{
  "bibcode": "2019GCN.23622....1X",
  "body": "L. P. Xin,  P. P. Zhang, R. S. Zhang,  J. Wang,   J. Y. Wei,   E. W. Liang, \nX. G. Wang, Y. J. Xiao,   Y. G. Yang,  X. M. Lu,  L. Huang,    H. B. Cai,   \nY. L. Qiu,  Y. Xu, Y.  J. Xiao, Y. T. Zheng,  C. Wu,   J. S. Deng,  D. W. Xu, \nD. TURPIN, H. L. Li, and W. L. Dong, report:\n\nWe  observed  GRB 190106A  ( Sonbas et al., GCN 23615 )  \nwith  GWAC-F60B 60cm optical telescope  at 14:51:03 UT, \nJan. 06th 2019,  about 77  min after the burst. \n\nThe optical afterglow reported by ( Sonboas et al., GCN 23615; \nLipunov et al., GCN 23636; Itoh et al., GCN23617; Mao et al., GCN 23618 )\nis clearly detected  in R band images. The brightness is 17.8mag \ncalibrated by nearby USNO-B1.0 stars.\n\nGWAC-F60B is operated by Guangxi university and NAOC, CAS, \nat Xinglong observatory, China.\n\nFurther observation is continuing. \n\nThe message may be cited.",
  "circularId": 23622,
  "createdOn": 1546789235000,
  "email": "xlp@nao.cas.cn",
  "subject": "GRB 190106A: GWAC-F60B optical detection",
  "submitter": "L.P. Xin at NAOC  <xlp@nao.cas.cn>",
  "eventId": "GRB 190106A"
}