# Harvard 21

Harvard 21 is an open cluster in the constellation Cassiopeia, magnitude 9.0, 1.8′ across.

A 9.0-magnitude open cluster in Cassiopeia, about 1.8′ across.

## When and where to see it

It is best placed in the evening sky around October, when it crosses the meridian at about 10 pm local time (around midnight in September). It can be seen from everywhere north of 28°S and never sets north of 28°N.

At its highest it stands 78° up from 50°N, 63° up from 35°N, 28° up from the equator, below the horizon from 35°S.

## Facts

- Type: Open cluster
- Constellation: Cassiopeia
- Designations: Harvard 21
- Magnitude: 9.0
- Apparent size: 1.8′
- Position: RA 23h 54.2m, Dec +61° 44′ (J2000)

Open AstroPilot to see when Harvard 21 is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view. https://astropilot.space/object/Harvard21