Defunct Japanese communication satellite
WINDS (Kizuna)Launch of WINDS (Kizuna) on H-IIA Flight 14. |
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Mission type | Communication |
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Operator | JAXA/NICT |
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COSPAR ID | 2008-007A |
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SATCAT no. | 32500 |
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Website | JAXA |
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Mission duration | 5 years (design) Final: 11 years, 4 days |
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Spacecraft properties |
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Bus | NX-G[1] |
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Manufacturer | NEC |
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Launch mass | 4,850 kilograms (10,690 lb) |
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BOL mass | 2,750 kilograms (6,060 lb) |
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Start of mission |
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Launch date | 23 February 2008, 08:55 (2008-02-23UTC08:55Z) UTC |
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Rocket | H-IIA |
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Launch site | Tanegashima Y1 |
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Contractor | Mitsubishi |
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End of mission |
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Disposal | Decommissioned |
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Deactivated | 27 February 2019, 06:54 (2019-02-27UTC06:55Z) UTC |
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Orbital parameters |
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Reference system | Geocentric |
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Regime | Geostationary |
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Longitude | 143° East |
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Semi-major axis | 42,164 kilometres (26,199 mi) |
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Perigee altitude | 35,784.1 kilometres (22,235.2 mi) |
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Apogee altitude | 35,803.8 kilometres (22,247.4 mi) |
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Inclination | 0.2 ° |
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Period | 1,436.1 minutes |
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Epoch | 00:00:00 UTC 2016-08-31[2] |
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WINDS (Wideband InterNetworking engineering test and Demonstration Satellite, also known as Kizuna), was a Japanese communication satellite. Launch was originally scheduled for 2007. The launch date was eventually set for 15 February 2008, but a problem detected in a second stage maneuvering thruster delayed it to 23 February. Lift-off occurred at 08:55 GMT on 23 February from Tanegashima Space Center, and the satellite separated from its H-IIA carrier rocket into a Geosynchronous transfer orbit at 09:23. WINDS was used to relay the internet to Japanese homes and businesses through Ka-Band signals. It also tested technologies that would be utilised by future Japanese communication satellites. A part of Japan's i-Space program, WINDS was operated by JAXA and NICT.
Prior to launch, a JAXA brochure claimed that WINDS will be able to provide 155 Mbit/s download speeds to home users with 45-centimetre diameter satellite dishes, while providing industrial users via 5-metre diameter dishes with 1.2 Gbit/s speeds.[3]
WINDS had a launch mass of 4,850 kg, reducing to a mass of around 2,750 kg after thrusting to its operational orbit. The spacecraft is 8 m x 3 m x 2 m in size, and its solar panels have a span of 21.5 metres. It has three-axis stabilisation, and a design life expectancy of five years.
The satellite became inoperable due to communications failure on 9 February 2019,[4] and it was decommissioned by the transmission of a deactivation command at 06:54 GMT on 27 February 2019.[5]
See also
References
- ^ Kallender-Umezu, Paul (24 November 2014). "Japan's NEC Looks To Expand Commercial Market Footprint". Retrieved 31 August 2016.
- ^ "WINDS (KIZUNA)". N2YO.com. 31 August 2016. Archived from the original on 31 August 2016. Retrieved 31 August 2016.
- ^ "JAXA - 超高速インターネット衛星―WINDS" (PDF). JAXA. 26 December 2007. Archived from the original (PDF) on 28 February 2008. Retrieved 23 February 2008.
- ^ 「きずな」(WINDS)の運用状況について (in Japanese). JAXA. 13 February 2019. Retrieved 6 March 2019.
- ^ 超高速インターネット衛星「きずな」(WINDS)の運用終了について (in Japanese). JAXA. 1 March 2019. Retrieved 6 March 2019.
External links
- JAXA website about WINDS
- LIVE COVERAGE: H-IIA KIZUNA (WINDS) Launch (updated 1:20 GMT) 1:20 GMT (8:20 pm EST): T-6 hours. Fueling of the H-IIA has commenced
- Italics indicates projects in development.
- Symbol † indicates failed projects.
Strikethrough lines indicate cancelled projects. |
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National space agencies | |
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Joint development partners | |
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Past | - BS
- Kakehashi
- Kirari
- Kizuna
- Kodama
- MBSat
- N-STAR
- Sakura (1
- 2a
- 2b
- 3a
- 3b)
- Yuri
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Active | |
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Future | |
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Past | - Akebono
- Daichi
- Denpa
- Fuyo-1
- Jikiken
- Kyokko
- Midori
- Momo
- Ohozora
- Taiyo
- TRMM1
- Ume
- Geotail1
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Active | |
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Future | |
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Engineering tests |
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Past | |
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Active | |
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Future | - BEAK
- ETS-IX
- G-SATELLITE
- SERVIS-3
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Past | |
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Active | - CUTE
- Fuji-3
- Hitomi
- Hodoyoshi
- Horyu
- Kiseki
- PROITERES
- Raijin
- Raijin-2
- SEEDS
- SOCRATES
- XI
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Future | |
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January | |
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February | |
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March | |
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April | |
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May | |
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June | |
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July | |
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August | |
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September | |
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October | |
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November | |
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December | |
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Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses). |
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