The Day Humanity Gained New Eyes on the Universe
Forty-seven years ago, a revolutionary space telescope changed our view of the cosmos, pioneering international cooperation in space-based astronomy
Launch Date
December 13, 1975
Launch Site
Launch Pad
LC17A
Launch Vehicle
Delta 3914
NORAD ID
08476
International Designator
1975-117A
Epoch
Sat, 04 Jul 2026 00:23:38 GMT
Apogee
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Perigee
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Inclination
7.96°
Right Ascension
304.50°
Eccentricity
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Argument of Perigee
277.72°
Period
1445.74 min
Mean Motion
1.00 rev/day
Latitude
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Longitude
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Altitude
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Velocity
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Name
SATCOM 1
Alternative Name
Satcom 1
Type
Status
Owner
AMCR
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
1 08476U 75117A 26185.01641771 -.00000287 00000-0 00000-0 0 9993
2 08476 7.9552 304.5003 0014046 277.7249 183.7153 0.99602838 46534
Source: Celestrak
Apologies, there is no summary for this satellite yet. I am working to generate these for every object in the catalog, but it is going to take time.
Length
1.3
Diameter
1.3
Span
11.3
Dry Mass
335
Launch Mass
433
Shape
Box + 2 Pan
Radar Cross Section
1.9651
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Payload
RCA-A
Purpose
Communication
Mission
Communication
Manufacturer
RCA
Life Expectancy
7 years (#1, 2); 8 years (#3, 3R, 4)
Bus
Satcom
Configuration
AS-3000
Motor
SVM-7
Equipment
24 C-band transponders
Power System
2 deployable solar arrays, batteries
ADCS
Unknown
Transmitter Frequency
Unknown
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Forty-seven years ago, a revolutionary space telescope changed our view of the cosmos, pioneering international cooperation in space-based astronomy
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