3 papers
astro-ph.EP2025
The Radius, Composition, Albedo, and Absolute Magnitude of Planet Nine Based on Exoplanets with Teq less than 600 K and the Planet Nine Reference Population 3.0
David G. Russell, Terry L. White
Evidence suggests the existence of a large planet in the outer Solar System, Planet Nine, with a predicted mass of 6.6 +2.6 / -1.7 Earth masses (Brown et al., 2024). Based on mass…
astro-ph.IM2025
The Minimum Mass of Planets, Dwarf Planets, and Planetary-scale Satellites
David G. Russell
The International Astronomical Union definitions for Planet and Dwarf Planet both require that a body has sufficient mass to overcome rigid body forces and self gravitate into a ne…
astro-ph.EP2023
A sub-Saturn Mass-Radius Desert for Planets with Equilibrium Temperature Less than 600 K
David G. Russell
The sample of exoplanets from the NASA Exoplanet Archive with equilibrium temperature less than 600 K and with low uncertainty for both mass and radius measurements is found to hav…