| Nebula | |
|---|---|
 | |
| Observation data: J2000epoch | |
| Right ascension | 14h 03m 01s |
| Declination | +54° 14’ 29” |
| Apparent magnitude (V) | 15.22 |
| See also:Lists of nebulae | |
NGC 5455 is anemission nebula (HII region) located inMessier 101 (the Pinwheel Galaxy)[1] towards theconstellation Ursa Major. Eight other regions of Messier 101 are listed in the New General Catalogue, namelyNGC 5447,NGC 5449,NGC 5450,NGC 5451,NGC 5453,NGC 5458,NGC 5461 andNGC 5462.[2] Three of these regions were discovered byWilliam Herschel (NGC 5447, NGC 5461 and NGC 5462) and the other six byBindon Stoney.[3]