The Day America Reached Orbit
Sixty-three years ago, John Glenn became the first American to orbit Earth, piloting Friendship 7 through three historic orbits that transformed the Space Race
SL-12 R/B(2) (25629)
COSPAR: 1999-005D | Alt Name: Blok DM3 No. 4L
Image
Additional Sources
Launch Details
Launch Date
February 15, 1999
Launch Site
Launch Pad
LC81/23
Launch Vehicle
Proton-K/DM-2M
Orbital Elements
NORAD ID
25629
International Designator
1999-005D
Epoch
Sat, 04 Jul 2026 05:19:33 GMT
Apogee
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Perigee
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Inclination
16.50°
Right Ascension
177.20°
Eccentricity
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Argument of Perigee
287.06°
Period
759.52 min
Mean Motion
1.90 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
Basic Satellite Info
Name
SL-12 R/B(2)
Alternative Name
Blok DM3 No. 4L
Type
Rocket Body
Status
Space Junk
Owner
RVSNR
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 25629U 99005D 26185.22191067 -.00000110 00000-0 00000-0 0 9990
2 25629 16.5010 177.1978 5355983 287.0566 313.2654 1.89593019189592
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
7.1
Diameter
3.7
Span
7.1
Dry Mass
2560
Launch Mass
17610
Shape
Cyl
Radar Cross Section
26.4415
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Blok DM3 No. 4L
Purpose
Unknown
Mission
Unknown
Manufacturer
RKKE
Life Expectancy
Unknown
Bus
Blok DM2
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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