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E. Høg, C. Fabricius, V. V. Makarov, S. Urban, T. Corbin, G. Wycoff, U. Bastian, P. Schwekendiek, A. Wicenec: The Tycho-2 catalogue of the 2.5 million brightest stars. In: Astronomy and Astrophysics. Bd. 355, 2000, S. L27–L30, bibcode:2000A&A...355L..27H (PDF; 102 kB). VizieR: The Tycho-2 Catalogue (Hog+ 2000).
E. Høg, C. Fabricius, V. V. Makarov, S. Urban, T. Corbin, G. Wycoff, U. Bastian, P. Schwekendiek, A. Wicenec: The Tycho-2 catalogue of the 2.5 million brightest stars. In: Astronomy and Astrophysics. Bd. 355, 2000, S. L27–L30, bibcode:2000A&A...355L..27H (PDF; 102 kB). VizieR: The Tycho-2 Catalogue (Hog+ 2000).