Lacerta

features of interest

GAMMA (y) cassiopeiae 2 A hot, rapidly rotating star in the middle of the W of Cassiopeia. It throws off rings of gas from its equator from time to time, causing unpredictable changes in its brightness. Currently it is of magnitude 2.2, but in the past it has ranged between magnitudes 3.0 and 1.6.

ETA (n) cassiopeiae 5 An attractive binary pair of yellow and red stars, magnitudes 3.5 and 7.5, easily divided by small telescopes. The fainter companion orbits the brighter star every 480 years.

RHO (p) cassiopeiae 2 1 An intensely luminous yellow-white supergiant that varies between 4th and 6th magnitudes every 10 or 11 months.

M52 H 5 An open cluster visible through binoculars, noticeably elongated and spanning about one-third the width of a full moon.

M103 h 5 A small, elongated star cluster, better seen through small telescopes than binoculars.

elongated cluster

The main feature of the open star cluster M103 is a chain of three stars, which look like a mini Orion's belt.

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