Success
Rocket: Ariane 40
Spaceport: Kourou · pad ELA2

Orbit and fate

Orbit class (GCAT): LEO/S
Perigee: 776 km
Apogee: 778 km
Inclination: 98.52°
Status: In orbit
Last known active: Mar 10, 2000
End of operations: Mar 10, 2000

Size

Mass: 2,384 kg
Dry mass: 2,080 kg
Length: 11.8 m
Diameter: 2.50 m
Span: 11.8 m

Launched together

UoSAT-5Communications · SSTL Orbcomm-XCommunications · Orbcomm TUBSAT-1Communications · TUB SARAAstronomy · ESIEESPACE

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q987402 (CC0).