
NGC 4590 is frequently observed by amateur astronomers and shows up as a faint patch of light. It has moderate brightness.
Right now it is at about 47° altitude and reaches 63° around 12:19 AM.
It stays above 30° for roughly 7 hours.
Observing conditions matter, contrast improves away from light pollution.
This object is better suited for experienced observers.
In small telescopes it remains mostly unresolved.