China's Shenlong Spaceplane Releases Mystery Object | KeepTrack Space Brief
China's Shenlong spaceplane released an unidentified object in orbit, drawing scrutiny amid U.S. Space Force Victus Haze RPO demonstrations. Tracking data critical.
ONEWEB-0317 (49103)
COSPAR: 2021-075AE | Alt Name: OneWeb SL0317
Image
Additional Sources
Launch Details
Launch Date
August 21, 2021
Launch Site
Launch Pad
LC31
Launch Vehicle
Soyuz-2-1B
Orbital Elements
NORAD ID
49103
International Designator
2021-075AE
Epoch
Sat, 04 Jul 2026 05:06:24 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
87.90°
Right Ascension
347.28°
Eccentricity
Calculating...
Argument of Perigee
112.60°
Period
109.72 min
Mean Motion
13.12 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
ONEWEB-0317
Alternative Name
OneWeb SL0317
Type
Payload
Status
Operational
Owner
ONEWEBN
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 49103U 21075AE 26185.21278697 .00000375 00000-0 10074-2 0 9995
2 49103 87.8961 347.2829 0002169 112.5993 247.5366 13.12441311237423
Source: Celestrak
Summary
The ONEWEB-0317 satellite, also known as OneWeb SL0317, was launched on August 21, 2021, from the TSYMC launch site using a Soyuz-2-1B launch vehicle from LC31. Built by ONEWUS and operated by ONEWEBN, this UK-based satellite is designed for communication purposes with a mission lifetime of seven years. It uses an Arrow bus configuration equipped with SPT-50 or BHT-350 Hall effect thrusters and a Ku-Band payload named OneWeb L9-013. The satellite measures 1.3 meters in length, has a diameter of 1 meter, and a span of 5 meters. It weighs 148 kilograms at launch with a dry mass of 140 kilograms. Power is provided by solar arrays and batteries, and its shape is described as Trapezoid+2 pan.
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 L9-013
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.
X Report 6 Dec 2024
SpaceX achieves a milestone with its 350th successful mission, including a significant Starlink launch, while Starship advances in testing. Meanwhile, SpaceX boosts SiriusXM's satellite fleet and industry competitors make strides.
X Report 1 Oct 2025
SpaceX gears up for significant upcoming launches while Starlink makes an impactful difference in disaster recovery efforts. Meanwhile, ESA and Avio reveal plans for competitive advancements in reusable rocket technology.
X Report 14 Nov 2025
SpaceX progresses on Starship testing while Rocket Lab delays its Neutron rocket debut, potentially impacting the competitive landscape in space launches.
Space Brief 24 Nov 2024
Today's briefing covers Blue Origin's New Glenn nearing its first launch, SpaceX's 400th Falcon 9 mission with Starlink satellites, advancements in space-based weather prediction, and more.
X Report 20 Feb 2025
SpaceX and Rocket Lab make headlines with simultaneous launches, while Musk's Starliner comments stir controversy.
Space Brief 15 Jun 2025
Today’s highlights focus on the launch preparations for the Dragoon Mission, China’s seismo-electromagnetic satellite launch, NASA budget cut impacts, and a major expansion by American Pacific Corporation.
The Day Two Satellites Hit Each Other at 26,000 MPH
On February 10, 2009, an active Iridium communications satellite and a derelict Soviet military spacecraft slammed into each other 789 kilometers above Siberia. The collision produced more than 2,300 pieces of trackable debris that are still up there. Seventeen years later, the Iridium-Cosmos collision remains the event that made space debris a policy problem the world could no longer ignore.