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Ouranos › Stars, nebulae, clusters and galaxies
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Emission nebula

The Rosette Nebula

Also NGC 2237 · Caldwell 49 · Sh 2-275

Open in OuranosCompare its size
The Rosette Nebula — DECam at Cerro Tololo, visible light
DECam at Cerro Tololo, visible light. Credit: CTIO/NOIRLab/DOE/NSF/AURA Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), D. de Martin & M. Zamani (NSF NOIRLab). Licence: CC BY 4.0. Source

A rose-shaped cloud of glowing gas whose central cluster has hollowed out its middle.

Measured

Distance
5,200 light-years
Size
about 130 light-years across (approximate)
Constellation
Monoceros
Position (J2000)
RA 6h 32m 27s, Dec +4.79°

How far, from the Sun

5,200 light-years. To cross it:

  • Light5,200 years
  • Voyager 1's speed92.4 million years
  • Driving at 100 km/h56.1 billion years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • Its central cluster, NGC 2244, has blown a hole through the middle with its stellar winds.
  • It spans about 1.3 degrees of sky, more than twice the width of the full Moon.
  • John Flamsteed noticed its star cluster around 1690.

Where this comes from

  • Phelps & Ybarra 2005 (1.6 kpc)

Every catalogue Ouranos draws is credited on the credits page.