Messier 100 (NGC 4321) in Coma Berenices AAO image reference AAT 58.    « Previous || Next » Top left is NE. Image width is about 8 arc min Image and text © 1991-2002, Anglo-Australian Observatory, photograph by David Malin. The Virgo cluster spills over into the adjoining constellation of Coma Berenices and is the nearest moderately rich cluster of galaxies. It contains examples of almost every known kind and two quite different types are represented here. The dominant galaxy is the face-on spiral M100, one of the finest spirals in this diverse group. As might be expected in a galaxy-rich environment, the lack of perfect symmetry in its brightest spiral arms suggests that M100 has been disturbed by gravitational interaction with its neighbours. At the top of the image is the first colour picture of a much less spectacular galaxy, a so-called 'nucleated dwarf' elliptical galaxy, probably interacting with M100. Dwarf galaxies are by far the commonest kind in rich clusters such as this, but nucleated examples are quite rare. Many more can be seen on a deep image of this field. Objects on the photograph, from NGC 2000.0 (R.W. Sinnott, Ed.) © Sky Publishing Corporation, 1988:

NGC 4321  Gx 12 22.9  +15 49 s  Com6.99.4  !! pF, vL, R, vg, psbMrN, 2-br spir; = M100
NGC 4323  Gx 12 22.9  +15 54 r  Com  2nd of 2, vF, n of M100; = 4322?
NGC 4322  Gx 12 23.0  +15 54 s  Com1.3  13.9  1st of 2, vF, n of M100