News From the Field
Arecibo Observatory sees comet 209P/LINEAR
May 29, 2014
The Arecibo Observatory planetary radar system observed periodic comet 209P/LINEAR from May 23 through May 27, 2014, finding it to be about 2.4 by 3 km kilometers (1.5 x 1.8 miles) in size and elongated in shape. This is consistent with the size range suggested by optical observations, but it is the first direct measurement of the comet's nucleus dimensions.
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