SRET 2 [CNES]
Official name SRET 2
Alternative name SRET 2
Cospar ID 1975-049B
Norad ID 7910
Launch date 1975-06-05
Launch site PKMTR
Launch vehicle Molniya-M (Blok-ML)
Country/Organization France
Type application Technology
Operator CNES
RCS size LARGE
Decay date 1988-07-10
Shape Oct Poly
Mass (kg) 29.34
Height (m) 0.6
Width (m) 0.6
Depth (m) 0.6
Span (m^2) 0.6
Propulsion None
Power Solar cells, batteries

SRET 2 (Satellite des Recherches et d'Etudes Technologiques), or MAS 2 (Maliy Avtonomiy Sputnik), was a French s technological research satellite.

It was launched piggyback on the Molniya-1 30 satellite from Plesetsk on the 5th June 1975.

The 29.6 kg microsat was used to test the passive cryogenic radiation system for the Meteosat geostationary meteorological satellites. Also it tested cooling systems, solar array technology, the effects of radiation doses on different systems, and served to study of the aging of thermal casings and plastic films.

The spacecraft decayed from orbit on the 10 July 1988.

Satellite COSPAR Date LS Launch Vehicle Remarks
SRET 2 1975-049B 1975-06-05 PKMTR Molniya-M (Blok-ML) with Molniya-1K 30