A subtly misaligned spiral whose quiet structure reveals a galaxy built through past disruption rather than symmetry
NGC 4698 is an unbarred spiral galaxy of morphological type SA(s)ab located in the constellation Virgo. Unlike more prominent grand-design spirals, this system is intrinsically low in contrast: its spiral arms are smooth, loosely defined, and relatively faint, with only modest pockets of star formation. The dust lanes are present but do not carve sharply through the disk, and the outer regions fade gradually into a diffuse, low surface brightness envelope. This gives the galaxy a continuous, almost seamless luminosity profile rather than strong structural boundaries
One of its most remarkable features is the internal misalignment between the bulge and the disk. The central stellar bulge rotates on a different axis than the surrounding disk, a rare configuration that points to a past accretion or merger event. This decoupling also softens the visual transition between core and disk, reducing the usual contrast break seen in more typical spirals and contributing to the galaxy’s overall smooth appearance.
NGC 4698 lies at a redshift-independent distance of approximately 73.2 million light-years. It spans about 4.0 arcminutes on the sky, corresponding to a physical diameter of roughly 85,000 light-years, and shines at an apparent magnitude near 11.5. As a member of the Virgo Cluster, it resides in a rich extragalactic environment, reflected in the numerous background galaxies scattered across the field
The galaxy is also classified as a Seyfert 2 system, indicating an active nucleus obscured by surrounding material. While the active core is not visually dominant, it adds another layer to the galaxy’s complex evolutionary history
Because of its smooth brightness distribution, low surface brightness outer disk, and lack of strong arm contrast, NGC 4698 presents a unique observational challenge. Its structure does not reveal itself through bold features, but rather through subtle gradients and delicate asymmetries, rewarding careful observation with a deeper appreciation of its unusual dynamics
Imaged in LRGB on the ASA Astrosysteme AZ 1500 at Observatorio El Sauce, Chile.
Image Acquisition and Processing: Mike Selby