10,168 Starlink Satellites in Orbit, X Report 6 Apr 2026
Current number of Starlink satellites in orbit April 2026: 10,168 working of 10,177 tracked, 11,724 launched. Fleet health tops 99.9%.
STS 40 (21399)
COSPAR: 1991-040A | Alt Name: Columbia (STS-40)
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 5, 1991
Launch Site
Launch Pad
LC39B
Launch Vehicle
Space Shuttle
Orbital Elements
NORAD ID
21399
International Designator
1991-040A
Decay Date
6/14/1991
Basic Satellite Info
Name
STS 40
Alternative Name
Columbia (STS-40)
Type
Payload
Status
Decayed
Owner
JSC
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
STS 40, also known as Columbia (STS-40), is a crewed spacecraft launched on June 5, 1991, from LC39B at the Kennedy Space Center using the Space Shuttle launch vehicle. It has dimensions of 37.3 meters in length and span with a diameter of 23.8 meters. The satellite's dry mass is 89,081 kilograms and its launch mass was 95,722 kilograms. Manufactured by RWI, it serves as a crewed spacecraft equipped with fuel cells and batteries for power supply. Its configuration is described as a winged orbiter with a shape of box + 2 wings + fin. The mission objective aligns with its purpose as a crewed spacecraft.
Physical Characteristics
Length
37.3
Diameter
23.8
Span
37.3
Dry Mass
89081
Launch Mass
95722
Shape
Box + 2 Wing + Fin
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
OV-102
Purpose
Crewed Spacecraft
Mission
Crewed Spacecraft
Manufacturer
RWI
Life Expectancy
Unknown
Bus
STS OV
Configuration
Winged orbiter
Motor
2 x OME (AJ10-190)
Equipment
Unknown
Power System
Fuel cells, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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