{
  "bibcode": "2014GCN.15778....1Y",
  "body": "T. Yoshii, Y. Saito, S. Kurita, Y. Tachibana, K. Ito, R. Usui, T.Tanigawa, Y. Yano,Y. Yatsu, and N. Kawai (Tokyo Tech)\nreport on behalf of the MITSuME collaboration:\n\nWe observed the field of GRB 140102A (L. M. Z. Hagen et al., GCN Circular #15653) with the \noptical three color (g, Rc, and Ic) CCD cameras attached to the MITSuME 50 cm\ntelescope of Akeno Observatory, Yamanashi, Japan.\n\nThe observation started on 2014-01-02 21:18:44 UT ( 67sec after the burst).\nWe detected the previously reported optical afterglow of GRB140102A (D. Xu et al., GCN Circular #15655) in the Ic band.\n\nThe measured magnitudes were listed below.\n\nT0+      MID-UT      T-EXP        mag\n----------------------------------------------------\n67[sec]  21:18:59    30[sec]              Rc = 14.36 \u001b$B!^\u001b(B 0.4    Ic = 13.01+/-0.17\n----------------------------------------------------\nT0+ : Elapsed time after the burst [sec]\nT-EXP: Total Exposure time [sec]\nWe used GSC2.3 catalog for flux calibration.",
  "circularId": 15778,
  "createdOn": 1391090765000,
  "email": "yoshii.t.ac@m.titech.ac.jp",
  "subject": "GRB 140102A: MITSuME Akeno Optical observation",
  "submitter": "Taketoshi Yoshii at Tokyo Tech  <yoshii.t.ac@m.titech.ac.jp>",
  "eventId": "GRB 140102A"
}