Semi-regular and Mira stars Alpha Ori (Betelgeuse) Mu Cephei µ Cephei (HD 206936), the Herschel's ``Garnet Star'', is a fourth-magnitude M-supergiant in southern Cepheus near the IC 1396 nebula complex. This is semi-regular pulsating star of spectral type M2Iae. The variation range is between m=3.6-5.1 (periods of 2 and 12 years) . Position (J2000): R.A.= 21 43 30 Dec.
= +58 46 48 Click on the image to enlarge. R Leo A classical Mira star at maximum. Click on the image to enlarge. |