TITLE: GCN GRB OBSERVATION REPORT NUMBER: 199 SUBJECT: GRB990123, BeppoSAX WFC detection and NFI planned follow-up DATE: 99/01/23 14:53:46 GMT FROM: Luigi Piro at IAS/CNR Frascati Luigi Piro on behalf of the BeppoSAX team report: On Jan.23, 9:47:14 UT BeppoSAX GRBM has been triggered by a burst, GB990123 (also BATSE trigger n.7343), the strongest detected so far simultaneously with the WFC. Preliminary coordinates from WFC are: R.A.(2000)= 231.374 DEC(2000)= +44.754 with an error radius of about 5' A follow-on with NFI is being planned.