TITLE: GCN GRB OBSERVATION REPORT NUMBER: 112 SUBJECT: GRB 980613: BATSE Observations DATE: 98/06/19 01:46:59 GMT FROM: R Marc Kippen at BATSE/UAH/MSFC GRB 980613: BATSE Observations P. Woods, R. M. Kippen (University of Alabama in Huntsville) & V. Connaughton (NRC & NASA/MSFC) report on behalf of the BATSE GRB team: On June 13.20215 UT, BATSE detected a gamma-ray burst coincident with GRB 980613 (IAUC 6938). The event did not activate the on-board BATSE trigger because it was not sufficiently intense to override a large solar flare (trigger number 6821) that occurred ~33 minutes earlier. The GRB consisted of a single pulse lasting about 20 s with little resolvable structure on the 1 second time-scale. Its peak flux (50-300 keV; integrated over 1 s) and fluence (>20 keV) are 0.63 (-/+ 0.05) photons cmE-2 sE-1 and 1.71 (-/+ 0.25) x 10E-6 erg cmE-2, respectively. This ranks it near the middle of the BATSE burst flux/fluence distribution. The average spectral hardness of the burst, as estimated by the ratio of 100-300 keV counts to those in the 50-100 keV range, is H32 = 0.93 (-/+ 0.12), which is also average for events of this duration. The BATSE location is consistent with those measured by BeppoSAX. This message is citeable.