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Kiku 8
Spacecraft properties
Mission type	Communications Technology
Operator	JAXA NICT NTT
COSPAR ID	2006-059A 👁 Edit this at Wikidata
SATCAT no.	29656
Website	www.jaxa.jp/projects/sat/ets8/index_e.html
Mission duration	10 years
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]

^ 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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