M-89 an Elliptical
Galaxy in Virgo
This is a CCD image taken
with an STL-1301E CCD camera thru Kopernik's 20 inch F/8.1 telescope working
Messier: (March 18th, 1781) Nebula without a star in Virgo;
a little distance from and on the same parallel as....M-87. Its light is
extremely faint and pale and it can only be seen with difficulty'
(1864) 'Pretty bright, pretty small; gradually much brighter in the middle.'
'In appearance it resembles M-87 but is somewhat smaller and about 1 magnitude
fainter. ..... This is another of the rather 'yellowish' elliptical systems.....
i.e. it has mostly old or middle aged stars.....'
M-89 (aka NGC 4552) is an Elliptical
Galaxy in the Constellation of Virgo, and it is a member of the Virgo Galaxy
Cluster. It appears nearly circular in shape, and while small in size,
it is visually rather bright even in a small telescope. It is unknown if
it is truly spherical, or we are just looking directly at the end of the
major axis of an elliptical body. The galaxy is a very bright radio source
and also an X-ray source, both centered on the optical center of the galaxy.
These are indications of an active black hole at the core of the galaxy.
Note the numerous small and dim
background galaxies in the image. These systems are mostly dimmer than
- M-89 (NGC 4552)
- Magnitude: 10.5
- Constellation: Virgo
- RA: 12h 35m 39.9s
- Dec: +12° 33' 25" Epoch 2000
- Size (mins) 5.1' x 4.7'
- Classification: Elliptical Galaxy
George Normandin, KAS
June 26, 2011