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Hanada Lab (Spacecraft Dynamics)
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The lab explores the motion of space debris and satellites using mechanics.
AboutAbout the lab
Can humanity continue space development as it is now?
The Spacecraft Dynamics Lab conducts research on space debris, orbit and attitude estimation and control, optical observation, and microsatellites.
Applying astrodynamics to the problem of space debris (also called space junk), the lab develops tools to evaluate the stability of debris distributions and the effectiveness of measures for preventing debris generation and remediating the orbital environment.
The lab also works on observation planning to efficiently discover unknown debris, and on algorithms to detect moving artificial objects in captured images.
Students lead the research and development of the microsatellite “Q-Li,” aiming to establish a technique that works backward from the light curve, which represents an object's brightness over time, to estimate the object's motion and changes.
Key terms
- Space debris
- Also called space junk: waste material in outer space. Fragments produced by satellite breakup incidents have also been reported.
- Light curve
- A representation of an object's brightness as a function of time. The object's motion and changes are estimated backward from it.
- NASA Standard Breakup Model
- A model of fragment characteristics that NASA created from the results of satellite impact fragmentation experiments.
NewsLab news
An Assistant Professor's paper was accepted by Journal of Guidance, Control, and Dynamics
An Assistant Professor's paper was accepted by Advances in Space Research
An Assistant Professor's paper was accepted by Journal of Space Safety Engineering
A doctoral student received the COSPAR Outstanding Paper Award for Young Scientists
ResearchResearch themes
The lab conducts research on space debris, estimation and control of spacecraft orbits and attitude, optical observation, and microsatellites. The lab's research page lists two main themes: space debris, and control and estimation.
*Illustrative imageSatellite Impact Fragmentation Experiments
NASA conducted impact fragmentation experiments on satellites built with 1960s technology and created the NASA Standard Breakup Model, which describes the characteristics of the fragments. However, recent satellite breakup incidents have produced reports of fragments that this model cannot explain.
*Illustrative imageEstimating the State of Space Objects from Light Curves
The lab studies how to estimate the state of a spacecraft using information obtained from sources such as optical observation. Here, the state includes not only attitude but also the spacecraft's shape and other properties.
MembersFaculty
Members of the Spacecraft Dynamics Lab are faculty, staff, visiting researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorToshiya Hanada
- Assistant ProfessorYasuhiro Yoshimura
- Assistant ProfessorYasuhisa Shinmoto
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “ISS-38 Nanosatellites deployment (b)” NASA / Public domain (cropped)
- Satellite Impact Fragmentation Experiments: “Impact Studies - GPN” NASA / Public domain (cropped)
- Estimating the State of Space Objects from Light Curves: “Artist concept of the Hubble Space Telescope (HST) after STS-31 deployment” NASA / Public domain (cropped)
- Related lab (安倍・久谷研究室
（流体力学分野） ): “Computational fluid dynamics analysis of material flow using a conventional friction stir welding tool © Mike Lewis and Simon Smith, OxCAM, CC-BY-SA 4.0” aiCAMstir / CC BY-SA 4.0 (cropped) - Related lab (矢代研究室
（軽構造システム工学分野） ): “Carbonsheetwiki1” Racingjeff / CC BY-SA 3.0 (cropped) - Related lab (井上研究室
（推進工学分野） ): “J58 AfterburnerT” NASA / Public domain (cropped) - Related lab (外本・
坂東研究室 （誘導・ 制御工学分野） ): “NASA spacecraft comparison” NASA/Davis Paul Meltzer / Public domain (cropped)
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