Space Brief 8 Jul 2025
Today's highlights include the cancellation of Starship landing plans, Planet Labs' defense expansion, and cutting-edge radiation-hardened tech for space and defense.
ONEWEB-0420 (50495)
COSPAR: 2021-132AC | Alt Name: OneWeb SL0420
Image
Additional Sources
Launch Details
Launch Date
December 27, 2021
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-2-1B
Orbital Elements
NORAD ID
50495
International Designator
2021-132AC
Epoch
Sun, 19 Jul 2026 19:10:50 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
87.92°
Right Ascension
328.97°
Eccentricity
Calculating...
Argument of Perigee
103.53°
Period
109.20 min
Mean Motion
13.19 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
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Basic Satellite Info
Name
ONEWEB-0420
Alternative Name
OneWeb SL0420
Type
Payload
Status
Operational
Owner
ONEWEBN
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 50495U 21132AC 26200.79919133 .00000022 00000+0 23307-4 0 9996
2 50495 87.9195 328.9732 0002045 103.5318 256.6041 13.18684161225877
Source: Celestrak
Summary
The ONEWEB-0420 satellite, also known as OneWeb SL0420, is a communication satellite launched by ONEWBN from the UK on December 27, 2021, using a Soyuz-2-1B launch vehicle at LC31 in TYMSC. It uses an Arrow bus configuration and has a length of 1.3 meters, diameter of 1 meter, and a span of 5 meters. The satellite weighs 148 kg at launch with a dry mass of 140 kg. Equipped with a Ku-Band payload and solar arrays for power, it is designed to operate for approximately seven years in space. Its propulsion system includes SPT-50 or BHT-350 Hall effect thrusters. The satellite has a trapezoid shape plus two panels.
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 L12-001
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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