The Day a Farm Boy Found a New World
Ninety-five years ago, a 24-year-old astronomer with no college degree made one of astronomy's most remarkable discoveries, finding a new planet that would challenge our understanding of the solar system
Launch Date
February 12, 1991
Launch Site
PLMSC
Launch Pad
LC133/3
Launch Vehicle
Kosmos 11K65M
NORAD ID
21332
International Designator
1991-009CP
Epoch
Mon, 11 May 2026 02:53:46 GMT
Apogee
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Perigee
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Inclination
74.20°
Right Ascension
171.38°
Eccentricity
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Argument of Perigee
300.52°
Period
118.19 min
Mean Motion
12.18 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Name
SL-8 DEB
Alternative Name
deb S3M
Type
Status
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
1 21332U 91009CP 26131.12067605 .00000241 00000-0 24395-2 0 9992
2 21332 74.1956 171.3765 0147607 300.5196 87.1102 12.18358998514108
Source: Celestrak
Length
0
Diameter
0
Span
0
Dry Mass
0
Launch Mass
0
Shape
N/A
Radar Cross Section
0.043
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
Unknown
Purpose
Unknown
Mission
Unknown
Manufacturer
Unknown
Life Expectancy
Unknown
Bus
Unknown
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
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