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Discoverer 20
Reconnaissance satellite. Discoverer 20 was launched on February 17, 1961 aboard a Thor Agena B from Vandenberg. Latest status in GCAT: reentered attached to another object (Jul 28, 1962).
COSPAR 1961 EPS 1NORAD 83United States
Identity
- Name in GCAT
- Discoverer 20
- Payload designation
- ARGON 1
- Other names
- :C,:CC,NRO Mission 9014A:CM,CORONA 20:CA
- International designator
- 1961 EPS 1
- NORAD catalog number
- 83
- GCAT identifier
- S00083
- UN registration
- A/AC.105/INF.001
Mission
- Mission type
- Optical imaging
- Use
- Defense
- Program
- CORONA ARGON
- Owner
- USAF BMD
- Country
- United States
- Builder
- Lockheed Missiles and Space Division
- Platform (bus)
- CORONA ARGON
Launch
- Date
- February 17, 1961 · 20:25 UTC
- Launch record
- 1961 EPSSuccess
- Rocket
- Thor Agena B
- Spaceport
- Vandenberg · pad 75-3-4
Orbit and fate
- Orbit class (GCAT)
- LLEO/I
- Perigee
- 283 km
- Apogee
- 770 km
- Inclination
- 80.91°
- Status
- Reentered attached to another object
- Status date
- July 28, 1962
- Last known active
- Feb 21, 1961
- End of operations
- Feb 21, 1961
Size
- Mass
- 108 kg
- Dry mass
- 108 kg
- Total mass with attached objects
- 848 kg
- Length
- 1.3 m
- Diameter
- 1.50 m
- Span
- 1.5 m
Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q5281803 (CC0).