NGC 663 (C 10)

NGC 663 (C 10) is an open cluster in the constellation Cassiopeia, magnitude 7.1, 15′ across.

A bright, rich open cluster in Cassiopeia, one of the best in a constellation full of them, less than 2° east of M103.

When and where to see it

It is best placed in the evening sky around November, when it crosses the meridian at about 10 pm local time (around midnight in October). It can be seen from everywhere north of 29°S and never sets north of 29°N.

At its highest it stands 79° up from 50°N, 64° up from 35°N, 29° up from the equator, below the horizon from 35°S.

Facts

Type

Open cluster

Constellation

Cassiopeia

Designations

C 10, Mel 11, Melotte 11

Magnitude

7.1

Apparent size

15′

Position

RA 1h 46.3m, Dec +61° 13′ (J2000)

Open AstroPilot to see when NGC 663 (C 10) is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view.