TITLE: GCN GRB OBSERVATION REPORT NUMBER: 982 SUBJECT: GRB 010222 BV optical observations DATE: 01/02/23 22:13:54 GMT FROM: Corrado Bartolini at Universita di Bologna C. Bartolini, A. Guarnieri, A. Piccioni (Dip. Astronomia, Univ. of Bologna), S. Bernabei (Astron. Obs., Bologna) and G. Pupillo (ISAO, CNR, Bologna) report: "We have imaged the proposed optical counterpart (GCN #961) of GRB010222 (GCN #959, 960) on February 23 in the B and V bands with the 152 cm Loiano telescope (plus EEV CCD) of the Observatory of Bologna. The seeing was 4 arcseconds. The preliminary magnitudes are given with respect to the comparison star "A" (GCN 963) = USNO 1275-08542334. mean UT Filter exptime delta_mag (s) 23.174 B 2400 2.04 +/- 0.07 23.199 V 1800 2.69 +/- 0.09 Thus assuming for the star "A" B=17.60, then the OT had B = 19.64 +/- 0.07".