CO-57
CUBESAT XI-IV · amateur radio satellite, NORAD 27848
Not heard todayCO-57 frequencies
| Uplink | Downlink | Beacon | Mode |
|---|---|---|---|
| — | — | 436.8475 MHz | CW |
| — | 437.490 MHz | — | AFSK 1k2 |
| — | — | 436.8487 MHz | CW 15 bd |
Nominal frequencies, without Doppler. The live map shifts them for your station during a pass. Frequencies: SatNOGS DB (modified: working amateur transmitters only, in MHz), CC BY-SA 4.0.
About CO-57
CO-57 (CubeSat XI-IV) from the University of Tokyo was one of the first CubeSats ever launched, on 30 June 2003 on a Rockot rocket from Plesetsk, together with CUTE-1 (CO-55) from the Tokyo Institute of Technology.
More than twenty years later its CW beacon on 70 cm is still heard, which makes it one of the longest-lived CubeSats. Its success helped show that small satellites built by students can last for years, and opened the way for the thousands of CubeSats launched since.
Status
Listed as working, but nobody reported hearing CO-57 on AMSAT in the last 30 days.
From reports filed on AMSAT, last 30 days.
Orbit
| Type | Low Earth orbit |
|---|---|
| Altitude | 806–820 km |
| Inclination | 98.7° |
| Period | 101.1 min |
| TLE epoch | 2026-10-28 11:46 UTC |
Orbital elements: CelesTrak, checked every 3 hours.
Questions about CO-57
- What is the CO-57 downlink frequency?
- CO-57 transmits on 437.490 MHz (AFSK 1k2).
- What is the CO-57 beacon frequency?
- The beacon is on 436.8475 MHz and 436.8487 MHz.
- Is CO-57 active?
- Listed as working, but nobody reported hearing CO-57 on AMSAT in the last 30 days.
- When does CO-57 pass over my location?
- Open CO-57 on the live map and enter your Maidenhead locator or use GPS: the tracker lists the passes of the next 24 hours with AOS, maximum elevation and LOS, and shifts the frequencies for Doppler.