HD 110067

[11] HD 110067, located 105 light-years away in the constellation Coma Berenices, is orbited by six known sub-Neptune exoplanets (b, c, d, e, f, g) with radii ranging from 1.94 R⊕ to 2.85 R⊕, and with densities (and solid cores) similar to that of gas giants in the Solar System.

[8] The two innermost exoplanets orbiting HD 110067, a bright K0-type star, were first detected by the TESS (NASA) space telescope, using the transit method, in 2020.

The result, possibly, of a passing star or planet or some other astronomical object capable of disrupting the nascent harmonic orbital dynamics.

The star and related planetary system are located 105 light years away, in the constellation Coma Berenices.

All of the planetary orbits in the HD 110067 system are closer to their star than distance between the planet Mercury and the Sun.

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. [ 12 ]