XI-IV

XI-IV, CubeSat-OSCAR-57 (CO-57)
Type:	Training satellite , amateur radio satellite
Country:	Japan
Operator:	Tokyo University
COSPAR-ID :	2003-031J
Mission dates
Dimensions:	1 kg
Size:	10 cm × 10 cm × 10 cm
Begin:	June 30, 2003
Starting place:	Plesetsk Cosmodrome
Launcher:	Rockot
Status:	active
Orbit data
Rotation time :	101.3 min
Orbit inclination :	98.7 °
Apogee height :	833.6 km
Perigee height :	819.5 km

XI-IV , (SAI VIER) is a Japanese education and technology testing satellite and an amateur radio satellite . XI stands for X-factor Investigator. It is the fourth satellite in this series, although the first three prototypes were not launched. After a successful start, the OSCAR number 57 was assigned and the satellite also bears the designation Cube-OSCAR-57 (CO-57).

construction

XI-IV was designed and built at Tokyo University . It is Picosatellit based on the 1U CubeSat platform. Standard components were used for the construction . The satellite carries a CMOS camera .

mission

The satellite was launched on June 30, 2003 with the Russian rocket Rockot together with 8 other satellites from the Plesetsk Cosmodrome in Russia.

Frequencies

• 436.848 MHz Beacon CW 50 wpm , power 100 mW, half-wave dipole
• 437.490 MHz Downlink FM AFSK AX.25, 1k2, power 800 mW, half-wave dipole
• Call Sign: JQ1YCW

Web links

• Description of the satellite

Individual evidence

1. ↑ Ciprian Sufitchi: CUBESAT XI-IV. December 29, 2018, accessed December 29, 2018 .