STF 1245 (HD 72945) is a quadruple star system located 82 light-years away. The primary component is HD 72945, a spectroscopic binary consisting of a yellow-white main sequence star of spectral type F8V, with a mass of 1.25 and a radius of 1.4 times that of the Sun, and a companion with a mass of 0.34 times that of the Sun. The components orbit each other with a period of 14.3 days and are separated by only 5.9 solar radii at minimum. The secondary component is also a binary system, HD 72946, where the primary component is a yellow main sequence star of spectral type G5V, with a mass of 1.02 and a radius of 0.97 times that of the Sun. In 2020, the discovery of a companion, a brown dwarf of spectral type L5, was confirmed. This brown dwarf is close to the limit for the ignition of thermonuclear reactions. It is located 6.5 AU from its parent star and orbits with a period of 16 years. The orbital period of HD 72945 and HD 72946 is over 2000 years, and they are separated by roughly 200 AU. They form a common proper motion (CPM) pair.

100mm: STF 1245 is a suitable target even for the smallest telescopes, as the components can be resolved at low magnifications. I observed the primary component as light yellow, and the secondary component had an orange tint. I observed at 150x magnification.