The 230-foot rocket delivered the spacecraft larger than a double-decker bus to an orbit more than 22,000 miles over the equator.
The fifth-generation satellites, which were built by Boeing, provide downlink communication speeds of up to 50 megabits per second and uplink speeds of up to 5 megabits per second for customers on land, at sea or in the air, Inmarsat said in a press release.
"It's for passenger connectivity, so it's wifi services for passengers for web browsing, email, video downloads and uploads", said Michele Franci, Inmarsat's chief technology officer. "That is the background of Inmarsat, mobile applications, so this constellation, and the entire network around it, has been created to be optimized for mobile users".
Launch Time: 7:21 p.m.
They say the satellite has been loaded onto the rocket that's now at Launch Complex 39-A. Weather is near ideal for a launch from Kennedy Space Center this evening, with a 90-percent chance of favorable conditions. During that time, it appeared that the EchoStar launch would be SpaceX's last expendable mission. According to the company, such an attempt wasn't planned for Monday's flight "due to mission requirements".
The Inmarsat-5 satellite being loaded into the fairing of a Falcon 9.
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The satellite, which is the fourth satellite in Inmarsat's Global Xpress network, will be the heaviest load lofted by a Falcon 9 yet, Floridatoday.com reported on Sunday. "On ships, our biggest market today is in merchant shipping, and there it will provide a combination of operational services and crew welfare". "In maritime, our system is actually integrated". Powered by a couple of solar "wings", it will operate in the Ka-band and L-band spectrum.
SpaceX is about to launch a satellite into space.
SpaceX's Falcon 9 is tuning out to be a real work-horse. The company has not disclosed whether it will make another experimental attempt to recover the rocket's payload fairing. Inmarsat has an option for another future flight with SpaceX.
This particular satellite is one of the heaviest SpaceX has put into the sky.
The launch was actually suppose to take place with a Falcon Heavy.