Position of CC0 at different wavelengths. (A) J-band image, first epoch; (B) H-band image, first epoch; (C) J-band image, second epoch; (B) H-band image, second epoch. The Y-band image is not shown due to the extreme faintness of the source. White circles indicate the best-fit positions from Table E.1; circle radii have been enlarged to ~10 times the uncertainties on best-fit positions to enhance visibility. Unlike a speckle (red circle), the separation of CC0 does not increase with wavelength.