HD 3 is a triple star located 139 parsecs (450 ly) away in the constellation Andromeda. The primary component, with a spectral type of A1Vn and apparent magnitude of 6.71, is just on the limit of naked-eye visibility under the best conditions on Earth. The secondary and tertiary components have apparent magnitudes of 10.53 and 13.5 respectively.
Coordinates: 00h 05m 09.90s, +45° 13′ 45.0″