ONEWEB-0401 (50481)

COSPAR: 2021-132N | Alt Name: OneWeb SL0401

Image
ONEWEB-0401 Satellite Image
Additional Sources
Launch Details

Launch Date

December 27, 2021

Launch Pad

LC31

Launch Vehicle

Soyuz-2-1B

Orbital Elements

NORAD ID

50481

International Designator

2021-132N

Epoch

Sun, 19 Jul 2026 19:59:28 GMT

Apogee

Calculating...

Perigee

Calculating...

Inclination

87.92°

Right Ascension

328.95°

Eccentricity

Calculating...

Argument of Perigee

108.11°

Period

109.20 min

Mean Motion

13.19 rev/day

Latitude

Calculating...

Longitude

Calculating...

Altitude

Calculating...

Velocity

Calculating...

Polar Plot
3D Visualization
Basic Satellite Info

Name

ONEWEB-0401

Alternative Name

OneWeb SL0401

Type

Payload

Status

Operational

Owner

ONEWEBN

Country

United Kingdom

Constellation

N/A

Related Satellites

Major Events

N/A

Latest TLEs
1 50481U 21132N   26200.83296691 -.00005785  00000+0 -14725-1 0  9997
2 50481  87.9206 328.9523 0001799 108.1132 252.0196 13.18642793225914

Source: Celestrak

Summary
The ONEWEB-0401 satellite, also known as OneWeb SL0401, is owned by OneWebN and manufactured by ONEWUS. It was launched on December 27, 2021, from the TYMSC launch site using a Soyuz-2-1B launch vehicle from LC31. The spacecraft uses an Arrow bus configuration with dimensions of 1.3 meters in length, 1 meter in diameter, and has a span of 5 meters. It has a dry mass of 140 kg and was launched with a total mass of 148 kg. Equipped with a Ku-Band payload for communication purposes, the satellite is powered by solar arrays and batteries. Its propulsion system includes SPT-50 or BHT-350 Hall effect thrusters. The mission's purpose is communication, and it is expected to have a lifetime of 7 years.
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 L12-021

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
This tool will help you track the satellite's position and predict its upcoming passes over your location. Simply input the coordinates or click the geolocation button to get started.
Next Pass
Azimuth Elevation Time (Local)
Start Azimuth
Max Elevation
Stop Azimuth
Time Until
Pass Duration

Satellite Articles

View All Posts »

Learn more about satellites and other related topics.

Space Brief 1 Dec 2025

Space Brief 1 Dec 2025

Today's brief covers China's latest classified satellite launch, breakups in orbital refueling experiments, exciting advancements in microsatellites, and SpaceX's remarkable strides in spaceflight.

Space Brief 8 Feb 2025

Space Brief 8 Feb 2025

Stay updated on key orbital events including Rocket Lab's upcoming launch, significant legislative moves in space traffic management, and changes in defense policies impacting space operations.

The Details of Apollo 1

The Details of Apollo 1

How a catastrophic fire in 1967 fundamentally altered NASA's approach to human spaceflight and continues to influence modern spacecraft design

Space Brief 22 Nov 2025

Space Brief 22 Nov 2025

Today's brief covers Blue Origin's national security mission, a new missile interceptor project by Space Force, developments with Starship boosters, and more.

Space Brief 23 Jan 2025

Space Brief 23 Jan 2025

Today's briefing covers the U.S. Space Force's substantial investments in commercial satellite services, a strategic military shift, Chinese space station upgrades, and NASA's policy changes.

Vulcan GEM 63XL Passes Static Fire; February Anomaly Still Under Investigation | KeepTrack Space Brief

Vulcan GEM 63XL Passes Static Fire; February Anomaly Still Under Investigation | KeepTrack Space Brief

Northrop Grumman's GEM 63XL solid rocket booster passed static fire testing, but ULA's investigation into a February 2026 Vulcan in-flight anomaly remains open. No RTF date set.

Space Brief 10 Feb 2025

Space Brief 10 Feb 2025

Discover today's key space events: SpaceX's Starlink launch, rocket debris risks, and advancements in nuclear rocket technology.

Boeing Ramps Up Missile-Tracking Sensor Production for Military Sats | KeepTrack Space Brief

Boeing Ramps Up Missile-Tracking Sensor Production for Military Sats | KeepTrack Space Brief

Boeing opens new facility to boost missile-tracking sensor production for military satellites. Tory Bruno joins Blue Origin for national security projects. 25 Starlink sats launched.