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. OV1-20
// space science · 1971

OV1-20

OV1-20 was one of nine spacecraft simultaneously placed into orbit from a single launch vehicle.. OV1-20 was launched on August 7, 1971 aboard a Atlas F from Vandenberg. Latest status in GCAT: reentered (orbital decay) (Aug 29, 1971).

COSPAR 1971-067ANORAD 5394United States

Identity

Name in GCAT
OV1-20
Payload designation
OV1-20P/FW4S
International designator
1971-067A
NORAD catalog number
5394
GCAT identifier
S05394
UN registration
A/AC.105/INF.242

Mission

Mission type
Space science
Use
Defense
Program
OV1 P
Country
United States
Builder
General Dynamics/Convair Division (Plant 19)
Platform (bus)
OV1P

Launch

Date
August 7, 1971 · 00:11 UTC
Launch record
1971-067Success
Rocket
Atlas F
Spaceport
Vandenberg · pad BMRSA2

Orbit and fate

Orbit class (GCAT)
LEO/P
Perigee
129 km
Apogee
1,610 km
Inclination
91.98°
Status
Reentered (orbital decay)
Status date
August 29, 1971
Last known active
Aug 7, 1971
End of operations
Aug 7, 1971

Size

Mass
196 kg
Dry mass
196 kg
Length
2.1 m
Diameter
0.70 m
Span
2.1 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q113275115 (CC0).