TITLE: GCN CIRCULAR NUMBER: 30919 SUBJECT: Correction to GCN 30915: GRB 210928A: Swift-XRT analysis DATE: 21/10/02 20:01:55 GMT FROM: Kim Page at U.of Leicester klp5@leicester.ac.uk

K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team:

Incorrect coordinates for the X-ray afterglow of GRB 210928A were accidentally reported in GCN 30915. The correct position (as earlier stated in ATel 14945) is:

RA, Dec(J2000) = 245.81275, -17.87598, which is equivalent to

RA(J2000) = 16h 23m 15.06s Dec(J2000) = -17d 52m 33.5s with an estimated 90% uncertainty radius of 2.9 arcsec.

The information provided regarding the light-curve and spectrum were for the afterglow; only the position was incorrect.

We apologise for any confusion.