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H3-24 | Martian Moons eXploration (MMX)

NET: 2026-10-19T19:41:03Z
Status: Go for Launch
Provider: Mitsubishi Heavy Industries
Pad: Yoshinobu Launch Complex LP-2
Location: Tanegashima Space Center, Japan
Launch Image
T+00:00:00:00

Mission: Martian Moons eXploration (MMX)

MMX is a Japanese scientific mission to land on Phobos, one of the two moons of Mars, to collect samples before bringing them back to Earth. The mission includes a small French/German rover to explore the surface of Phobos.

Rocket: H3-24

Rocket image

The H3 Launch Vehicle is a Japanese expendable launch system. Each H3 booster configuration has a two-digit and a letter designation that indicates the features of that configuration. The first digit represents the number of LE-9 engines on the main stage, either "2" or "3". The second digit indicates the number of SRB-3 solid rocket boosters attached to the base of the rocket, and can be "0", "2" or "4". All layouts of solid boosters are symmetrical. The letter in the end shows the length of the payload fairing, either short "S" or long "L". For example, an H3-24L has two engines, four solid rocket boosters, and a long fairing, whereas an H3-30S has three engines, no solid rocket boosters, and a short fairing.

Family: H3,
Variant: 24
Successful launches 1
Failed launches 0
Fastest Turnaround

Timeline

Time Event Description
P0D Liftoff First upwards movement of the rocket
PT1M56S Boosters Separation Separation of the side boosters
PT1M58S Boosters Separation Separation of the side boosters
PT3M17S Fairing Separation Separation of the payload fairing
PT4M52S MECO Cut-off of the main engine
PT4M59S Stage 2 Separation Separation of the second stage from the first
PT5M12S SES-1 First start of the second engine
PT10M40S SECO-1 First cut-off of the second engine
PT1H3M57S SES-2 Second start of the second engine
PT1H10M21S SECO-2 Second cut-off of the second engine
PT1H11M12S Payload Separation Final deployment of the payload from the rocket