TITLE: RXTE_ASM TRANSIENT RAPID POSITION NOTICE REF_NUM: 1 NOTICE_TYPE: Crossed_Scan NOTICE_DATE/TIME: Tue Feb 16 20:01:58 GMT 1999 TRANS_TIME: 19773 SOD {05:29:32} UT TRANS_DATE: 11064 TJD; 251 DOY; 98/09/08 TRANS_RXTE_ASM_RA: 237.798d (J2000) TRANS_RXTE_ASM_DEC: -56.467d (J2000) TRANS_RXTE_ASM_CORNER1: 237.918d -56.475d (J2000) TRANS_RXTE_ASM_CORNER2: 237.526d -56.330d (J2000) TRANS_RXTE_ASM_CORNER3: 237.672d -56.460d (J2000) TRANS_RXTE_ASM_CORNER4: 238.066d -56.604d (J2000) TRANS_RXTE_ASM_ERROR: 0.204 [deg radius, 90%, stat + sys] TRANS_RXTE_ASM_INTEN: 298 [mCrab] COMMENTS: COMMENTS: TIME SINCE EVENT: 232712 minutes COMMENTS: COMMENTS: This alert is generated by two crossed lines of position COMMENTS: with a very high level of confidence for localizing a COMMENTS: real uncatalogued x-ray transient or gamma-ray burst. COMMENTS: Optical counterparts to GRBs have NEVER been observed COMMENTS: less than a few hours after the event. We claim no COMMENTS: ownership of any results that follow from this report. COMMENTS: We'd like to encourage you to take advantage of this COMMENTS: opportunity to make the next big discovery. COMMENTS: COMMENTS: Below are quanities to aid in evaluating this alert. COMMENTS: Values of chi-sq. less than 1.15 and S/N > 6.0 are good COMMENTS: indicators of a strong, real detection. COMMENTS: COMMENTS: Chi-sq. 1.155346 and 1.034686 COMMENTS: S/N ratio 19.545126 and 12.112560 COMMENTS: COMMENTS: The following comments should help indicate whether or not COMMENTS: this alert was spawned by the detection of a GRB. They are COMMENTS: not definitive, but we are confident that there *will* be COMMENTS: something new of Astronomical interest in this error box. COMMENTS: COMMENTS: BATSE reports no recent GRB trigger. COMMENTS: COMMENTS: SSC 1: No short-term variability detected in ASM MTS data. COMMENTS: SSC 0: No short-term variability detected in ASM MTS data. COMMENTS: COMMENTS: This alert was generated by software by Donald A. Smith. COMMENTS: Please feel free to email me (dasmith@space.mit.edu) COMMENTS: with any questions. COMMENTS: A record of ASM Crossed-box alerts is kept at COMMENTS: http://xte.mit.edu/crossbox/ COMMENTS: Please check there for sky maps and time-series data. COMMENTS: Please report any results as soon as possible via the COMMENTS: GCN circulars and any other means you see fit to use. COMMENTS: If you have no immediate means of distributing your COMMENTS: results, feel free to call Don Smith at home: COMMENTS: (617) 720-1612 or at work: (617) 258-8108 for assistance.