An X-ray and optical study of the ultracompact X-ray binary A 1246-58 J. J. M. in 't Zand, C. G. Bassa, P. G. Jonker, L. Keek, F. Verbunt, M. Méndez and C. B. Markwardt A&A, 485 1 (2008) 183-194 Published online: 16 April 2008 DOI: 10.1051/0004-6361:200809361