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SES-21 (53961)
COSPAR: 2022-123B | Alt Name: SES-21
Image
Additional Sources
Launch Details
Launch Date
October 4, 2022
Launch Site
Launch Pad
SLC41
Launch Vehicle
Atlas V 531
Orbital Elements
NORAD ID
53961
International Designator
2022-123B
Epoch
Mon, 20 Jul 2026 05:39:44 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
0.04°
Right Ascension
41.15°
Eccentricity
Calculating...
Argument of Perigee
5.35°
Period
1431.25 min
Mean Motion
1.01 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
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Basic Satellite Info
Name
SES-21
Alternative Name
SES-21
Type
Payload
Status
Operational
Owner
SESSAP
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 53961U 22123B 26201.23593572 .00000000 00000+0 00000+0 0 9999
2 53961 0.0368 41.1485 0018188 5.3458 205.6439 01.00611186 7546
Source: Celestrak
Summary
SES-21 is a communication satellite designated by NORAD CAT ID 53961 and OBJECT ID 2022-123B. It utilizes the BSS-702SP bus configuration and was manufactured by BOES for SESSAP, with a launch mass of 1768 kg and a dry mass of 1638 kg. The satellite measures 5 meters in length and has a diameter of 3.5 meters with a span of 30 meters due to its solar arrays. It was launched on October 4, 2022, from the SLC41 pad at the AFETR site using an Atlas V 531 launch vehicle. The mission is designed for a 15-year lifetime and carries 10 C-band transponders powered by two solar arrays. The satellite's shape is described as Box + 2 Pan and it was stabilized on October 5, 2022.
Physical Characteristics
Length
5
Diameter
3.5
Span
30
Dry Mass
1638
Launch Mass
1768
Shape
Box + 2 Pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
SES-21
Purpose
Communication
Mission
Communication
Manufacturer
BOES
Life Expectancy
15 years
Bus
BSS-702SP
Configuration
BSS-702SP
Motor
R-4D
Equipment
10 C-band transponders
Power System
2 solar arrays
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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