El Nath is Beta Tauri, apparent magnitude 1.65, at roughly 130 light years. It is a blue giant, spectral type B7, marking the tip of the northern horn of Taurus. Like Alpheratz it sits on a constellation boundary and was historically shared, once catalogued as Gamma Aurigae, the charioteer's foot, before it was assigned to the Bull. The Arabic name, al-natih, means the butting one, naming the horn directly. It lies near the anti-centre of the Galaxy, the point on the sky opposite the galactic core.
El Nath's shared history with Auriga is a genuine boundary dispute rather than a naming quirk: for centuries star atlases drew the charioteer's foot resting directly on the bull's horn, so the single star served double duty in two figures at once, and only the International Astronomical Union's 1930 fixing of official constellation boundaries settled the matter by assigning it to Taurus alone. El Nath lies close to the plane of the Milky Way, and the star fields around it are correspondingly rich, a favourable region for deep amateur observation once the eye moves away from the bright horn-tip itself. The anti-centre direction it marks, opposite the crowded star fields of the galactic core, is a comparatively sparse and quiet stretch of the Milky Way's disc by contrast.
Sources AstronomyAndrew Fraknoi, David Morrison, and Sidney C. Wolff (OpenStax) with Almagest (Mathematike Syntaxis)Claudius Ptolemy