BlueWalker 1

S3065

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General

Designation	44105 / 19018AD
Launch date	1 Apr 2019
Country of origin	United States
Mission	Technology
Perigee/Apogee	441/520 km
Inclination	97.5°
Period	94.1 min
Launch vehicle	PSLV #48

Satellite to test IoT technologies from AST & Science (data relay), part of SpaceMobile.
6U cubesat
Was ejected in the wrong orbit (expected was 493 x 510 km)

The constellation to provide 4G/5G to existing terminal is planned to have 243 satellites in 16 orbital planes (53°) at 400 km altitude and use these frequency bands:
Gateways: downlink: 37.5-42.5 GHz; uplink: 45.5-47.0, 47.2-50.2, 50.4-51.4 GHz
User terminals: downlink: 617-960, 1930-1990, 2110-2180, 2350-2360 MHz, uplink 663-915, 1710-1780, 1580-1910, 2305-2320 MHz
To use a 64.38 m2 (693 square foot) phased array antenna

In Apr 2024 the company requests modification of the constellation: 248 satellites with 225 satellites operating at 730-740 km altitude with inclination of 40 or 55°, with 18 satellites operating at 725-740 km in equatorial orbit, and with 5 satellites operating in 515-252 km with a 53° inclination.
Feeder links: 37.5-42.0 GHz uplink and 47.2-50.2 and 50.4-51.4 GHz downlink
TT&C: 430-440 MHz (both ways) and 2025-2110 MHz uplink, 2200-2290 MHz downlink.
User links: downlink: 617-960, 1805-2200 MHz; uplink 663-915, 1710-2010 MHz

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End of life

Decay

29 Nov 2023

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External resources

https://www.ast-science.com/

n2yo.com tracking

Technical data

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Specifications

Prime contractor	NanoAvionics
Platform	Multi-Purpose 6U
Mass at launch	10
Dry mass
Dimension
Solar array
Stabilization	active
DC power
Design lifetime

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