Secular brightness curves of 272 comets P. Lacerda, A. Guilbert-Lepoutre, R. Kokotanekova, L. Inno, E. Mazzotta Epifani and C. Snodgrass A&A, 697 (2025) A210 Published online: 21 May 2025 DOI: 10.1051/0004-6361/202453565