Object H

Description

Object H is the eighth of eight simultaneously launched satellites on Kakushin Rising, a small JAXA-manifested rideshare. These separate spacecraft included educational small sats, an ocean monitoring satellite, a demonstration satellite for ultra-small multispectral cameras, and a deployable antenna that can be packed tightly using origami folding techniques and unfurled to 25 times its size.

WASEDA-SAT-ZERO-II is a 1U CubeSat developed by Waseda University's Miyashita Laboratory in Japan. It is a technology demonstrator for 3D-printed satellites. It will be used to conduct experiments regarding deployment of membrane surfaces. WASEDA-SAT-ZERO-II is a re-flight of an identical satellite lost during the RAISE-3 launch in October 2022. The chassis is printed from metal as a single, integral 1U structure, eliminating all fixing screws to save weight and reduce the risk of loose debris. It also deploys a membrane drag chute intended to lower the satellite's orbit for de-orbiting.

FSI-SAT2 is a 1U educational CubeSat developed by Japan's Future Science Institute. It is designed to test a low-cost, multi-spectral Earth imaging camera that captures Earth imagery across multiple light spectrums (Blue, Green, Red, and Near-Infrared). It also boasts a DTMF-triggered SSTV (Slow-Scan Television) system for amateur radio operators. Operators can trigger the satellite to downlink SSTV audio signals that can be decoded into photographs of the Earth using free PC software.

OrigamiSat-2 (Origami Reflect Array Antenna Demonstration Satellite 2) is a Japanese 3U CubeSat developed by the Tokyo University of Science to demonstrate an ultra-high-gain deployable reflect array antenna based on an origami-inspired structural concept. The mission focuses on validating a compact, lightweight antenna system capable of achieving significantly increased gain through in-orbit deployment. The satellite tests a two-layer membrane structure that unfolds from a highly constrained launch configuration into a large-area reflect array, supporting future high-data-rate communications and advanced small satellite architectures.

The antenna system consists of a two-layer deployable membrane with integrated antenna elements. This configuration allows precise shaping and controlled expansion while maintaining low mass and high packing efficiency. The origami-based folding technique enables the structure to stow within a standard CubeSat volume and deploy reliably in orbit.

Mono-Nikko is a Japanese 3U CubeSat satellite developed by Di-Nikko Engineering Co., Ltd. to test an intelligent battery anomaly detection system in orbit. It’s principal mission is to perform ab in-orbit demonstration of an intelligent power supply unit designed for micro-spacecraft. It captures real-time data from spacecraft batteries which allows it to quickly identify deterioration and abnormal patterns in harsh space environments.

The mission objective is to acquire detailed status data from onboard batteries and process this data to identify early signs of performance decline or abnormal behavior. By enabling in-orbit diagnostics rather than relying solely on pre-launch testing or ground-based assumptions, the system aims to improve reliability and operational safety for small satellite missions, where power subsystem failures are a leading risk factor.

The system is designed to be compact and adaptable for CubeSat-class platforms, emphasizing low power consumption and autonomous operation. The payload demonstrates embedded algorithms for anomaly detection, likely incorporating threshold-based monitoring and potentially more advanced diagnostic logic tailored to battery performance characteristics in space environments.

ARICA 2 (AGU Remote Innovative CubeSat Alert system-2) is a 2U CubeSat developed by Aoyama Gakuin University (AGU) in Japan. Its primary mission is to demonstrate a real-time alert system for sudden astronomical events like gamma-ray bursts (GRBs) using commercial satellite networks. ARICA-2 carries larger, upgraded gamma-ray detectors to catch these sudden, brief bursts of cosmic energy. Instead of waiting to pass over a single university ground station, the satellite immediately relays burst locations and times over commercial networks (Iridium and Globalstar) to allow telescopes worldwide to quickly trace them.

PRELUDE (Precursory Electric Field Observation CubeSat Demonstrator) is a Japanese 6U CubeSat developed to investigate ionospheric disturbances as potential precursors to earthquakes, with a focus on hybrid electric field and plasma sensing technologies. The mission aims to investigate the mechanisms behind earthquake precursor phenomena by observing ionospheric fluctuations from orbit. PRELUDE targets very low frequency (VLF) electromagnetic signals, which may be affected by seismic activity. In parallel, it measures total electron content (TEC) using an onboard GNSS receiver to detect variations in electron density, a phenomenon associated with ionospheric disturbances potentially linked to tectonic processes. The satellite is also intended as a pathfinder for future dense constellations enabling tighter spatial and temporal observation of such effects.

PRELUDE’s payload includes instruments for measuring VLF signal intensity, electron density, and electron temperature. The observations are based on the principle that electromagnetic wave penetration can induce charge distribution deviations in plasma, generating electric fields. Differences in mass between electrons and ions can further lead to charge separation effects, which are detectable as variations in plasma parameters.

MAGNARO 1 & 2 are a pair of small satellites developed by the Nagoya University to demonstrat formation flying techniques.

This mission is launched as a 3U CubeSat sized package of 4.4 kg that splits into two satellites after deployment. One satellite is 2U and the other is 1U in size. They are connected by magnetism until their separation. After separating, they will maintain formation flying between 2 km to 500 km distance from each other. Amateur radio operators will be able to use these satellites as repeaters for long-range communication.

MAGNARO was launched in October 2022 on an shared Epsilon (2) CLPS rocket but failed to reach orbit.

KOSEN 2 is a 2U CubeSat satellite developed by a partnership between the National Institute of Technology (KOSEN), Yonago College, Gunma College, and other educational bodies. It features a deployable Yagi-style directional antenna which extends after deployment. It is designed to study deformation of the Earth’s crust under the sea floor. It makes use of dual reaction wheels to maintain attitude control. It takes observations using a combination of fish-eye camera lenses and magnetic sensors. It was launched in October 2022 on an shared Epsilon (2) CLPS rocket but failed to reach orbit.

This was Electron’s 87th mission, Rocket Lab’s 87th mission, and the 93rd orbital launch attempt of 2026.