Space Brief 27 Apr 2025
Today's highlights include SpaceX's dual Starlink launches, NASA's progress on the Dragonfly mission to Titan, and delays in Starlink's Indian market entry.
ONEWEB-0393 (50473)
COSPAR: 2021-132E | Alt Name: OneWeb SL0393
Image
Additional Sources
Launch Details
Launch Date
December 27, 2021
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-2-1B
Orbital Elements
NORAD ID
50473
International Designator
2021-132E
Epoch
Sun, 19 Jul 2026 11:32:27 GMT
Apogee
Calculating...
Perigee
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Inclination
87.91°
Right Ascension
359.44°
Eccentricity
Calculating...
Argument of Perigee
89.43°
Period
109.29 min
Mean Motion
13.18 rev/day
Latitude
Calculating...
Longitude
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Altitude
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Velocity
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Polar Plot
3D Visualization
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Basic Satellite Info
Name
ONEWEB-0393
Alternative Name
OneWeb SL0393
Type
Payload
Status
Operational
Owner
ONEWEBN
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 50473U 21132E 26200.48087714 .00000051 00000+0 99335-4 0 9995
2 50473 87.9148 359.4399 0001762 89.4306 270.7028 13.17647630222365
Source: Celestrak
Summary
The ONEWEB-0393 satellite, also known as OneWeb SL0393, is a communication satellite built by ONEWUS for the UK's OneWeb network. It was launched on December 27, 2021, from TYMSC LC31 using a Soyuz-2-1B launch vehicle. The satellite features an Arrow bus configuration with dimensions of 1.3 meters in length and 1 meter in diameter, and a span of 5 meters. It has a dry mass of 140 kilograms and a launch mass of 148 kilograms, powered by solar arrays and batteries. Equipped with a Ku-Band payload for communication purposes, it is designed to operate for approximately seven years and uses SPT-50 or BHT-350 Hall effect thrusters for propulsion.
Physical Characteristics
Length
1.3
Diameter
1
Span
5
Dry Mass
140
Launch Mass
148
Shape
Trapezoid+2 pan
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
OneWeb L12-009
Purpose
Communication
Mission
Communication
Manufacturer
ONEWUS
Life Expectancy
+ 7 years
Bus
ARROW
Configuration
Arrow bus
Motor
SPT-50 or BHT-350 Hall effect thrusters
Equipment
Ku-Band payload
Power System
solar arrays, 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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