Japan has successfully launched a back-up spy satellite, its aerospace agency says, after cancelling an earlier lift-off due to bad weather.
Tokyo put spy satellites into operation in the early 2000s after its erratic neighbour North Korea fired a mid-range ballistic missile over the Japanese mainland and into the western Pacific in 1998.
The Japan Aerospace Exploration Agency (JAXA) and Mitsubishi Heavy Industries delayed Thursday's planned launch of the H-2A rocket from Tanegashima Space Centre in southwestern Japan, due to the possibility of lightning during lift-off.
The launch on Sunday was successful, JAXA and Mitsubishi Heavy said, adding: "We confirmed the rocket launched normally."
Four Japanese intelligence satellites are currently in orbit - two optical satellites and two radar satellites.
The backup satellite will supplement the two radar satellites, a government official said earlier.
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