{
  "submittedHow": "web",
  "body": "\nA. J. Levan (Radboud & Warwick), J. Quirola-Vasquez (Radboud), R. A. J. Eyles-Ferris (Leicester), G. Corcoran (UCD), A. P. C. van Hoof (Radboud), P. G. Jonker (Radboud), D. B. Malesani (DAWN/NBI and Radboud), J. Chacón (PUC), H. Sun (NAO, CAS), F. E. Bauer (SSI and UTA) report on behalf of a larger collaboration:\n\nWe observed the localisation region of EP260610b (Wu et al. 2026, GCN 44895) with the Gemini North Telescope and the GMOS-N instrument on Mauna Kea, Hawaii, USA. Observations began at 13:36:51 UT on 10 June 2026 and consisted of 7 × 100 s exposures in the SDSS r band (~0.81 hr after T0) and 3 × 100 s exposures in the SDSS z band (~1.08 hr after T0).\n\nBy comparison with the Legacy Survey images, we identify a candidate optical counterpart at the following coordinates (J2000):\n\nRA = 17:50:29.72\nDec = +46:32:10.6\n\nPhotometry performed on the stacked images yields r = 22.23 ± 0.03 and z = 22.19 ± 0.05 AB mag, calibrated against nearby stars from the Pan-STARRS catalog and not corrected for Galactic extinction.\n\nWe acknowledge the excellent support from the Gemini North staff in the execution of these challenging observations.\n",
  "format": "text/plain",
  "submitter": "Jonathan Quirola at Radboud University <jaquirola1990@gmail.com>",
  "subject": "EP260610b: Gemini North optical counterpart candidate",
  "createdOn": 1781110485554,
  "circularId": 44897,
  "eventId": "EP260610b"
}