Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

Discoverer 27

retired

Earth ObservationsuborbitalCOSPAR 1961-F07Launched 7/21/1961

Mission & Launch

Launch Mission: Launch 1961-F07
Launch Vehicle: Thor Agena B
Launch Date: 7/21/1961
Last Contact: 7/21/1961

Orbit & Mass

Orbit Class: suborbital
Altitude: -3,145 km
Inclination: 82 deg
Dry Mass: 140 kg
Total Mass: 140 kg

Payload Classification

Mission Type: Earth Observation
Payload Category: IMG
Payload Class: D

Organizations

Operator: U.S. Space Systems Command
Manufacturer: Lockheed Martin

Registry

COSPAR ID: 1961-F07