{
  "bibcode": "2013GCN.14919....1V",
  "body": "A. Volnova (IKI), R.Inasaridze (AAO), O. Kvaratskhelia (AAO), V. \nAyvazian(AAO), Yu. Krugly (IA KhNU),  I. Molotov (KIAM), A. Pozanenko \n(IKI)  report on behalf of  larger GRB follow-up collaboration:\n\nFollowing trigger Swift #558631 (Barlow et al., GCN 14917) we imaged the \nregion of the trigger with   starting on June 21 (UT) 19:54:46. We \nobtained 50 unfiltered images of 50 s exposure. We investigated  a \ncombined image (mid time after the Swift trigger 0.75693 days) and \nwithin BAT error circle (Barlow et al., GCN 14917) found one bright \nsource which is not catalogued in USNO-B1.0 but barely visible in DSS2 \nRed image. Coordinates of the source is (J2000) 18:07:13.13 -22:17:14.4. \nIt is apparent that the source is not coincident with known X-ray source \nSAX_J1806.5-221. Brightness of the source is 17.09 +/- 0.03 calibrating \nagainst nearby USNO-B1.0 stars (R2).\n\nAt present time it is not clear if the source is related to the Swift \n#558631 trigger. The source also can be a new cataclysmic variable with \nmagnitude of the outburst of ~3m.\n\nA finding cahart can be found in\nhttp://grb.rssi.ru/Swift_558631/Swift_558631_chart.png",
  "circularId": 14919,
  "createdOn": 1371908570000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "Swift Trigger 558631:  AAO optical observations",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>"
}