ERG (satellite)
| ERG, SPRINT B, Arase | |
|---|---|
| Type: | Research satellite |
| Country: |
 Japan
|
| Operator: | JAXA |
| COSPAR-ID : | 2016-080A |
| Mission dates | |
| Dimensions: | 350 kg |
| Size: | 1.5 × 1.5 × 2.7 m (at the start) |
| Begin: | December 20, 2016 at 11:00 UTC |
| Starting place: | Uchinoura Space Center |
| Launcher: | Epsilon-2 |
| Orbit data | |
| Rotation time : | 561 min |
| Orbit inclination : | 31.4 ° |
| Apogee height : | 32135 km |
| Perigee height : | 231 km |
ERG (Exploration of energization and Radiation in Geospace) is a research satellite of the Japanese JAXA .
It was launched into highly elliptical orbit on December 20, 2016 at 11:00 UTC with an Epsilon-2 launcher from the Uchinoura Space Center rocket launch site in Kimotsuki . After reaching its orbit, it was renamed Arase ( Japanese あ ら せ , after a river in Kimotsuki).
The spin-stabilized satellite is equipped with various scientific devices and is intended to explore the Van Allen Belt . In addition, he is with the ERG with sensors such as the Extremely high-energy electron experiments (XEP-e), High-energy electron experiments (HEP-e), Medium-energy particle experiments - electron analyzer (MEP-e) Low-energy particle experiments - electron analyzer (LEP-e), Medium-energy particle experiments - ion mass analyzer (MEP-i), Low-energy particle experiments - ion mass analyzer (LEP-i), Magnetic field experiment (MGF), Plasma Wave Experiment (PWE) and the software-type wave particle interaction analyzer (S-WPIA), which should provide information about plasma , particles and electromagnetic fields . At launch, the size of the satellite was 1.5 × 1.5 × 1.7 m plus 1 m for the antennas. In orbit, the four solar cell surfaces unfolded with a span of 6.0 and 5.2 meters respectively. In addition, various antennas for the measuring instruments with a length of 5 and 15 m were extended. The satellite uses the same satellite bus as was used on the first SPRINT Hisaki satellite .
Instruments
Four electron sensors (LEP-e, MEP-e, HEP-e and XEP-e) and two ion sensors (LEP-i and MEP-i) are available for particle analysis. The electron sensors can measure electrons from 10 eV to 20 MeV, while ion sensors can measure ions from 12 eV / q to 180 keV / q with mass discrimination. The energy ranges of the detectors are designed to overlap each other, providing a seamless energy spectrum. The measuring range of XEP-e extends from 0.2 to 20 MeV and that of HEP-e from 0.03 to 2 MeV. The instruments for plasma and electromagnetic fields observe electric fields in the frequency range of up to 10 MHz and the magnetic field in the frequency range from a few Hz to 20 kHz. Electric fields are turned tip to tip by two pairs of wire dipole antennas about 30 m long. High-frequency magnetic fields are measured by two orthogonal search coils.
Web links
Individual evidence
- ↑ n2yo.com: SPRINT-B (ERG) Satellite details 2016-080A NORAD 41896 , accessed December 25, 2016
- ↑ Exploration of energization and Radiation in Geospace (ERG) Solar Array Paddles Deployment and Nickname Decided. JAXA, December 20, 2016, accessed March 19, 2017 .
- ↑ JAXA: ERG press kit , accessed on December 26, 2016
- ↑ isas.jaxa.jp: ERG | Spacecraft | ISAS , accessed December 26, 2016
- ↑ der-orion.com: Epsilon in use for the second time , accessed on December 25, 2016
- ↑ eoPortal: ERG - eoPortal Directory - Satellite Missions , accessed on December 26, 2016
- ↑ Masafumi Hirahara: Plasma / particle instruments and Japan- - Taiwan collaboration for the Geospace magnetosphere / ionosphere explorations ( Memento of the original from March 26, 2009 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice.
