Hentunen and Nissinen photographed the supernova SN 2010U.

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Hentunen and Nissinen photographed the supernova SN 2010U 6.2.2010 with GRAS1 remote telescope (see CBET 2161). The supernova is located in the galaxy NGC 4214. The supernova was discovered by Koichi Itagaki team. The brightness of the SN 2010U was about 16.6CR magnitudes.