QZS-1R is a Japanese navigation satellite consisting part of the Quasi-Zenith Satellite System (QZSS). QZS-1R will replace the QZS-1 (Michibiki-1) satellite launched in September 2010. QZS-1 has a design life of ten years. As QZS-1 is 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 will be capable of transmitting in the MADOCA signal, reaching operational capacity.[2]
| 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 | 3 years and 26 days (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 |
Satellite
editQZS-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]
Launch
editQZS-1R was launched on 26 October 2021 by Mitsubishi Heavy Industries.[4]
References
edit- ^ "みちびき初号機後継機の概要" (in Japanese). Cabinet Office (Japan). Retrieved 26 October 2021.
- ^ a b "種子島で内閣府担当者が語る、初号機後継機打上げへの道のり" (in Japanese). Cabinet Office (Japan). 21 October 2021. Retrieved 26 October 2021.
- ^ "MADOCA Products". JAXA. 3 August 2020. Retrieved 26 October 2021.
- ^ a b Matumura, Takehiro (25 October 2021). "H-IIAロケット44号機の打ち上げは10月26日に1日延期「みちびき」初号機後継機を搭載". 宇宙（そら）へのポータルサイトsorae.jp (in Japanese). Retrieved 26 October 2021.
- ^ "打ち上げ間近のみちびき初号機後継機。開発者に聞く" (in Japanese). Cabinet Office (Japan). Retrieved 26 October 2021.
External links
edit- Special website of launch (in Japanese)
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