QZS-1R
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| Names | QZS-1 Replacement Michibiki-1R |
|---|---|
| Mission type | Navigation |
| Operator | Cabinet Office (Japan) (CAO) |
| COSPAR ID | 2021-096A |
| SATCAT no. | 49336 |
| Website | https://qzss.go.jp/ |
| Mission duration | 4 years, 6 months and 1 day (in progress) |
| Spacecraft properties | |
| Bus | DS2000 |
| Manufacturer | Mitsubishi Electric |
| Launch mass | 4,100 kg (9,000 lb) [1] |
| Dimensions | 5.4 × 2.9 × 2.9 m (17.7 × 9.5 × 9.5 ft) |
| Power | 6.3 kW |
| Start of mission | |
| Launch date | 26 October 2021, 02:19:37 UTC |
| Rocket | H-IIA 202 (F-44) |
| Launch site | Tanegashima, Yoshinobu LA-Y1 |
| Contractor | Mitsubishi Heavy Industries |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Medium Earth orbit |
| Perigee altitude | 32,627.7 km |
| Apogee altitude | 38,956.6 km |
| Inclination | 37.3° |
| Period | 1,436 minutes |
QZS-1R is a Japanese navigation satellite consisting part of the Quasi-Zenith Satellite System (QZSS). QZS-1R replaced the QZS-1 (Michibiki-1) satellite launched in September 2010. QZS-1 had a design life of ten years. As QZS-1 was an experimental satellite, it did not broadcast the MADOCA (Multi-GNSS Advanced Demonstration tool for Orbit and Clock Analysis) signal, which can be used for centimeter-order navigation.[2][3] With the launch of QZS-1R, all satellites of QZSS are capable of transmitting in the MADOCA signal, reaching operational capacity.[2]
QZS-1R is the fourth operational Quasi-Zenith Satellite to be launched. The design of the satellite is based on QZS-2 and 4, with minor differences such as an increase in the number of temperature sensors on board.[4][5]
