Canis Minor occupies only 183 square degrees ... This luminary glows at magnitude 2.9, making it the sky’s 149th-brightest star. When you go out at night, these two stars comprise the constellation.

Canis Minor the Little Dog is admittedly ... Neptune is magnitude 7.8 and a mere 2″ across, making it difficult to differentiate from a dim star in the turbulent air near the horizon.