{
  "bibcode": "2015GCN.18537....1C",
  "body": "S. B. Cenko (NASA-GSFC) and D. A. Perley (DARK/NBI) report on behalf of a larger collaboration:\n\nWe have continued to image the optical afterglow of GRB151027A (Maselli et al., GCN 18478) with the robotic Palomar 60-inch telescope (see Perley et al., GCN 18481). We report the following r�-band photometry, calibrated with respect to nearby point sources from the APASS survey:\n\nt_mid                                time since burst (d)          Magnitude\n���������������������������������\n2015-10-29T02:14:14      1.93                                   19.63 +/- 0.04\n2015-10-30T02:02:28      2.92                                   20.48 +/- 0.08\n\nThis implies a relatively steep power-law decay index of ~ 1.9 at these times.\n\nContinued observations are planned.",
  "circularId": 18537,
  "createdOn": 1446215828000,
  "email": "brad.cenko@nasa.gov",
  "subject": "GRB 151027A: Continued P60 Monitoring",
  "submitter": "S. Bradley Cenko at NASA/GSFC  <brad.cenko@nasa.gov>",
  "eventId": "GRB 151027A"
}