Photometric and morphological characterization of interstellar comet 3I/ATLAS

This work presents a photometric and morphological analysis of interstellar comet 3I/ATLAS, based on multiband observations obtained with 0.4 m telescope from Haleakala observatory of Las Cumbres Observatory (LCO), utilizing SDSS g', r' and i' filters. From radial profiles, isophotes and PSF analysis, the structure and antisolar elongation are characterized, the spectral slope of cometary dust is estimated and upper limits are set on the size of the unresolved nucleus. The results are consistent with a dust-dominated coma with photometric properties similar to those observed in other active comets, including interstellar comet 2I/Borisov