STF 2262 (Tau Ophiuchi) is a quadruple star system located 167 light-years away from the Sun. The primary component A is a subgiant of spectral class F4IV with a mass of 1.54 solar masses. Component A is also a spectroscopic binary with an orbital period of 184 days. The first companion B is a yellow-white main-sequence star of spectral class F5V with a mass of 1.29 solar masses. Components A and B orbit around their center of mass with a period of 257 years. The second companion C is a yellow main-sequence star of spectral class G1V. The gravitational relationship between components AB and C is uncertain. However, some sources indicate that component C is almost certainly a physical member of the system (Shaya, Olling).

100mm - STF 2262 is a relatively close binary with a separation of only 1.5". The separation could be challenging for a small telescope. Despite initial concerns, resolving components AB was smooth but required high magnification. At 225x, a clear and surprisingly wide gap between components A and B became apparent. Both components appeared slightly yellowish to me. Component C, with a separation of approximately 100" and a brightness of 11.3 mag, is easily visible. It forms a position angle of 125° with the primary component, but color differentiation is not feasible at this separation.