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China's Tianwen-2 spacecraft recently arrived at the launch site for its upcoming May 2025 mission to asteroid Kamoʻoelewa.
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China's Tianwen-2 spacecraft recently arrived at the launch site for its upcoming May 2025 mission to asteroid Kamoʻoelewa. This mission will collect samples from the 40-100 meter asteroid and deliver them to Earth by 2027. Kamoʻoelewa is a small, "quasi-satellite" of Earth with an unusually rapid rotation rate. A team of astronomers put out a new paper describing their most recent observations of Kamoʻoelewa and the outstanding scientific questions.
Astrometry, orbit determination, and thermal inertia of the Tianwen-2 target asteroid (469219) Kamo`oalewa
Abstract page for arXiv paper 2502.13222: Astrometry, orbit determination, and thermal inertia of the Tianwen-2 target asteroid (469219) Kamo`oalewa
arXiv.org (arxiv.org)
