The distance and size of the red hypergiant NML Cygni from VLBA and VLA astrometry B. Zhang, M. J. Reid, K. M. Menten, X. W. Zheng and A. Brunthaler A&A, 544 (2012) A42 Published online: 24 July 2012 DOI: 10.1051/0004-6361/201219587