Space Brief 2 Feb 2025
Today's highlights include new satellite launches by SpaceX, technical hiccups for an Indian navigation satellite, and insights into the future of satellite servicing.
ONEWEB-0311 (49097)
COSPAR: 2021-075Y | Alt Name: OneWeb SL0311
Image
Additional Sources
Launch Details
Launch Date
August 21, 2021
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-2-1B
Orbital Elements
NORAD ID
49097
International Designator
2021-075Y
Epoch
Sat, 04 Jul 2026 06:10:34 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
87.91°
Right Ascension
2.47°
Eccentricity
Calculating...
Argument of Perigee
77.42°
Period
109.29 min
Mean Motion
13.18 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
ONEWEB-0311
Alternative Name
OneWeb SL0311
Type
Payload
Status
Operational
Owner
ONEWEBN
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 49097U 21075Y 26185.25734327 -.00000175 00000-0 -48491-3 0 9993
2 49097 87.9139 2.4665 0001996 77.4174 282.7181 13.17648779235873
Source: Celestrak
Summary
The ONEWEB-0311 satellite, also known as OneWeb SL0311, is a communication satellite manufactured by ONEWUS and operated by ONEWEBN. Launched on August 21, 2021, from the Tymshc launch site using a Soyuz-2-1B rocket, this satellite has dimensions of 1.3 meters in length, 1 meter in diameter, and spans 5 meters when fully deployed. It weighs approximately 148 kilograms at launch and 140 kilograms dry mass. The satellite is equipped with a Ku-Band payload for communication purposes and uses solar arrays and batteries for power. Its mission involves providing communication services with an expected lifetime of seven years. The propulsion system consists of SPT-50 or BHT-350 Hall effect thrusters, while its shape is described as trapezoid with 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 L9-015
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
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 22 Jan 2025
Today's highlights include defense sector investments, major military contracts with Rocket Lab, and a glimpse at new American Innovation dollar coins featuring space achievements.
X Report 19 Mar 2025
SpaceX safely returns Crew-9 from ISS, launches new Starlink satellites, and showcases its satellite kit production capabilities.
Space Brief 28 Apr 2025
Today's highlights include SpaceX's 250th Starlink mission, a key Senate vote for NASA's next administrator, and insights into satellite missions and movements.
Space Force Awards $54.5M to Starfish Space for GEO Servicing | KeepTrack Space Brief
Space Force awards $54.5M to Starfish Space for GEO satellite servicing vehicle. Artemis II heads to launch pad for first crewed Moon flyby in 54 years. Crew-12 confirmed.
Artemis 2 Returns to Pad, Targets April 1 Launch | KeepTrack Space Brief
NASA's SLS and Orion spacecraft rolled back to Launch Complex 39B, targeting April 1 for first crewed lunar flyby with four astronauts aboard.
Space Brief 10 Sep 2025
Today's highlights include China's launch of a mystery spysat, Maxar's terrain data for U.S. Army systems, and multiple U.S. defense firms enhancing satellite capabilities.
Space Brief 8 May 2025
Today we cover new appointments at NASA, calls for increased Space Force funding, and a successful test of a hypersonic vehicle. Further investigations target SpaceX, and a documentary highlights space superiority.