RGB image of NGC 1427A made using the Fornax Deep Survey images (Iodice et al. 2016; Venhola et al. 2018) in band i (R channel), g (G channel), and u (B channel). The solid white contours are three isophotes from the g-band image convolved with a 5″-FWHM Gaussian kernel. The isophotes are spaced by a factor of 5 in surface brightness (∼1.75 mag arcsec⁻²) and highlight regions of the stellar body described in Sect. 1: (i) the inner-most isophote shows the bright stellar body of NGC 1427A with a semi-major axis of 50″ (∼5 kpc) and PA ∼ 100°; (ii) the middle isophote is asymmetric relative to the centre of the bright stellar body and includes the northern clump (dotted white circle), the northern plume (northern dashed line), and a faint elongated feature stretching from the eastern edge of the bright stellar body (southern dashed line); (iii) the faintest isophote has an elliptical shape centred on the bright part of the stellar body, with a semi-major axis of 1.8′ (∼10 kpc) and PA ∼ 70° (dotted white ellipse).