^ 3.03.13.23.33.4Table 4, Levesque et al. 2005, using Mbol = −9.15 for KW Sagittarii (see the table) and 4.74 for the Sun (p. 982.)
^ 4.04.1KW Sagittarii is in the Sgr OB5 association, which has an estimated distance modulus of 12.4. See Tables 1 and 2, Levesque et al. 2005.
^ 5.05.1"The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not As Cool As We Thought", Emily M. Levesque, Philip Massey, K. A. G. Olsen, Bertrand Plez, Eric Josselin, Andre Maeder, and Georges Meynet, The Astrophysical Journal628, #2 (August 2005), pp. 973-985, doi:10.1086/430901, Bibcode:2005ApJ...628..973L.