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. Launches
  3. 1977
  4. 1977-029
// orbital launch

Geos 1

Delta 2914 launch from Cape Canaveral & Kennedy (United States) on April 20, 1977, carrying 1 payload. GCAT records the launch as a failure.

April 20, 1977 · 10:15 UTCLaunch 1977-029Launch no. 1,938 in the log
SpaceportCape Canaveral & Kennedypad LC17B
OutcomeFailure · 0.7stage 3 guidance or control failure
Launch agencyGSFCUnited States

Flight

Date and time (UTC)
April 20, 1977, 10:15
Launch designation
1977-029
Mission
Geos 1
Vehicle flight ID
617/D130

Orbit and payload

Initial apogee
38,634 km
Payload mass to orbit
0.573 t
Payloads
1
GCAT launch code
OF70 · S3G

Payloads

PayloadDesignationOwnerMission typeMassFate
Geos 11977-029ANORAD 9931European Space AgencySpace science267 kgIn orbit

Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.