TOI-1444 b Archives

Our homogeneously-derived geometric albedos for small (< 1.9 R⊕, plus LTT 9779 b) planets, compared to (bottom) select values derived for hot Jupiters compiled in K. Heng et al.

Revealing The Shiny Nature Of Lava Worlds: Small Planet Phase Curves With TESS

by Keith CowingSeptember 28, 2026September 28, 2026

[astro-ph.EP] Recent thermal emission observations suggest that `lava worlds’–Earth-sized exoplanets hot enough to melt their silicate surfaces–have atmospheres on a population-level.

Planet radius vs. mass for our sample (diamonds) are shown in the context of the rocky planet population (circles). Opaque diamonds represent our mass and radius measurements while translucent diamonds are the previously published values. Lines show mass-radius relations for planets with an Earth-like composition, a purely silicate-rock composition, and a purely iron composition (Zeng et al. 2019). Literature values come from the NASA Exoplanet Archive (Akeson et al. 2013) queried 4/12/2024 for planets with mass and radius measurements with fractional uncertainties

Astrogeology, Exoplanets, -moons, -comets, Status Report, Stellar Cartography

The Compositions of Rocky Planets in Close-in Orbits Tend to be Earth-Like

by Keith CowingOctober 2, 2024

Hundreds of exoplanets between 1-1.8 times the size of the Earth have been discovered on close in orbits. However, these planets show such a diversity in densities that some appear […]