STF 3062 (V640 Cas) is a triple system located 70 light-years from the Sun. The primary component A is a G3V main-sequence star with a mass of 0.98 solar masses. Companion B is a spectroscopic binary, with its first component, Ba being a G9V main-sequence star with a mass of 0.95 solar masses, and its second component, Bb being a red dwarf of spectral class M2V with a mass of 0.22 solar masses. Components Ba and Bb orbit around their common center of mass with a period of 47 days, while components A and B orbit with a period of 107 years.

100mm - Finding STF 3062 is very easy; it is located just under a degree SSW of the star Beta Cassiopeiae. It is already a relatively close system with a separation of only 1.5". Under unfavorable observing conditions, there might be challenges with clear resolution. However, with a 100mm telescope at 180x magnification, I managed to distinctly resolve both components. Both components appeared white with a faint yellow tint.