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FLOCK 1-21 (39557)
COSPAR: 1998-067EA | Alt Name: Flock 1-21
DECAYED
Image
Additional Sources
Launch Details
Launch Date
November 20, 1998
Launch Site
Launch Pad
Pad 0A
Launch Vehicle
Antares 120
Orbital Elements
NORAD ID
39557
International Designator
1998-067EA
Decay Date
5/25/2014
Basic Satellite Info
Name
FLOCK 1-21
Alternative Name
Flock 1-21
Type
Payload
Status
Decayed
Owner
PLABS
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
FLOCK 1-21 is a CubeSat (3U) satellite developed and owned by PLABS in the United States. It was launched on November 20, 1998, from the TYSMC launch site using the Antares 120 launch vehicle from Pad 0A. The satellite has dimensions of 0.3 meters in length, 0.1 meters in diameter, and a span of 0.3 meters. Its dry mass is 4.25 kg, which matches its launch mass. Equipped with PS0, PS1 or PS2 imaging payload as Dove 072B, the satellite's mission focuses on technology and it uses solar cells along with batteries for power supply. The satellite's shape is described as Box+2 pan, and its radar cross-section (RCS) value is 0.1074. It was stabilized by February 26, 2014, and has an expected operational lifetime of about one year in ISS orbit or two to three years in Sun-Synchronous Orbit (SSO).
Physical Characteristics
Length
0.3
Diameter
0.1
Span
0.3
Dry Mass
4.25
Launch Mass
4.25
Shape
Box+2 pan
Radar Cross Section
0.1074
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Dove 072B
Purpose
Technology
Mission
Technology
Manufacturer
PLABS
Life Expectancy
~ 1 year (ISS orbit); 2-3 years (SSO)
Bus
Cubesat 3U
Configuration
CubeSat (3U)
Motor
None (most); FEEP (#Flock-3p')
Equipment
PS0, PS1 or PS2 imaging payload
Power System
Solar cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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