Based on a recessional velocity of 4890 km/sec, NGC 2200 is about 225 million light years away. It is thought to be physically paired with NGC 2201. If so, the two galaxies are probably close to their average distance of 215 to 220 million light years. Given that and its apparent size of 1.0 by 0.9 arcmins, it is about 65 thousand light years across.

Based on a recessional velocity of 4660 km/sec, NGC 2201 is about 210 million light years away. It is thought to be physically paired with NGC 2200, which may be responsible for its distorted outer disk. If so, the two galaxies are probably close to their average distance of 215 to 220 million light years. Given that and its apparent size of 3 by 2 arcmins, it is about 180 thousand light years across.

Apparent size about 7 arcmin.

The second IC adds (per Delisle Stewart) "faint cluster, not a nebula". Apparent size about 3.3 arcmin.

Apparent size about 10 arcmin.

Apparent size about 1.4 by 0.9 arcmin.

Apparent size about 2.4 by 1.3 arcmin.

The second IC adds (per Howe and Stewart) "bi-nuclear, surrounded by faint trace of ring". Paired and strongly gravitationally interacting with IC 2163, which see for a more detailed discussion of that galaxy. Based on a 2740 km/sec recessional velocity, NGC 2207 is about 125 million light years away (and of necessity at the same distance as its companion), in fair agreement with redshift-independent distance estimates of 55 to 110 million light years. Given that and its apparent size of 4.3 by 2.8 arcmin, it is about 150 thousand light years across.

Apparent size about 1.6 by 1.1 arcmin.

Apparent size about 2.8 arcmin.

In the Large Magellanic Cloud. Apparent size about 2.1 arcmin.

The second IC lists a corrected RA (per Ormond Stone, Bigourdan and Howe) of 06 12 23. Apparent size about 1.4 by 0.7 arcmin.

Apparent size about 1.5 by 0.8 arcmin.

Apparent size about 2.1 arcmin.

In the Large Magellanic Cloud. Apparent size about 3.6 arcmin.

Apparent size about 8 arcmin.

Apparent size about 1.4 by 1.1 arcmin.

Apparent size about 4.7 by 4.3 arcmin.

Apparent size about 10 arcmin.

Apparent size about 5 arcmin, around 8th magnitude SAO 217873.

Apparent size about 2.0 by 0.5 arcmin.

Apparent size about 1.2 by 0.3 arcmin.

Apparent size about 3.0 by 2.6 arcmin.

Apparent size about 20 arcmin.

Apparent size about 40 arcmin.

The core of NGC 2225; apparent size about 0.8 arcmin.

Apparent size about 2.1 by 1.2 arcmin.

Apparent size about 0.8 by 0.7 arcmin.

Apparent size about 1.5 by 0.4 arcmin.

Apparent size about 1.2 by 0.9 arcmin.

In the Large Magellanic Cloud. Apparent size about 2.0 arcmin.

Apparent size about 45 arcmin.

Apparent size about 0.9 by 0.2 arcmin.

Apparent size about 35 arcmin.

Apparent size about 1.4 by 1.0 arcmin.

Apparent size about 8 arcmin.

The Rosette Nebula is a relatively near and therefore apparently large (and spectacular) stellar birthplace. It is not unusual in such cases for several NGC entries to apply to different parts of the object, and not infrequently, to be misapplied. Sorting out the mess can require considerable research, so the entries on this page will be primarily confined to a historical discussion, which can be amended as new information becomes available. For a physical discussion of the nebula (and a spectacular image), see The Rosette Nebula.
     The Rosette is usually listed as NGC 2239, but that is incorrect. Regardless of what John Herschel saw when he observed the cluster of stars listed as NGC 2239, Dreyer's NGC entries, and the IC correction shown here, make it clear that Dreyer considered the cluster of stars in the center of the Rosette to be Herschel's cluster, and the Nebula itself was primarily comprised of NGC 2237 and 2238. A future iteration of this page will discuss such matters in more detail, and include images of the Nebula which show my (eventual) final interpretation of the historical evidence.
     (Note to self, to be used in the above: The first IC adds "2237 and 2238 are parts of an extremely large nebulous ring surrounding the cluster h392. See a sketch by Barnard (A.N. 2918)". This implies that the Rosette is the extremely large ring in question, consisting of (among other entries) NGC 2237 and 2238; and h392 (= NGC 2239) is the cluster at the center of the Rosette, not the one off to the side, centered on 12 Monocerotis. Also, per Steinicke, the apparent size of NGC 2237 is about 80 by 50 arcmin.)

The Rosette Nebula is a relatively near and therefore apparently large (and spectacular) stellar birthplace. It is not unusual in such cases for several NGC entries to apply to different parts of the object, and not infrequently, to be misapplied. Sorting out the mess can require considerable research, so the entries on this page will be primarily confined to a historical discussion, which can be amended as new information becomes available. For a physical discussion of the nebula (and a spectacular image), see The Rosette Nebula.
     The Rosette is usually listed as NGC 2239, but that is incorrect. Regardless of what John Herschel saw when he observed the cluster of stars listed as NGC 2239, Dreyer's NGC entries, and the IC correction shown here, make it clear that Dreyer considered the cluster of stars in the center of the Rosette to be Herschel's cluster, and the Nebula itself was primarily comprised of NGC 2237 and 2238. A future iteration of this page will discuss such matters in more detail, and include images of the Nebula which show my (eventual) final interpretation of the historical evidence.
     (Note to self, to be used in the above: The first IC adds "2237 and 2238 are parts of an extremely large nebulous ring surrounding the cluster h392. See a sketch by Barnard (A.N. 2918)". This implies that the Rosette is the extremely large ring in question, consisting of (among other entries) NGC 2237 and 2238; and h392 (= NGC 2239) is the cluster at the center of the Rosette, not the one off to the side, centered on 12 Monocerotis. Also, per Steinicke, NGC 2238 = a knot in the Rosette Nebula, about 80 by 60 arcmin apparent size.)

The Rosette Nebula is a relatively near and therefore apparently large (and spectacular) stellar birthplace. It is not unusual in such cases for several NGC entries to apply to different parts of the object, and not infrequently, to be misapplied. Sorting out the mess can require considerable research, so the entries on this page will be primarily confined to a historical discussion, which can be amended as new information becomes available. For a physical discussion of the nebula (and a spectacular image), see The Rosette Nebula.
     The Rosette is usually listed as NGC 2239, and NGC 2239 as 12 Monocerotis, but both are incorrect. Regardless of what John Herschel saw when he observed the cluster of stars listed as NGC 2239, Dreyer's NGC entries and the IC correction shown below make it clear that Dreyer considered the cluster of stars in the center of the Rosette to be Herschel's cluster, and the Nebula itself was primarily comprised of NGC 2237 and 2238. Also, since 12 Monocerotis is a 5th-magnitude star, Herschel's reference to an 8th-magnitude star and Dreyer's statement that the Nebula was centered on Herschel's cluster mean that NGC 2239 cannot be the scattering of stars associated with 12 Monocerotis (which is on the southeastern side of the Nebula). A future iteration of this page will discuss such matters in more detail, and include images of the Nebula which show my (eventual) final interpretation of the historical evidence. (Note: At this date, the 2000.0 RA and Dec for NGC 2239 correspond to the usual identification with 12 Monocerotis; when they have been changed to a presumably more accurate value, this note will be deleted.)
     (The following is the historical evidence for the statements above) Per Dreyer, NGC 2239 (= John Herschel's GC 1420 = h392, 1860 RA 06 23 29, NPD 84 57.5) is an "8th-magnitude star in a large, poor, bright cluster". The first IC adds "2237 and 2238 are parts of an extremely large nebulous ring surrounding the cluster h392. See a sketch by Barnard (A.N. 2918)". This implies that the Rosette is the extremely large ring in question, consisting of (among other entries) NGC 2237 and 2238; and h392 (= NGC 2239) is the cluster at the center of the Rosette, not the one off to the side, centered on 12 Monocerotis. Per Steinicke, apparent size about 24 arcmin.

In the Large Magellanic Cloud. Apparent size about 1.3 arcmin.

Apparent size about 0.37 arcmin.

The second IC lists a corrected RA (per Bigourdan) of 06 24 28 and adds (per Delisle Stewart) "faint, open cluster, stars from 9th to 11th magnitude". Apparent size about 8.3 arcmin.

See the discussion of NGC 2237, 2238 and 2239 for a hint of the complications involved in unraveling the historical assignment of NGC numbers in the region near the Rosette Nebula. Apparent size about 24 arcmin.

Apparent size about 5 by 4 arcmin.

See the discussion of NGC 2237, 2238 and 2239 for a hint of the complications involved in unraveling the historical assignment of NGC numbers in the region near the Rosette Nebula.

Apparent size about 6 arcmin.

In the Large Magellanic Cloud. Apparent size about 1.7 arcmin. (Says open cluster in Steinicke, but images and other references suggest a globular, so probably a typo.)