MIRI/MRS Archives

β Pic d possible orbits and stability fractions. Left: Allowed orbits (pink) from Octofitter (W. Thompson et al. 2023) posteriors fit to astrometry and planetary RV (black) reported in Table 1, projected on-sky. Possible orbits are also shown in RV space. The locations of β Pic b and the approximate inner edge of the debris disk are plotted for reference. β Pic c is not shown as it falls nearly coincident with the star. Right: Fraction of stable orbits as a function of β Pic d mass and semi-major axis, as determined by the MEGNO chaos indicator from orbit posteriors integrated over 5 Myr. The semi-major axis range of the 68% percentile orbit posteriors is overlaid in pink. Orbital period ratios with β Pic b are shown as white dashed lines. The pink shaded region represents the 68th percentile of the orbital posteriors. The current astrometric baseline and RV precision do not strongly constrain the orbit; however, stability requirements suggest a semi-major axis of > 30 au. -- astro-ph.EP

Discovery Of An Exterior Third Planet Orbiting β Pictoris

by Keith CowingJuly 2, 2026July 2, 2026

[astro-ph.EP] We report the discovery of β Pictoris d (β Pic d), a third giant planet in the β Pictoris system, which now becomes only the second directly imaged system […]

MIRI/MRS

Discovery Of An Exterior Third Planet Orbiting β Pictoris

Juice Astrobiology Mission To Fly Past Earth For Third Gravity Assist

Planetary Health Check 2026 Finds Mounting Pressures Across Earth’s Life Support Systems – Reports And Proceedings

Prebiotic Peptide Formation Triggered By Urea-rich Warm Little Ponds On Early Earth

Thyles Rupes Region Of Mars

Do Himalayan-style Mountains Lie Under The Antarctic ice: Implication For The Gondwana Supermountains, The Rise Of Oxygen And The Cambrian Explosion?