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// communications · 1964

Echo 2

NASA passive communications satellite, reentered in 1969. Echo 2 was launched on January 25, 1964 aboard a Thor SLV-2 Agena B from Vandenberg. Latest status in GCAT: reentered (orbital decay) (Jun 7, 1969).

COSPAR 1964-004ANORAD 740United States

Identity

Name in GCAT
Echo 2
Payload designation
NASA A-12
Other names
Echo C:P
International designator
1964-004A
NORAD catalog number
740
GCAT identifier
S00740
UN registration
A/AC.105/INF.063

Mission

Mission type
Communications
Use
Civil government
Program
Echo
Country
United States
Builder
G T Schjeldahl Inc.
Platform (bus)
Echo 135'

Launch

Date
January 25, 1964 · 13:59 UTC
Launch record
1964-004Success
Spaceport
Vandenberg · pad 75-1-1

Orbit and fate

Orbit class (GCAT)
LEO/I
Perigee
1,008 km
Apogee
1,338 km
Inclination
81.48°
Status
Reentered (orbital decay)
Status date
June 7, 1969
Last known active
1964
End of operations
1964

Size

Mass
278 kg
Dry mass
256 kg
Length
41.0 m
Diameter
41.00 m
Span
41.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q2082097 (CC0).