ETS-VIII

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Kiku 8

Mission type| Communications
Technology
Operator| JAXA
NICT
NTT
COSPAR ID| 2006-059A
SATCAT no.| 29656
Website| www.jaxa.jp/projects/sat/ets8/index_e.html
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 (2006-12-18UTC06:32Z) 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 (2017-01-11)
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]

JAXA Engineering Test Satellite ETS-VIII (Kiku 8) was 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 was to enable satellite communications with small terminals. Unlike the Iridium satellites for mobile communication, ETS-VIII was positioned at GEO. However to fulfill the task, it was essential that the satellite carried two very large antennas. It was the first use of the 204 configuration (four strap-on boosters) of the H-IIA launch vehicle.

## Timetable

[edit]

* 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. [1]Archived 2007-01-02 at the Wayback Machine
* January 9, 2007: GEO orbit injection. [2] Archived 2007-02-19 at the Wayback Machine
* May 9, 2007: The satellite switched to normal operation phase. [3]
* January 10, 2017: Decommissioned.[3]

## References

[edit]

1. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 30 October 2013.
2. ^ Peat, Chris (29 October 2013). "ETS 8 - Orbit". Heavens Above. Retrieved 30 October 2013.
3. ^ 「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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