Partially False: JAXA's H3 Rocket Did Succeed — But It Carried Two Satellites, Not Six
“JAXA president Hiroshi Yamakawa stated the H3 rocket performed according to plan and successfully placed the second stage into its intended orbit before releasing all six satellites”
The argument in brief
A claim attributed to JAXA president Hiroshi Yamakawa says the H3 rocket performed as planned and released six satellites into orbit. The success part is true — the H3's second test flight on February 17, 2024 went nominally — but the rocket carried two small satellites, not six. Multiple JAXA official documents and independent reports confirm only CE-SAT-1E and TIRSAT were aboard.
Why it spread
Space launches are exciting, and most people have no reason to memorize satellite manifests. Adding a detail like 'six satellites' makes a success story sound more dramatic and significant, so it travels further. Because the core claim — that the H3 succeeded and Yamakawa praised it — is true, readers had little reason to question the specific numbers attached to it.
A claim circulating online states that JAXA president Hiroshi Yamakawa confirmed the H3 rocket performed according to plan and successfully deployed six satellites into their intended orbit. The verdict is partially false. The mission success is real, but the satellite count is wrong — and that error changes the picture significantly.
JAXA's official press release for H3 Test Flight No. 2 (H3-TF2), published February 17, 2024, confirms the rocket performed nominally and placed its payloads into the intended orbit. Hiroshi Yamakawa did express satisfaction with the outcome. So far, so accurate.
Here is where the claim falls apart. According to both the JAXA press release and independent reporting from Space News and NHK World, H3-TF2 carried exactly two small satellites — CE-SAT-1E and TIRSAT — not six. JAXA's own mission documentation for all confirmed H3 flights lists no configuration involving six satellites. The number appears to have been invented or confused with another mission entirely.
It is also worth noting context: the first H3 test flight, in March 2023, failed completely when the second stage engine did not ignite, destroying the rocket and its payload, the ALOS-3 Earth observation satellite. There is no version of any H3 flight where all elements of this claim — a successful second stage and six satellites released — are simultaneously true.
The core facts here are not in dispute across any credible source. H3-TF2 was a genuine and important success for Japan's space program after a painful first failure. Inflating the payload count does not make that story more impressive — it just makes it wrong. When you see specific numbers attached to space mission claims, it is always worth checking the original mission manifest before sharing.
Sources
- JAXA Official Press Release - H3 Launch Vehicle Test Flight No. 2
JAXA confirmed H3 Test Flight No. 2 (H3-TF2) on February 17, 2024 was successful, with the rocket performing nominally and placing payloads into intended orbit. However, the mission carried two small satellites (CE-SAT-1E and TIRSAT), not six satellites.
- JAXA H3 Launch Vehicle Test Flight No. 1 Failure Report
H3 Test Flight No. 1 (March 7, 2023) failed when the second stage engine did not ignite, resulting in the destruction of the rocket and its payload (ALOS-3 satellite). The second stage was not successfully placed into orbit.
- Space News - H3 rocket successfully completes second test flight
H3 TF2 carried two small satellites as secondary payloads, not six. JAXA president Hiroshi Yamakawa expressed satisfaction with the successful mission but the payload count in the claim does not match reported facts.
- NHK World - Japan's H3 rocket successfully launches on second test flight
Reports confirm H3 TF2 successfully deployed its payloads, but list only two small satellites aboard, contradicting the claim of six satellites.
- JAXA H3 Launch Vehicle Overview
JAXA's official mission documentation for H3 test flights does not reference a configuration carrying six satellites on any confirmed H3 flight to date.