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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1874 SUBJECT: IPN triangulation of GRB030218 (annulus) DATE: 03/02/21 17:28:35 GMT FROM: Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu> K. Hurley and T. Cline, on behalf of the Ulysses GRB team, and A. von Kienlin, G. Lichti, and A. Rau, on behalf of the INTEGRAL SPI-ACS GRB team, report: Ulysses and INTEGRAL (SPI-ACS) observed this burst at 42158 s. As observed by Ulysses, it had a duration of approximately 200 seconds, a 25-100 keV fluence of approximately 3.6E-05 erg/cm2, and a peak flux of approximately 1.9E-06 erg/cm2 s over 0.50 seconds. We have triangulated it to a preliminary annulus centered at RA, Decl(2000)= 351.179, -41.826 degrees, whose radius is 55.834 +/- 0.019 degrees (3 sigma ). This annulus can be improved and/or constrained, but as the event was not observed by Mars Odyssey, a small error box cannot be derived for it.
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