2026-244Latest orbital launch: Falcon 9 · Starlink Group 15-16 · Oct 27, 2026 · VandenbergLaunch record →
sci-techmaventhe history of spaceflight, in data
  1. Home
  2. Spacecraft
  3. UoSAT-4
// communications · 1990

UoSAT-4

Failed British Low Earth Orbit Satellite. UoSAT-4 was launched on January 22, 1990 aboard a Ariane 40 from Kourou. Latest status in GCAT: in orbit.

COSPAR 1990-005CNORAD 20438United Kingdom

Identity

Name in GCAT
UoSAT-OSCAR-15
Common name
UoSAT-4
Payload designation
UoSAT 4
Other names
UO-15
International designator
1990-005C
NORAD catalog number
20438
GCAT identifier
S20438
UN registration
ST/SG/SER.E/219

Mission

Mission type
Communications
Use
Commercial
Program
Uosat
Owner
SSTL
Country
United Kingdom
Builder
Surrey Satellite Technology Ltd
Platform (bus)
UoSAT

Launch

Date
January 22, 1990 · 01:35 UTC
Launch record
1990-005Success
Rocket
Ariane 40
Spaceport
Kourou · pad ELA2

Orbit and fate

Orbit class (GCAT)
LEO/S
Perigee
786 km
Apogee
804 km
Inclination
98.71°
Status
In orbit
Last known active
Jan 24, 1990
End of operations
Jan 24, 1990

Size

Mass
47 kg
Dry mass
47 kg
Length
0.6 m
Diameter
0.40 m
Span
6.5 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q7897872 (CC0).