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CS1 (49261)
COSPAR: 2021-088B | Alt Name: Cesium Satellite 1
Image
Additional Sources
Launch Details
Launch Date
September 27, 2021
Launch Site
AFWTR
Launch Pad
SLC3E
Launch Vehicle
Atlas V 401
Orbital Elements
NORAD ID
49261
International Designator
2021-088B
Epoch
Sat, 04 Jul 2026 03:47:38 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
97.37°
Right Ascension
248.44°
Eccentricity
Calculating...
Argument of Perigee
26.76°
Period
93.80 min
Mean Motion
15.35 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
CS1
Alternative Name
Cesium Satellite 1
Type
Payload
Status
Operational
Owner
CESIUM
Country
United States
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 49261U 21088B 26185.15808560 .00019305 00000-0 56520-3 0 9995
2 49261 97.3749 248.4395 0011822 26.7628 333.4223 15.35206584263025
Source: Celestrak
Summary
CS1, also known as Cesium Satellite 1, is a 6U CubeSat technology satellite owned and manufactured by CESIUM in the United States. It was launched on September 27, 2021, from AFWTR SLC3E using an Atlas V 401 launch vehicle. The satellite measures 0.3 meters in length, has a diameter of 0.2 meters, and spans 1 meter with its extended components. It has a dry mass of 10 kilograms and the same launch mass. Equipped with solar cells and batteries for power, CS1 is designed to conduct technology demonstrations. Its shape consists of a box configuration with three panels that can likely be deployed or adjusted. No additional equipment, major events, frequencies, or material composition details are provided in the data.
Physical Characteristics
Length
0.3
Diameter
0.2
Span
1
Dry Mass
10
Launch Mass
10
Shape
Box + 3 pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
Cesium Satellite 1
Purpose
Technology
Mission
Technology
Manufacturer
CESIUM
Life Expectancy
Unknown
Bus
Cubesat 6U
Configuration
CubeSat (6U)
Motor
Unknown
Equipment
Unknown
Power System
Solar cells, 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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