Discoverer 21

USA

Orig.PL Name: CORONA RM-2

Launch data:

Designation	00084 / 1961 Zeta1 / 61006A
Launch date	18 Feb 1961 - 22:58 UT
Launch site	Va, LC75-3 pad 5
Launch vehicle	Thor-DM21 Agena-B (#261)
Mission
Earth orbit:
Perigee / Apogee	km
Inclination	°
Period	min

Spacecraft data:

Prime contractor
Customer
Platform
Mass at launch	kg
Dry Mass	kg
Basic shape
Dimension
Solar array
Stabilization
DC power

Decay:

Descent date:	20 Apr 1962
Lifetime:

Astrophilately covers:

Discoverer 21 cover

Launch cancel Vandenberg A.F.B.

Ref.: #1, #7, #120 - update: 18.11.17