TITLE:   GCN CIRCULAR
NUMBER:  23668
SUBJECT: GRB 190106A: GMG continued observation
DATE:    19/01/10 07:19:51 GMT
FROM:    Jirong Mao at Yunnan Obs  <jirongmao_obs@ynao.ac.cn>

J. Mao, X.-L. Zhang, J.-M. Bai (YNAO) report:


We still monitor the afterglow of GRB 190106A with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatories. The observation began at UT 13:57:39, 9th, Jan, 2019, about 72.2 hours after the trigger. We marginally detected the source. A very preliminary measurement provided a magnitude of R~21.2.