OGLE-2017-BLG-0173L is a star with 0.4 times the mass of the Sun, and NaN times its radius. It is located 15345.64 light years away from the solar system.
OGLE-2017-BLG-0173L is known to have 1 exoplanets in orbit around it.
OGLE-2017-BLG-0173L b was discovered by the OGLE observatory, in 2018-01, using the microlensing method. Its semi-major axis is 3.91 astronomical units, as compared to Earth's which is 1 astronomical unit. The mass of OGLE-2017-BLG-0173L b is 3.272 times the mass of Earth. The radius of OGLE-2017-BLG-0173L b is 1.620 that of Earth. At 3.272 Earth masses, OGLE-2017-BLG-0173L b is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes. No Super Earths are known to exist in our solar system, but if it exists, the so-called Planet Nine could very well be a super Earth, as it is hypothesized to have a mass between five and ten Earth masses. With a mass below 5 Earth masses, and a semi-major axis of 3.913 astronomical units, which is outside the habitable zone of OGLE-2017-BLG-0173L, OGLE-2017-BLG-0173L b is likely an icy world.