A new Neptune-mass planet orbiting HD 219828 C. Melo, N. C. Santos, W. Gieren, G. Pietrzynski, M. T. Ruiz, S. G. Sousa, F. Bouchy, C. Lovis, M. Mayor, F. Pepe et al. (3 more) A&A, 467 2 (2007) 721-727 Published online: 12 February 2007 DOI: 10.1051/0004-6361:20066845