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Mitsubishi Heavy IndustriesLaunch SuccessfulCommunicationsH-IIA 204
Launched 2021-12-22 15:32 UTCYoshinobu Launch Complex LP-1, Tanegashima Space Center, Japan
Success
Reached Geostationary Transfer Orbit
Worldwide
137th
orbital launch attempt in 2021
Mitsubishi Heavy Industries
2nd
launch this year
Yoshinobu Launch Complex LP-1
2nd
launch from this pad this year
Pad turnaround
57 d 13 h
since the pad's previous launch

Inmarsat-6 is the sixth generation of satellites for the London-based global mobile satellite communications operator Inmarsat. It consists of a dual mission to augment both L-band and Ka-band Global Xpress services.
Airbus Defence and Space has been awarded a contract by Inmarsat to design and develop the first two Inmarsat-6 (I-6) mobile communications satellites, creating the most versatile mobile services satellites in its fleet.
The two I-6 satellites are based on Airbus Defence and Space's Eurostar platform in its E3000e variant, which exclusively uses electric propulsion for orbit raising. The satellites take advantage of the reduction in mass that this electric propulsion technology enables for a dual payload mission, with an exceptionally large next generation digitally processed payload.
I-6 F1 and F2 both carry a large 9 m aperture L-band antenna and nine multibeam Ka-band antennas, and feature a high level of flexibility and connectivity. A new generation modular digital processor provides full routing flexibility over up to 8000 channels and dynamic power allocation to over 200 spot beams in L-band. Ka-band spot beams are steerable over the full Earth disk, with flexible channel to beam allocation.

Launch Provider
Commercial · Japan · Founded 1884 · President Seiji Izumisawa
Mitsubishi Heavy Industries, Ltd. is a Japanese multinational engineering, electrical equipment and electronics company headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group. MHI's products include aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, printing machines, ships and space launch vehicles. Through its defense-related activities, it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan.
Launches
59
Successful
57
97%
Upcoming
12
scheduled
·
Successful launch confirmed by Inmarsat
SwGustav
·
One day slip due to weather forecasts.
Cosmic_Penguin
·
T-0 confirmed
Nosu
·
Launch date and window announced.
Cosmic_Penguin
Height
53m
Diameter
4m
Liftoff thrust
2,260kN
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