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Transit · 2019

L 98-59 c

This world receives 12.7× the starlight Earth does; a year lasts 3.69 days; the light you see left it 35 years ago.

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Size
1.3 × Earth 
A year
3.69 days0.0309 AU
Temperature
253 °C526 K

About this world

L 98-59 c is a super-Earth orbiting L 98-59, a cool red dwarf (type M3V) 34.6 light-years from Earth. It is about 1.3 times the size of Earth and holds 2 Earth masses. It completes an orbit every 3.69 days at 0.031 AU from its star, closer than Mercury is to the Sun.

Its equilibrium temperature is about 526 K (253 °C): far too hot for liquid water on its surface. By the "cosmic shoreline", its star has probably stripped its atmosphere away, leaving bare rock. Its atmosphere has already been studied: 5 spectroscopic observations, all of them with the James Webb Space Telescope.

It was discovered in 2019 by transit with Transiting Exoplanet Survey Satellite (TESS). A planet crosses its star and dims it by a tiny, periodic fraction. L 98-59 has 5 known planets; the others are L 98-59 b, L 98-59 d, L 98-59 e and L 98-59 f.

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