STF 202 is a multiple physical star system located approximately 150 light-years from Earth. The primary component of the system (A) is a star of spectral type A0p (peculiar A-type star) with a mass of 2.55 times that of the Sun and a diameter of 2.45 times that of the Sun. The secondary component (B) is also a white star of spectral type A3m (mildly metal-rich structures) with a mass of 2.64 times that of the Sun and a diameter of 2.66 times that of the Sun. The orbital period of the components is estimated to be around 3200 years, and they are separated by distances ranging from 50 AU to 190 AU. It is assumed that each of these stars is itself a spectroscopic binary. The system also has a third physical companion (C). This is a main-sequence star of spectral type G1V, which is located 405" from AB on the sky at a position angle of 63°.

103mm - I was able to resolve components A and B with no major difficulties at 200x magnification, even under less-than-ideal conditions using a 103mm telescope. Despite having very similar spectral types, the components exhibit color contrast, though their observed colors differ significantly among various observers. I observed the primary component as white with a slight yellowish tint, companion B as orange, and companion C as yellowish.