SkyMate

Stars

The named stars in SkyMate’s web catalog, brightest first. Sort, filter by hemisphere, and open any star to see where it is tonight.

Named stars

154 stars, brightest first

How star brightness works

Astronomers measure brightness in magnitudes, where smaller numbers are brighter. Each step of one magnitude is about 2.5 times brighter, so a magnitude 1 star is 100 times brighter than a magnitude 6 star. Sirius, the brightest star in the night sky, is magnitude −1.5. From a dark site the faintest stars you can see with your eyes are around magnitude 6; from a city, often only 3 or 4.

Stars rise and set about four minutes earlier each night, so the stars on view change with the seasons. Open any star to see when it is above the horizon for your place tonight. For star patterns, browse the constellations.