[amsat-bb] STARS-C reports requested

Tim N8DEU n8deu at outlook.com
Fri Dec 23 21:05:47 UTC 2016

A group here in Huntsville is attempting to help the STARS-C team collect signal reports and data from the STARS-C satellite recently launch from the ISS. The team will filter the data and forward it to the STARS-C team at Shizuoka University in Japan.

A NASA colleague received an email from Professor Yoshiki Yamagiwa, an engineering professor at Shizuoka University in Japan, requesting help listening for signals from a pair of CubeSats recently released from ISS. University orbiter set to lift space elevator technology<http://www.asahi.com/ajw/articles/AJ201607060005.html>:<http://www.asahi.com/ajw/articles/AJ201607060005.html>The Asahi Shimbun<http://www.asahi.com/ajw/articles/AJ201607060005.html> provides overview information about the STARS-C (Space Tethered Autonomous Robotic Satellite-Cube). The basic configuration is two 1U satellites, a mother and a daughter, connected by a tether.

Our understanding is that the STARS-C team is trying to receive the CW beacons as part of the first step of their operations, but their signals they're getting are too weak for data analysis, especially from the daughter satellite. They're reaching out to ham operators and ground stations at universities, and would appreciate reports on CW data received.

Orbit and frequency info for the satellites:

19 Dec 2016 18:19:55


Satellite Name:               STARS-C

Time: (UTCG)                 19 Dec 2016 08:50:19.273

Semi-major Axis (km)     6785.004

Eccentricity                     0.0009020

Inclination (deg)              51.6492

RAAN (deg)                    214.6791

Arg of Perigee (deg)       33.9061

Mean Anomaly (deg)     293.7118

(*1) True of Date Coordinate System, Osculating Orbit

# Mother satellite: CW 437.245MHz, FM downlinks 437.405MHz

# Daughter satellite: CW 437.255MHz, FM downlinks 437.425MHz

Details of the telemetry format are at http://www.ipc.shizuoka.ac.jp/~vk127139/download/Telemetry%20Format.pdf<http://www.ipc.shizuoka.ac.jp/%7Evk127139/download/Telemetry%20Format.pdf>

The STARS-C team will appreciate any info that reaches your ears, automated receivers, or whatever!

For additional information here is a link from the AMSAT UK group:


Please email all reports with date and time directly to scotty.collect at gmail.com<mailto:scotty.collect at gmail.com>

Thank You,

Tim – N8DEU

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