3 Cet vs HIP 107

Real luminosity separates the pair by a factor of about 24: absolute magnitude −4.04 for 3 Cet, −0.58 for HIP 107. 3 Cet is the remoter of the pair at 2,091 light-years, roughly 3.9 times the 543 that separates us from HIP 107. By spectral type the pair divides into a K-type star for 3 Cet and an M-type star for HIP 107. HIP 107 trails in apparent brightness at magnitude +5.53 against +4.99, leaving 3 Cet around 1.6 times the brighter target.