KOSEN-1
Mission information
Name
KOSEN-1
Alternate Names
JR5YGJ
Satellite ID
NJBJ-3838-9654-0508-8247
NORAD ID
49402
Website
http://space.kochi-ct.jp/kosen-1/
Country of Origin

Japan

Status
Satellite alive
Operational

Satellite is in orbit and operational

Image
KOSEN-1
Mission timeline
Launch Date
2021-11-09T00:00:00+00:00
Mode HF/U - Onboard SDR
Type
Transponder
Service
Amateur
Downlink Mode
AFSK
Downlink Frequency
435525000
Baud
1200
Uplink Mode
CW
Downlink High
435525000
Uplink Frequency
21125000
Uplink High
21150000
IARU Coordination
IARU Coordinated
Mode U - AFSK1k2
Type
Transmitter
Downlink Mode
AFSK
Downlink Frequency
435525000
Baud
1200
IARU Coordination
IARU Coordinated
Mode U - GMSK9k6
Type
Transmitter
Downlink Mode
GMSK
Downlink Frequency
435525000
Baud
9600
IARU Coordination
IARU Coordinated
Mode U - CW Beacon
Type
Transmitter
Downlink Mode
CW
Downlink Frequency
435525000
Baud
18
IARU Coordination
IARU Coordinated
Most Recent Observers (last 24h)
Observer Latest Data
HS0ZQS_UHF-OK03fu 2026-05-11 13:37:58 UTC
I LOVE BALI YES-OI71og 2026-05-11 11:58:32 UTC
PU4ELT-GH70qd 2026-05-11 11:17:50 UTC
M0EYT / 2E0NOG-IO80xs 2026-05-11 09:25:55 UTC
Dunchurch-IO92ii 2026-05-11 09:24:45 UTC
Data Frames Decoded - 30 Days
There is no decoded data for this satellite in the last 30 days.
Decoder: KOSEN-1 Telemetry
Script Name
kosen1
Decoder Fields
Click here
Orbital Elements
Latest Two-Line Element (TLE)
TLE Source
Space-Track.org
TLE Updated
2026-05-11 09:23:34 UTC
TLE Set
1 49402U 21102H   26131.04088000  .00004594  00000-0  17937-3 0  9990
2 49402 97.3222 173.9286 0012998 346.2844 13.8039 15.26320628248353
Satellite Suggestion History

Transmitter Suggestion History