Mission Status

March 2015

The GPM Core Observatory successfully launched from Tanegashima Space Center, Japan, on February 27th, 2014 at 1:37pm EST. It is currently in orbit, and data from the mission is available for the public to download from a variety of sources and formats which are outlined on the PMM Data Access page.

Mission Updates

The liquid hydrogen and liquid oxygen tanks of the H-IIA launch vehicle first and second stages have been fully loaded. Checks of the radio frequency system between the H-IIA and ground stations have been completed.
Solar array deployment begins. GPM has two arrays to power the spacecraft because of its orbit. It circles the Earth at an angle slanted 65 degrees up from the equator. This means it does not cross the equator at the same time every day – an advantage for monitoring rainfall at different times of day and night.
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A second scheduled test of the guidance and control system on the H-IIA launch vehicle has been completed to confirm that all devices for flight attitude control are working as expected. NASA Television has begun coverage of the GPM Core Observatory launch originating from Goddard Space Flight Center in Greenbelt, Md. Watch online at: http://www.nasa.gov/nasatv
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The GPM Core Observatory has successfully deployed its solar arrays and is stable and pointed at the sun. GPM’s solar arrays are pointed at the sun and collecting power. We have confirmation that the arrays are rotating properly, charging the batteries and providing power to the spacecraft.
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The launch of the GPM Core Observatory is proceeding toward launch at Tanegashima Space Center, Japan. Final checks have been made for the operational conditions of the H-IIA launch vehicle, satellites, launch facilities, tracking and control systems, and weather conditions. The process of loading propellant, such as liquid oxygen and liquid hydrogen, into the rocket has begun. Terminal countdown operations also begun. Access to the launch pad is now restricted within a radius of 400 meters.
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Thu, 2014-02-27 12:40 p.m. EST. The green light has been given to the X-60 minutes countdown operation for launch of the NASA-JAXA GPM Core Observatory from Tanegashima Space Center, Japan. Launch is scheduled for 3:37 a.m. JST (Feb. 27 at 1:37 p.m. EST).
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The GPM Core Observatory has received a green light for launch! On the morning of Feb. 26 (Japan time) at Tanegashima Space Center, chief officers from Mitsubishi Heavy Industries, Ltd., the Japan Aerospace Exploration Agency (JAXA) and NASA reviewed the readiness of the Global Precipitation Measurement (GPM) Core Observatory for launch on an H-IIA rocket on Feb. 28 (Japan time). All launch vehicle and launch facility actions relevant to the GPM launch were reported complete. The review panel...
Launch services provider Mitsubishi Heavy Industries (MHI) performed checks on the propulsion and electrical systems on the H-IIA rocket that will carry the GPM Core Observatory into space.
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On Tuesday, Feb. 25 (Japan time) at the Tanegashima Space Center, Japan, pyrotechnics were connected on the H-IIA launch vehicle that will carry the NASA-JAXA Global Precipitation Measurement (GPM) Core Observatory into space. In addition, the attitude control system that will control the second stage of the launch vehicle was fueled.
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Preparations for the launch of the NASA-JAXA Global Precipitation Measurement (GPM) Core Observatory continue on schedule at Tanegashima Space Center, Japan. Launch is scheduled for Thursday, Feb. 27 U.S. time / Friday, Feb. 28 Japan time.vThe Core Observatory is now encapsulated in the fairing and installed on the second stage of the H-IIA rocket in the Vehicle Assembly Building. On Feb. 19 and 20 (JST), the Core Observatory and the launch vehicle underwent the final functional test for two...

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