ι2 Cancri - A triple star system that cannot be resolved even with a 30 cm telescope. Under good observing conditions, it is visible only as an elongated star, with a hint of a primary yellow and a secondary blue component.

Acubens (α Cancri) - Double star distinguishable only with a larger telescope. The companion is located 11.3" away from the primary component (4.25 mag), but it is about 1,000 times fainter and has a brightness of only 11.8 mag in the sky. The system is located at a distance of 164 light-years.

X Cancri - The variable star with a distinct red hue changes its magnitude from 5.6 to 7.5 mag approximately every 195 days, suitable for observation in binoculars. It is located near the star δ Cancri.

Tegmin (ζ Cancri) - The triple star, with its two most prominent components at magnitudes 5.6 and 6.2, are separated by 5.7", which can be observed with a 5 cm telescope. Their mutual orbital period is approximately 1,100 years. The brighter star itself is a close binary - its companion with a magnitude of about 6 can be resolved at a separation of 0.8". It can be well distinguished with a telescope with a 300 mm objective diameter. Its orbital period is 59.6 years, and in 1991, its separation was only 0.5".

R Cancri - The variable star of Mira Ceti type with magnitude changes from 6.1 to 11.8 and a period of 362 days.