{
  "body": "Wenxiong Li, Runduo Liang (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP260131a with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory, Chile, ~1 hour after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band.\n\nWe find a uncataloged source at RA=149.9025, Dec=-3.3073 within the EP-FXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 61071.183 Mag 20.9 \n\nAdditional followup is encouraged.\n",
  "bibcode": "2026GCN.43577....1L",
  "submittedHow": "web",
  "format": "text/plain",
  "subject": "EP260131a: Las Cumbres detection of an optical counterpart",
  "eventId": "EP260131a",
  "submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
  "createdOn": 1769836352866,
  "circularId": 43577
}