A giant edge-on lenticular, NGC 5084 cuts across Virgo like a warped blade of starlight
NGC 5084 is a lenticular galaxy (S0 edge-on) in the constellation Virgo, located about 146 million light-years away. Its apparent size is approximately 9.3 × 1.7 arcminutes, corresponding to a physical span of roughly 395,000 × 72,000 light-years, marking it as an exceptionally large and massive disk-dominated system. At an apparent magnitude of around 10.5, it presents a striking edge-on profile with a brilliant central bulge embedded in a vast, flattened stellar disk
Although classified as a lenticular, NGC 5084 is far from a simple smooth system. Its disk appears subtly warped and asymmetric, with faint outer extensions and irregular structure that suggest a long dynamical history shaped by accretion or past gravitational interaction. Along the outer edges, there also appear to be localized bluish star-forming regions and young stellar concentrations, adding an unexpected hint of residual activity to a galaxy type often thought of as more quiescent. That contrast—between an old, dominant stellar disk and pockets of younger structure—makes the system especially compelling
Also visible in the field is NGC 5087, an early-type lenticular galaxy (SA0?) located about 86 million light-years away. With an apparent size of roughly 2.5 × 2.2 arcminutes, it spans about 31,000 × 28,000 light-years, appearing compact and smooth beside the immense, razor-thin form of NGC 5084. The scene captures two very different expressions of galaxy evolution in the same region of space: one dominated by an enormous flattened stellar disk, the other by the smooth light profile of an early-type system
NGC 5084 is a galaxy defined not by flamboyant spiral arms, but by scale, geometry, and quiet structural drama—a system that looks almost impossibly long and thin, yet carries the mass and complexity of a truly enormous galactic structure
Imaged in LRGB on the ASA Astrosysteme AZ 1500 at Observatorio El Sauce, Chile.
Image Acquisition and Processing: Mike Selby