Tag Archive for 'Resonant chain'

The six planets in the HD 110067 system are all smaller than Neptune and revolve around their parent star in a very precise waltz: when the closest planet to the star makes three full revolutions around it, the second one makes exactly two during the same time; this is called a 3:2 resonance; the six planets form a resonant chain in pairs of 3:2, 3:2, 3:2, 4:3, and 4:3, resulting in the closest planet completing six orbits while the outer-most planet does one. Image credit: ESA / CC BY-SA 3.0 IGO.

Astronomers Discover Resonant System of Six Sub-Neptune Exoplanets around HD 110067

Nov 30, 2023 by Enrico de Lazaro

The bright nearby star HD 110067 hosts six transiting sub-Neptunes that follow a chain of resonant orbits, according to new research led by University...

An artist’s impression of the TOI-178 system. Image credit: L. Calçada / ESO / Spaceengine.org.

Nearby Orange Dwarf Hosts Unique System of Six Planets

Jan 25, 2021 by News Staff

The TOI-178 planetary system, a 7.1-billion-year-old system of six planets in the super-Earth to mini-Neptune range, five of which are locked in a rare...

This artist’s impression displays TRAPPIST-1 and its planets reflected in a surface. Image credit: NASA / R. Hurt / T. Pyle.

TRAPPIST-1 System’s Planetary Harmonies Save It from Destruction

May 11, 2017 by News Staff

The recently discovered TRAPPIST-1 planetary system has a unique configuration, according to new research from the University of Toronto, Canada. This...