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. Hitchhiker 2
// space science · 1964

Hitchhiker 2

American prototype satellite. Hitchhiker 2 was launched on August 14, 1964 aboard a Atlas SLV-3 Agena D from Vandenberg. Latest status in GCAT: reentered (orbital decay) (Mar 8, 1979).

COSPAR 1964-045BNORAD 851United States

Identity

Name in GCAT
Hitchhiker III
Common name
Hitchhiker 2
Payload designation
P-11 No. 4202
Other names
OPS 3316
International designator
1964-045B
NORAD catalog number
851
GCAT identifier
S00851
UN registration
A/AC.105/INF.080

Mission

Mission type
Space science
Use
Civil government
Program
EHH A
Owner
NRO
Country
United States
Builder
Lockheed Missiles and Space Co.
Platform (bus)
P-11

Launch

Date
August 14, 1964 · 22:00 UTC
Launch record
1964-045Success
Spaceport
Vandenberg · pad PALC2-4

Orbit and fate

Orbit class (GCAT)
LEO/S
Perigee
271 km
Apogee
3,724 km
Inclination
95.69°
Status
Reentered (orbital decay)
Status date
March 8, 1979
Last known active
February 1965
End of operations
February 1965

Size

Mass
74 kg
Dry mass
74 kg
Total mass with attached objects
105 kg
Length
0.3 m
Diameter
0.90 m
Span
0.9 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q11801722 (CC0).