T Andromedae (T And) is a variable star of the Mira type in the constellationAndromeda. Like all the stars of this kind, T And is a cool asymptotic giant branch star of spectral type M4e-M7.5e, and his variability occurs periodically, with the period calculated at 281 days. The peak luminosity, however, is different every variability cycle, but can reach a peak magnitude mv=7.70.[2]
^Wyatt, S. P.; Cahn, J. H. (December 1983), "Kinematics and ages of Mira variables in the greater solar neighborhood", Astrophysical Journal, 275: 225–239, Bibcode:1983ApJ...275..225W, doi:10.1086/161527.
