  In a recent paper [M. Araya, M. Harada, Some restrictions on the weight
enumerators of near-extremal ternary self-dual codes and quaternary Hermitian
self-dual codes, Des. Codes Cryptogr., 91 (2023), 1813--1843], Araya and Harada
gave examples of self-dual near-extremal ternary codes of length 48 for $145$
distinct values of the number $A_{12}$ of codewords of minimum weight 12, and
raised the question about the existence of codes for other values of $A_{12}$.
In this note, we use symmetric 2-$(47,23,11)$ designs with an automorphism
group of order 6 to construct self-dual near-extremal ternary codes of length
48 for $150$ new values of $A_{12}$.
