^ 1.01.11.22MASS. VizieR. Centre de Données astronomiques de Strasbourg. [27 March 2017]. (原始內容存檔於2021-09-01).
^Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. The Tycho-2 catalogue of the 2.5 million brightest stars. Astronomy and Astrophysics. 2000, 355: L27. Bibcode:2000A&A...355L..27H.