From the Spaceflight 101 article Experimental Launch of World’s Smallest Orbital Space Rocket ends in Failure:
SS-520-4 lifted off from the Uchinoura Space Center in Japan’s Kagoshima prefecture at 8:33 a.m. local time on Sunday, 23:33 UTC on Saturday on a one-off demonstration mission, aiming to put the TRICOM-1 CubeSat into an elliptical orbit around Earth. The small launcher quickly vanished from view after an on-time blastoff with a thrust eclipsing the rocket’s initial mass by a factor of seven.
The rocket’s climb to orbit was expected to take seven and a half minutes, however, all telemetry from the ascending launch vehicle was lost around 20 seconds into the planned 31-second firing of the rocket’s first stage. Tracking of the rocket showed the first stage separated from the second stage, reaching a peak altitude just shy of 200 Kilometers before both fell into the Pacific Ocean in a closed zone south-east of the launch site.
Are there plans to try again?
above: SS-520-4 rocket ready for launch. From here, Photo: JAXA
above: SS-520-4 rocket. From here, Image: JAXA
SS-520-4 is a three-stage solid-fueled rocket standing 9.54 meters tall, measuring 52 centimeters in diameter and weighing in at 2,600 Kilograms – smaller and lighter than any previous ground-based orbital launch vehicle. It is based on the SS-520 sounding rocket design, modified with a small third stage tasked with injecting a payload into Low Earth Orbit.
above: TRICOM-1 in Launch Configuration. From here, Photo: JAXA
above: Person with TRICOM-1 for scale - in this case Professor Hiroto Habu of the Japan Aerospace Exploration Agency. Image from here.