Tags: Star.
OGLE-TR-123 is a binary stellar system containing one of the smallest main-sequence stars whose radius has been measured. It was discovered when the Optical Gravitational Lensing Experiment (OGLE) survey observed the smaller star eclipsing the larger primary. The orbital period is approximately 1.80 days.The smaller star OGLE-TR-123b is estimated to have a radius around 0.13 solar radii and a mass of around 0.085 solar masses or approximately 90 times Jupiter’s.