Mission type | Communication |
---|---|
Operator | JAXA/NICT |
COSPAR ID | 2008-007A |
SATCAT no. | 32500 |
Website | JAXA |
Mission duration | 5 years (design) Final: 11 years, 4 days |
Spacecraft properties | |
Bus | NX-G [1] |
Manufacturer | NEC |
Launch mass | 4,850 kilograms (10,690 lb) |
BOL mass | 2,750 kilograms (6,060 lb) |
Start of mission | |
Launch date | 23 February 2008, 08:55 UTC |
Rocket | H-IIA |
Launch site | Tanegashima Y1 |
Contractor | Mitsubishi |
End of mission | |
Disposal | Decommissioned |
Deactivated | 27 February 2019, 06:54 UTC |
Orbital parameters | |
Reference system | Geocentric |
Regime | Geostationary |
Longitude | 143° East |
Semi-major axis | 42,164 kilometres (26,199 mi) |
Perigee altitude | 35,784.1 kilometres (22,235.2 mi) |
Apogee altitude | 35,803.8 kilometres (22,247.4 mi) |
Inclination | 0.2 ° |
Period | 1,436.1 minutes |
Epoch | 00:00:00 UTC 2016-08-31 [2] |
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]
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