Delta<sup>2</sup> Canis Minoris is a single star in the constellation Canis Minor. Its name is a Bayer designation that is Latinized from ô<sup>2</sup> Canis Minoris, and abbreviated Delta<sup>2</sup> CMi or ô<sup>2</sup> CMi. An apparent visual magnitude of 5.57 means it is deemed visible to the naked eye but faint and requires a dark sky to view. Based on parallax measurements it is calculated to be distant from the Earth. It is drifting further away from the Sun with a line of sight velocity of +3 km/s.
The star figures from this part of the Milky Way galaxy as the more central of three that share the Delta designation (the greek-lettered catalog is that of Johann Bayer's 1603 Uranometria atlas of bright stars) in star atlases very close, southwest of Delta<sup>3</sup> Canis Minoris which is physically unrelated. The Flamsteed designation for this star is 8 Canis Minoris in John Flamsteed's 1712 star catalog.
This star is rotating rapidly; the projected rotational velocity is 117.6 km/s, which means that the equator of this star is rotating at this velocity or greater. By comparison, the Sun is a slow rotator with an equatorial azimuthal velocity of 2 km/s. ô<sup>2</sup> Canis Minoris has a stellar classification of F2 V, indicating that this is an F-type main-sequence star that is generating energy at its core through thermonuclear fusion of hydrogen. The effective temperature of the photosphere is about 7053 K, giving it the yellow-white hue that is characteristic of F-type stars. The radius of this star can be estimated indirectly based upon the measured brightness and color information, which suggests the star is about 86% larger than the Sun.
As of 2008, no companion has been suspected or found orbiting ô<sup>2</sup> Canis Minoris.