Falcon Heavy Returns After 18-Month Hiatus for ViaSat-3 | KeepTrack X Report
SpaceX's Falcon Heavy lifts off for the 12th time after 18 months grounded, delivering the final ViaSat-3 satellite from LC-39A at 10:21 a.m. EDT.
COMSTAR 3 (10975)
COSPAR: 1978-068A | Alt Name: Comstar 203
Image
Additional Sources
Launch Details
Launch Date
June 29, 1978
Launch Site
Launch Pad
LC36B
Launch Vehicle
Atlas SLV-3D Centaur
Orbital Elements
NORAD ID
10975
International Designator
1978-068A
Epoch
Fri, 03 Jul 2026 21:21:13 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
9.48°
Right Ascension
315.10°
Eccentricity
Calculating...
Argument of Perigee
320.72°
Period
1451.70 min
Mean Motion
0.99 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
COMSTAR 3
Alternative Name
Comstar 203
Type
Payload
Status
Unknown
Owner
COM
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 10975U 78068A 26184.88973744 .00000046 00000-0 00000-0 0 9992
2 10975 9.4842 315.0970 0022276 320.7202 44.2946 0.99194380 46362
Source: Celestrak
Summary
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.
Physical Characteristics
Length
3.5
Diameter
2.4
Span
6.3
Dry Mass
590
Launch Mass
748
Shape
Cyl + Ant
Radar Cross Section
4.0597
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Comstar D-3
Purpose
Communication
Mission
Communication
Manufacturer
HSES
Life Expectancy
7 years
Bus
HS-351
Configuration
HS-351
Motor
SVM-4A
Equipment
24 C-band transponders
Power System
Solar cells (body mounted), batteries
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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