2 Starshield Sats Fly on Rare Public Mission | KeepTrack X Report
SpaceX publicly confirmed 2 Starshield government satellites launched from Vandenberg on June 6, a rare disclosure for the classified Starlink variant.
ONEWEB-0276 (48994)
COSPAR: 2021-060AD | Alt Name: OneWeb SL0276
Image
Additional Sources
Launch Details
Launch Date
July 1, 2021
Launch Site
VOSTO
Launch Pad
PU1S
Launch Vehicle
Soyuz-2-1B
Orbital Elements
NORAD ID
48994
International Designator
2021-060AD
Epoch
Sat, 04 Jul 2026 01:23:31 GMT
Apogee
Calculating...
Perigee
Calculating...
Inclination
87.91°
Right Ascension
225.42°
Eccentricity
Calculating...
Argument of Perigee
93.85°
Period
109.37 min
Mean Motion
13.17 rev/day
Latitude
Calculating...
Longitude
Calculating...
Altitude
Calculating...
Velocity
Calculating...
Polar Plot
3D Visualization
Basic Satellite Info
Name
ONEWEB-0276
Alternative Name
OneWeb SL0276
Type
Payload
Status
Operational
Owner
ONEWEBN
Country
United Kingdom
Constellation
N/A
Related Satellites
Major Events
N/A
Latest TLEs
1 48994U 21060AD 26185.05800415 -.00000075 00000-0 -22946-3 0 9998
2 48994 87.9078 225.4241 0001911 93.8486 266.2863 13.16593616241792
Source: Celestrak
Summary
The ONEWEB-0276 satellite, also known as OneWeb SL0276, is a communication satellite manufactured by ONEWUS and owned by ONEWEBN. Launched on July 1, 2021, from the VOSTO site using a Soyuz-2-1B launch vehicle, it has an arrow bus configuration with dimensions of 1.3 meters in length, 1 meter in diameter, and a span of 5 meters. Its dry mass is 140 kilograms, and its launch mass was 148 kilograms. Equipped with a Ku-Band payload and powered by solar arrays and batteries, the satellite's motor consists of SPT-50 or BHT-350 Hall effect thrusters. The shape of the satellite is described as Trapezoid+2 pan. It is designed to operate for approximately 7 years in orbit.
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 L8-019
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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