{
  "bibcode": "2018GCN.23529....1S",
  "body": "M. H. Siegel (PSU) and P. A. Evans (U Leicester) report on behalf of the Swift UVOT team:\n \nUVOT took a finding chart exposure of 150 seconds with the White filter\nstarting 2352 seconds after the BAT trigger. There is a candidate afterglow in\nthe rapidly available 2.7'x2.7' sub-image at\n RA(J2000)  =\t16:33:04.87 = 248.27028\n DEC(J2000) = +78:29:48.8  =  78.49690\nwith a 90%-confidence error radius of about 0.75 arc sec. This position is 2.2\narc sec. from the center of the XRT error circle and consistent with the optical\nafterglow reported by MASTER (Lipunov et al., GCN Circ. 23526) and BOOTES\n(Hu et al., GCN Circ. 23527). The estimated magnitude is\n17.26 with a 1-sigma error of about  0.14. No correction has been made for the\nexpected extinction corresponding to E(B-V) of 0.04. \n\n[GCN OPS NOTE(13dec18):  The \"A\" was added tot he GRB designation in the SUBUJECT-line.]",
  "circularId": 23529,
  "createdOn": 1544711318000,
  "email": "mhs18@psu.edu",
  "subject": "GRB181213A: Swift/UVOT Detection",
  "submitter": "Mike Siegel at PSU/Swift MOC  <mhs18@psu.edu>",
  "eventId": "GRB 181213A"
}