Official name BY70-1
Alternative name BY70-1
Cospar ID 2016-083C
Norad ID 41909
Launch date 2016-12-28
Launch site TSC
Launch vehicle CZ-2D (2)
Country/Organization China
Type application Technology, amateur communication
Operator CAST, Beijing Bayi High School
RCS size SMALL
Decay date 2017-02-18
Shape Box
Mass (kg) 10
Height (m) 0.27
Width (m) 0.11
Depth (m) 0.27
Span (m^2) 0.27
Contractors CAST, Beijing Bayi High School
Propulsion None
Configuration CubeSat (2U)
Power Solar cells, batteries

BY 1 or Bayi Kepu Weixing 1 (sometimes also called BY70 1) is a 2U-CubeSat project led by China Center for Aerospace Science and Technology International Communications for school education and amateur radio. Students from the Beijing Bayi High School built the satellite under the instructions from experts.

The amateur radio equipment onboard will provide telecommand, telemetry and FM repeater functions. The spacecraft will be 3 axis stabilised and have deployable solar panels. Proposing a V/U transponder and requesting a 436.2MHz downlink and a 145.935 MHz uplink.

The satellite was launched on 28 December 2016 on a CZ-2D (2) rocket as a piggy-back payload. A launch mishap left the payloads in a lower than planned orbit.

Satellite COSPAR Date LS Launch Vehicle Remarks
BY70-1 2016-083C 2016-12-28 TSC CZ-2D (2) with GaoJing-1 01, GaoJing-1 02
BY70-2 2020-042B 2020-07-03 TSC CZ-4B with Gaofen Duomo