ESO245-5 is located in the constellation Phoenix and is an irregular galaxy 15 million light-years away from the Milky Way. It differs from what we traditionally understand as galaxies, possessing a chaotic structure with a central strip and faint spiral elements, similar to the Magellanic Clouds. The image shows dense clusters of stars against a background of dust, gas and light from more distant objects. In this image, stars take up so much of the field of view that it's hard to tell that what you're looking at is actually the bulk of a galaxy.
It might be a little difficult to discover that ESO 245-5 is a galaxy, another reason is its apparent lack of structure. We often admire Hubble's spectacular images of spiral galaxies, and part of what makes these galaxies so interesting is that their arms of stars, gas, and dust appear to be incredibly orderly. ESO245-5 is classified as an IB(s)m type galaxy, belonging to the galaxy classification system known as the Dvorkullar galaxy. The specific meaning of IB(s)m is: the galaxy is irregular (I), has stripes (B), has a slight spiral structure ((s)), and belongs to the Magellanic type (m).
Here, the meaning of "irregular" is intuitive: this galaxy does not appear to have a regular and orderly structure. In fact, essentially the entire field of view here is covered by the stars of this galaxy. The second term refers to the strip-shaped center of the Milky Way: this is the dense belt of stars running through the center of this image. The third word shows hints of a helical structure, but it's not clear or definite (hence the "s" in parentheses). Finally, the last word refers to ESO 245-5's similarity to the Magellanic Clouds, two nearby dwarf galaxies of the Milky Way.
Compiled source: ScitechDaily