Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Microsat 2

retired

CommunicationsLEOCOSPAR 1991-051BLaunched 7/17/1991

Mission & Launch

Launch Mission: Microsat
Launch Vehicle: Pegasus
Launch Date: 7/17/1991
Last Contact: 1/22/1992

Orbit & Mass

Orbit Class: LEO
Altitude: 389.5 km
Inclination: 82.03 deg
Dry Mass: 19 kg
Total Mass: 21 kg

Payload Classification

Mission Type: Communications
Payload Category: COM
Payload Class: D

Organizations

Operator: U.S. Defense Advanced Research Projects Agency (DARPA)
Manufacturer: Defense Systems Inc

Registry

COSPAR ID: 1991-051B
UN Registration: ST/SG/SER.E/258

Mentions

1

All verified mentions of this spacecraft in source documents.

Primary Tag

Secondary Tags

Sort

From Date

To Date

Information Value0.0-5.0

Actions

Exolaunch manifested TORO3 for Pyras, 8U RIoT-2 for Rapidtek, and T.MicroSat-2 for Tron Future Tech and the Taiwan Space Agency.

RelationshipsPlanValue 4.5Mar 30, 2026Latest News