All 5,844 stored NASA emission metrics in the 22 October 2026 snapshot fit the original equation within a rounding bound

The NASA Exoplanet Archive calculation page shows a linear radius ratio in its emission spectroscopy metric (ESM). The source paper uses the square of that ratio. We tested all 5,844 stored ESM values in a 22 October 2026 snapshot of the Planetary Systems Composite Parameters table. All values fit the original equation within a conservative bound for rounding to three significant figures and then to one decimal place. None of the 5,275 positive stored values fits the displayed linear equation within the same bound. An exact Python rounding rule reproduces 5,843 stored values; the one exception remains inside the bound. The precision model was selected during inspection of the data. We also tested 906 transiting planets with radii below 1.5 Earth radii and no input limits. The original equation gives 25 ESM values at least 7.5. The displayed equation gives 759 and changes five members of the top 20. These counts use catalog central values and do not include physical errors. The result identifies a missing square in the fetched documentation and supports the stored metrics within the tested scope. The package contains the source snapshot, provenance, code, row results, rank tables, and figures. It provides a reproducible test for future metric calculations.

exoplanets · emission spectroscopy metric · NASA Exoplanet Archive · catalog validation · reproducible research · atmosphere targets