TITLE: GCN CIRCULAR NUMBER: 32304 SUBJECT: GRB 220627A, GROND observations DATE: 22/06/30 15:07:56 GMT FROM: Sylvio Klose at TLS Tautenburg A. Nicuesa Guelbenzu, S. Klose (both TLS Tautenburg), and A. Rau (MPE Garching) report: We observed the field of GRB 220627A (Fermi GBM team, GCN 32278) with GROND mounted at the 2.2m MPG telescope at La Silla Observatory (Chile). Observations started at 01:30 UT on June 30, 2022, about 2.2 days after the GRB trigger and were on target for 20 minutes. They were performed at an average seeing of 0.8 arcsec and at an airmass of 1.1. The reported optical transient (de Wet et al., GCN 32289; Izzo et al., GCN 32291) is detected in the optical but not in the NIR bands with the following (preliminary) magnitudes and upper limits (AB mags; 3 sigma): g' = 23.31 +/- 0.11, r' = 22.70 +/- 0.06, i' = 22.50 +/- 0.12, z' = 22.23 +/- 0.21, J > 21.4, H > 20.6, K > 19.7. The given limits are derived based on calibrating the optical images against the SM catalog and the JHK data against 2MASS stars. We thank Regis Lachaume and Paul Eigenthaler for excellent support and for performing the observations.