Messier 101 - NGC 5457

No dss image available for Messier 101
 
Aladin viewer for the region around Messier 101
Pinwheel Galaxy
h 1744, GC 3770, MCG +09-23-028, ARP 026, UGC 8981, PGC 50063, SDSS J140312.54+542056.1

Type  Galaxy
Magnitude  7.86
Size  21.88' x 20.89' @ 28°
Right Ascension  14h 3' 12.5"  (2000)
Declination  54° 20' 56" N
Constellation  Ursa Major
Description  pB, vL, iR, g, vsmbM, BSN
Classification  SBc
Observing Notes

Andrew Cooper
Aug 27, 2011    Hale Pohaku, HI (map)
46cm f/4.5 Newtonian, Deep Violet @ 175x
Seeing: 7 Transparency: 7 Moon: 0%

A magnificent face-on spiral, multiple arms visiblespiraling out from the core, a number of HII regions visible within the arms, a 12th magnitude star just 1' north of the core, a pair of 13 magnitude stars on the south margin, SN2011FE currently visible in the southern reach, at least a magnitude brighter than any of the involved stars

Andrew Cooper
Jun 12, 1999    Pinal Peak, AZ (map)
20cm f/10 SCT

Big! dim, low surface brightness, brighter at center, otherwise no detail

William Herschel
Apr 14, 1789    Observatory House, Slough (map)

SN. [very bright, small nucleus] with extensive nebulosity, pretty well determined on the preceding side, but very diffuse to the north following. Includes the two following nebulae [III.788 and 789, NGC5461 and NGC5462], and seems to extend 20', perhaps 30' or more.
― SEDS website

Charles Messier
Mar 27, 1781    

Nebula without star, very obscure & pretty large, of 6 or 7 minutes in diameter, between the left hand of Bootes & the tail of the great Bear. It is difficult to distinguish when one lights the wires.
― Connaissance des Temps, 1781
Other Data Sources for Messier 101
Nearby objects for Messier 101
16 objects found within 60'
NGC 5422 NGC 5447 NGC 5449
NGC 5450 NGC 5451 NGC 5453
NGC 5455 NGC 5458 NGC 5461
NGC 5462 NGC 5471 NGC 5473
NGC 5474 NGC 5477 NGC 5484
NGC 5485
Credits...

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

A complete list of credits and sources can be found on the about page

Messier 101