ETS-VIII
JAXA Engineering Test Satellite ETS-VIII (Kiku 8) is the eighth technology test satellite in a series which started with ETS-1 in 1975 by NASDA. It was launched with the H-2A on December 18, 2006. ETS-VIII was developed by JAXA in cooperation with NICT and NTT. The aim of ETS-VIII is to enable satellite communications with small terminals. Unlike the Iridium satellites for mobile communication, ETS-VIII is positioned at GEO. However to fulfill the task the satellite must carry two very large antennas. It was the first use of the 204 configuration (four strap-on boosters) of the H-IIA launch vehicle.
| Mission type | Communications Technology |
|---|---|
| Operator | JAXA NICT NTT |
| COSPAR ID | 2006-059A |
| SATCAT no. | 29656 |
| Website | www |
| Mission duration | 10 years |
| Spacecraft properties | |
| Bus | DS-2000 |
| Manufacturer | Mitsubishi Electric |
| Launch mass | 5,800 kilograms (12,800 lb) |
| Start of mission | |
| Launch date | 18 December 2006, 06:32 UTC[1] |
| Rocket | H-IIA 204 |
| Launch site | Tanegashima Yoshinobu 1 |
| Contractor | Mitsubishi |
| Entered service | 9 May 2007 |
| End of mission | |
| Deactivated | 10 January 2017 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 145.7° east |
| Semi-major axis | 42,163.77 kilometres (26,199.35 mi) |
| Eccentricity | 0.0005611 |
| Perigee altitude | 35,769 kilometres (22,226 mi) |
| Apogee altitude | 35,816 kilometres (22,255 mi) |
| Inclination | 3.04 degrees |
| Period | 23.93 hours |
| RAAN | 68.56 degrees |
| Argument of perigee | 138.47 degrees |
| Epoch | 29 October 2013, 19:34:27 UTC[2] |
Timetable
- December 20, 2000: Launch of LDREX, a demonstration of the large antenna reflector deployment, aboard Ariane 5. Deployment failed.
- October 14, 2006 Launch of LDREX-2 with the Ariane 5, model antenna deployed successfully.
- December 18, 2006: ETS-VIII was launched aboard H-IIA.
- December 26, 2006 Both antennas were deployed.
- January 9, 2007 GEO orbit injection.
- May 9, 2007 The satellite switched to normal operation phase.
- January 10, 2017: Decommissioned.[3]
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References
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 30 October 2013.
- Peat, Chris (29 October 2013). "ETS 8 - Orbit". Heavens Above. Retrieved 30 October 2013.
- 「きく8号」の運用終了について (in Japanese). JAXA. January 11, 2017. Retrieved January 12, 2017.
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