GCN Circular 10295
K. Nishimoto, T. Sako, H. Naito, D. Suzuki (Nagoya Univ.) on behalf of the MOA Collaboration, M. Kurita (Nagoya Univ.), Y.Ita (NAOJ) on behalf of the IRSF Collaboration report: We searched for a NIR afterglow of GRB 091221 (GCN 10283, Krimm et al.) starting from 22:27:49.7 UT on 2009 Dec 21 (95 minutes after the burst) with the SIRIUS on the IRSF 1.4m telescope at SAAO in South Africa. In images of a 150sec exposure with J, H and Ks filters, we did not find any object within the error circle of the Swift XRT source position ( GCN 10287, Evans et al.) Three sigma upper limits are the followings. J > 19.5 H > 18.4 K > 17.0 This photometry was done by using the DoPhot and calibrated against the 2MASS cataloged stars.