Best-fit image at 10 μm using the N-band MATISSE data of 3 Puppis. The fit is performed combining MC3D code with two elliptical Gaussian disc models ({MC3D + 2EG} model) to describe the asymmetries revealed by MYTHRA and SPARCO image reconstructions. The model fitting results in a reduced chi-squared value of 24. East corresponds to increasing x-axis values, and north to increasing y-axis values.