美国天文学会在帕萨迪纳市（美国加州）的会议上，发布了罗塞塔号行经司琴星时传回的第一批观测成果。 结果显示，司琴星尽管体积不大，其表面却覆盖有一层尘土。

First results from the encounter, announced at the American Astronomical Society meeting in Pasadena, suggest the asteroid, small though it is, is covered with a layer of dust.

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这座古老的观象台，由元代天文学家王恂。郭守敬奉命修建，原名司天台。

This ancient observatory was built by the astronomers Wang Xun and Guo Shoujing. Its original name was the Administration of Heavenly Observatory.

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