Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 14877

GRB 130612A: Skynet/PROMPT detection of the optical afterglow
2013-06-12T04:36:09Z (11 years ago)
Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet <>
A. Trotter, J. Haislip, D. Reichart, A. LaCluyze, T. Berger, M. 
Carroll, H. T. Cromartie, R. Egger, A. Foster, C. Foster, N. Frank, K. 
Ivarsen, D. James, M. Maples, J. Moore, M. Nysewander, E. Speckhard, P. 
Taylor and J. A. Crain report

Skynet observed the Swift XRT localization of the field of GRB 130612A 
(Racusin et al., GCN 14874, Swift trigger #557976), beginning at 
2013-06-12, 3:23:27 UT (t=70s post-trigger) using three 16" telescopes 
of the PROMPT array at Cerro Tololo, Chile.  We detect a fading 
afterglow in the B, V and I bands at a position (J2000.0)
RA: 17:19:10.6
Dec: 16:43:11.6,
consistent with the detections of Racusin et al. (GCN 14874), Melandri, 
Mundell & Gomboc (GCN 14875), and Morgan (GCN 14876).

A preliminary light curve is at:

Preliminary photometry is calibrated to 5 NOMAD/USNO B1.0 stars in the 
field, and magnitudes are in the Vega system.

Skynet observations are ongoing.

[GCN OPS NOTE(12jun13): Per author's request, the typo in JH's name was corrected.]
Looking for U.S. government information and services? Visit