SpaceX Hits 10,000 Starlink Satellites in Orbit | KeepTrack Space Brief
SpaceX surpassed 10,000 simultaneous Starlink satellites in orbit after Starlink 17-24 deployed 25 satellites from California. Milestone reached in under 7 years.
SL-8 R/B (08421)
COSPAR: 1975-103B | Alt Name: Kosmos-3M 31-275 Stage 2
Image
Additional Sources
Launch Details
Launch Date
November 4, 1975
Launch Site
PLMSC
Launch Pad
LC132/1
Launch Vehicle
Kosmos 11K65M
Orbital Elements
NORAD ID
08421
International Designator
1975-103B
Epoch
Sun, 19 Jul 2026 19:28:40 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
82.97°
Right Ascension
221.86°
Eccentricity
Calculating...
Argument of Perigee
305.14°
Period
104.57 min
Mean Motion
13.77 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
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Basic Satellite Info
Name
SL-8 R/B
Alternative Name
Kosmos-3M 31-275 Stage 2
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 08421U 75103B 26200.81158343 .00000001 00000+0 -13754-4 0 9999
2 08421 82.9712 221.8568 0021875 305.1395 228.1154 13.77098190545605
Source: Celestrak
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
4.2
Diameter
2.4
Span
4.2
Dry Mass
1434
Launch Mass
1434
Shape
Cyl
Radar Cross Section
4.5321
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
S3M
Purpose
Unknown
Mission
Unknown
Manufacturer
OAZ
Life Expectancy
Unknown
Bus
S3
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Map
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration
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