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. Discoverer 25
// optical imaging · 1961

Discoverer 25

Reconnaissance satellite. Discoverer 25 was launched on June 16, 1961 aboard a Thor Agena B from Vandenberg. Latest status in GCAT: reentered attached to another object (Jul 12, 1961).

COSPAR 1961 XI 1NORAD 108United States

Identity

Name in GCAT
Discoverer 25
Payload designation
CORONA C'-5
Other names
:C,:CC,NRO Mission 9017:CM,CORONA 25:CA
International designator
1961 XI 1
NORAD catalog number
108
GCAT identifier
S00108

Mission

Mission type
Optical imaging
Use
Defense
Program
CORONA Early
Country
United States
Builder
Lockheed Missiles and Space Co.
Platform (bus)
CORONA

Launch

Date
June 16, 1961 · 23:02 UTC
Launch record
1961 XISuccess
Spaceport
Vandenberg · pad 75-1-1

Orbit and fate

Orbit class (GCAT)
LLEO/I
Perigee
223 km
Apogee
362 km
Inclination
82.11°
Status
Reentered attached to another object
Status date
July 12, 1961
Last known active
Jun 19, 1961
End of operations
Jun 19, 1961

Size

Mass
134 kg
Dry mass
134 kg
Total mass with attached objects
1,114 kg
Length
1.3 m
Diameter
1.50 m
Span
1.3 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q5281807 (CC0).