Rosette Nebula (NGC 2237)

Rosette Nebula (NGC 2237) is an emission nebula in the constellation Monoceros, magnitude 6.0 (blue), 1.3° × 1.0° across.

A huge ring of glowing gas around the young cluster NGC 2244 in Monoceros. Binoculars show the cluster; a UHC or OIII filter at low power reveals the nebula's petals.

When and where to see it

It is best placed in the evening sky around January, when it crosses the meridian at about 10 pm local time (around midnight in December). It can be seen from everywhere north of 85°S and never sets north of 85°N.

At its highest it stands 45° up from 50°N, 60° up from 35°N, 85° up from the equator, 50° up from 35°S.

Facts

Type

Emission nebula

Constellation

Monoceros

Designations

NGC 2237, NGC 2238, NGC 2246, C 49, Rosette A, Rosette B

Magnitude

6.0 (blue)

Apparent size

1.3° × 1.0°

Position

RA 6h 30.7m, Dec +5° 1′ (J2000)

Open AstroPilot to see when Rosette Nebula (NGC 2237) is highest tonight from your location, how easy it is with your telescope or binoculars, and an eyepiece view.