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OGLE-TR-122 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 7.3 days.
It was the smallest known star from 1948 to 1981. [105] TRAPPIST-1: 82,925: Hosts a planetary system with at least seven rocky planets. [106] LHS 2090: 83,500 [107] Teegarden's Star: 83,500 Has two potentially habitable planets. [108] VB 8: 84,450 [105] SPECULOOS-3: 85,570 Second-smallest star known to host a transiting exoplanet after TRAPPIST ...
The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following reference. [58] Asteroid spectral types are mostly Tholen, but some might be SMASS.
EBLM J0555-57Ab — is one of the smallest stars ever discovered. GY Andromedae — chemically peculiar variable star MACS J1149 Lensed Star 1 (or Icarus ) — second most distant star, 9 billion light years away.
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
A "baby" planet that astronomers recently observed some 430 light-years from Earth may be the youngest planet ever discovered. Forming an estimated 3 million years ago, the planet may seem old to us.
A preon star is a proposed type of compact star made of preons, a group of hypothetical subatomic particles. Preon stars would be expected to have huge densities, exceeding 10 23 kilogram per cubic meter – intermediate between quark stars and black holes.
Disintegrating planetesimal, likely one of several orbiting its star. Likely about one-tenth the mass of Ceres and ~200 km in radius. [4] Ceres: 0.0742 Shown for comparison: Pluto: 0.1863 Shown for comparison: Moon: 0.2725 Shown for comparison: Kepler-37b: 0.3098 +0.0059 −0.0076: Smallest known exoplanet. [5] [6] BD+05 4868 Ab ~0.314