TITLE: GCN CIRCULAR NUMBER: 22415 SUBJECT: Konus-Wind observation of GRB 180210A DATE: 18/02/14 13:27:42 GMT FROM: Dmitry Svinkin at Ioffe Institute D. Svinkin, S. Golenetskii, R. Aptekar, D. Frederiks, P. Oleynik, M. Ulanov, A. Tsvetkova, A. Lysenko, A.Kozlova, and T. Cline on behalf of the Konus-Wind team, report: The long-duration GRB 180210A (Fermi-GBM detection: Bissaldi, GCN Circ. 22407; Fermi-LAT detection: Dirirsa and Bissaldi, GCN Circ. 22407) triggered Konus-Wind at T0=44678.454 s UT (12:24:38.454). The burst light curve shows a multipeaked structure which starts at ~T0-6 s and has a total duration of ~65 s. The emission is seen up to ~5 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB180210_T44678/ As observed by Konus-Wind, the burst had a fluence of 4.81(-0.30,+0.36)x10^-5 erg/cm2, and a 64-ms peak flux, measured from T0+20.224 s, of 5.35(-1.07,+1.10)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+47.360 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -0.49(-0.13,+0.15), the high energy photon index beta = -3.12(-0.54,+0.30), the peak energy Ep = 153(-8,+8) keV (chi2 = 84/97 dof). The spectrum near the maximum count rate (measured from T0+16.128 to T0+22.784 s) is best fit in the 20 keV - 10 MeV range by the GRB (Band) model with the following parameters: the low-energy photon index alpha = -0.08(-0.24,+0.27), the high energy photon index beta = -3.25(-1.02,+0.37), the peak energy Ep = 152(-11,+12) keV (chi2 = 106/91 dof). All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.