Discovery of cometary nature of 2010 WK

2010 WK was discovered by the LINEAR survey on 2010, Nov. 17, and although its orbit looked like cometary in appearance, it was not in our T3 targets list because its MOID with Jupiter was 1.015 AU (our limit is set to 1 UA).
The cometary appearance was first discovered by Hidetaka Sato, member of the T3 project,  remotely with GRAS 0.50-m f/6.8 reflector from New Mexico, and then confirmed by several other members, including Enrico Prosperi, Luca Buzzi, Sergio Foglia et al., Leonid Elenin and Rolando Ligustri.
On 2010, Dec. 27 the Central Bureau for Astronomical Telegrams published CBET 2607 with the discovery circumstances (subscription required).
The astrometry and the updated orbital elements were published on MPEC 2010-Y30.

The original discovery image by H. Sato:


Confirmation images:
“prediscovery” image by E. Prosperi (160) on 2010, Dec. 12.0:


by R.Ligustri remotely from GRAS – New Mexico (H06):


by L. Elenin remotely from ISON-NM (H15):


by L. Buzzi from Schiaparelli Observatory (204):

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