HTV-1, known as the HTV Demonstration Flight or HTV Technical Demonstration Vehicle, was the first flight of the Japanese Space Agency H-II Transfer Vehicle, launched in September 2009 to resupply the International Space Station and support the JAXA Kibo module or Japanese Experiment Module .
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HTV-1 was launched on the maiden flight of the H-IIB launch vehicle.
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HTV-1 was successfully launched at 17:01:46 UTC on 10 September 2009, to the initial orbit of 199.
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On FD3, HTV-1 performed the demonstration tests of ISS proximity operation such as collision avoidance manoeuvre.
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HTV-1 was loaded with 199 items of discarded equipment and waste of 727.
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At 17:32, HTV-1 was released from SSRMS and began its planned maneuvers to leave the station proximity.
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HTV-1 gradually departed from the ISS orbit by performing several thruster burns and entered to its solo-flight mode.
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HTV-1 began the third and final de-orbit maneuver at 20:53 on 1 November 2009 as planned, while the spacecraft was passing over Central Asia.
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HTV-1 demo photographed from the Netherlands by astrophotographer Ralf Vandebergh.
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HTV-1 can be berthed on top, zenith, or bottom, nadir, of Harmony.
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