^ abcdZacharias, N. et al. (2003), "The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)", CDS/ADC Collection of Electronic Catalogues volume=1289, Bibcode:2003yCat.1289....0Z.
^ abLandolt, Arlo U. (July 1992), "UBVRI photometric standard stars in the magnitude range 11.5-16.0 around the celestial equator", Astronomical Journal104 (1): 340–371, 436–491, Bibcode:1992AJ....104..340L, doi:10.1086/116242.
In left column are stellar classes of primary members of star systems. Bold are systems containing at least one component with absolute magnitude of +8.5 or brighter. Italic are systems without known trigonometric parallax.