HTV-X3

HTV-X3 is the third flight of HTV-X, an uncrewed expendable cargo spacecraft to resupply International Space Station. It is planned to be launched in JFY2026.^[1]

HTV-X3

Mission type	ISS resupply
Operator	JAXA
Spacecraft properties
Spacecraft	HTV-X
Berthing at ISS
Berthing port	Harmony nadir
HTV-X ← HTV-X2 HTV-X4 →

Payload

In its unpressurised cargo section, HTV-X3 carries Multi-layer Acoustic & Conductive-grid Sensor (MACS), a technology demonstration of millimeter-sized orbital debris detection, co-developed by NASA and JAXA.^[2]