The effect of proper motion on Pan-STARRS asteroid astrometry

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• 作者：David J. Tholen ; ^{tholen@ifa.hawaii.edu} ; Marco Micheli ; Garrett T. Elliott
• 关键词：Astrometry ; Asteroids ; Asteroids ; Dynamics ; Celestial mechanics ; Data reduction techniques
• 刊名：Icarus
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：223
• 期：1
• 页码：625-627
• 全文大小：180 K

文摘

We present evidence that the failure to account for proper motion is responsible for most of the regional biases seen in the astrometry of asteroids produced by the Pan-STARRS sky survey, as well as the 0.02 arcsec northward bias seen in our own Apophis astrometry.