TITLE: GCN CIRCULAR NUMBER: 20710 SUBJECT: GRB 170219A: CALET Gamma-Ray Burst Monitor detection DATE: 17/02/21 09:29:37 GMT FROM: Takanori Sakamoto at AGU M. L. Cherry (LSU), A. Yoshida, T. Sakamoto, Y. Kawakubo, M. Moriyama, Y. Yamada (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), I. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), W. Ishizaki (ICRR), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena) and the CALET collaboration: The short-duration GRB 170219A (Roberts et al., GCN Circ. 20706; Frederiks et al., GCN Circ. 20703; INTEGRAL-SPI/ACS trigger #7701) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 00:03:06.76 on 19 February 2017. The burst signal was seen by all CGBM instruments. Because of a problem in one of the ground alert processing script, the GCN notice was not distributed automatically for this event. The light curve of the SGM shows a single peak. The peak starts and peaks at T0-0.2 sec and ends at T+0.5 sec. The T90 duration measured by the SGM data is 0.25 +- 0.18 sec (40-1000 keV). The light curve is available at http://cgbm.calet.jp/cgbm_trigger/flight/1171497500/index.html The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.