Evidence item

The summary reports the 136-degree obliquity and identifies GJ 3090 b as the first known retrograde planet around an M dwarf. MEASUREMENT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 14627

Source: Upside down: GJ 3090 b the first retrograde exoplanet around an M dwarf detected with NIRPS · locator {} · excerpt hash sha256:513e773207d3f2a8ac519ae86ff572cc42bcd4205b66253537d093449b44fdad

We find that GJ 3090 b is the first known retrograde planet orbiting an M dwarf, excluding polar orbits (ψ=90°) at 2.5 σ. With a 3D obliquity of ψ=136+24−18 deg, this sub-Neptune is among the most highly misaligned known planets.