Every star in the Exoplanet Codex — measured, referenced, and open. Elemental abundances from high-resolution spectroscopy, tied to the planets they host.
The calibration anchor for all Codex measurements. Direct HARPS solar feed (ESO 1102.D-0954(A), PI Dumusque). Solar EW results published. Abundance charts live.
Metal-rich K dwarf hosting five planets including Janssen — a lava super-Earth with possible CO₂ atmosphere (JWST 2024). C/O ratio contested in the literature. We are measuring it.
Our nearest stellar neighbor. Candidate Saturn-mass planet detected by JWST MIRI coronagraph — re-observation August 2026. Abundances in progress. HARPS complete, HST/MAST downloading.
Nearest single Sun-like star. Metal-poor G8V with 4–5 super-Earth candidates near the habitable zone. Key metallicity anchor at [Fe/H] = −0.50.
First exoplanet detected via transit and first with an atmosphere detected (Na, from HST/STIS). A landmark system in exoplanet science.
The cobalt-blue hot Jupiter. Silicate glass rain, winds at 8700 km/h, and one of the most studied exoplanet atmospheres. Its K2V host is a key Codex metallicity comparison.
M dwarf with multiple planets. Gliese 581 e was one of the least massive exoplanets known at discovery. The only M dwarf in the current Codex target list.
G0V solar analogue with a Jupiter-mass planet at 3.34 AU in a near-circular orbit — an analogue of Jupiter itself around a slightly metal-poor sun.
Nearest star to Sol with a confirmed planet. Young K2V with a prominent debris disk — a solar system analogue. Eps Eri b is a Jupiter-mass planet at 3.4 AU.
The nearest star to Sol. Proxima b is a potentially habitable rocky planet in the stellar hab zone. An M5.5 flare star — tests the limits of the Codex pipeline.
One of the best solar analogues known. G5V, [Fe/H] ≈ −0.01, three confirmed super-Earth/Neptune-class planets. A near-solar metallicity benchmark for planet formation.
The star that started it all. Dimidium (51 Peg b) was the first confirmed exoplanet around a Sun-like star (Mayor & Queloz 1995, Nobel 2019). A slightly evolved solar twin with [Fe/H] = +0.20.