Using TESS & CHEOPS we found six sub-Neptune #exoplanets orbiting HD110067. This system is so interesting:
1) All 6 planets are in perfect chain of first-order resonance.
2) TESS only spotted 2 periodic planets & 4 with ambiguous periods. We used the resonance chain to predict the orbits of outer planets.
3) The star is the brightest host of a system of 4+ transiting planets, and one of the most characterisable with JWST
The paper can be found at https://www.nature.com/articles/s41586-023-06692-3 (on arXiv tomorrow)
My involvement included the initial TESS identification (I led the TESS candidate vetting session & pushed to rapidly upgrade it to TOI), leading the CHEOPS programme to hunt for planets d & e, and coordinating a global telescope campaign to confirm the orbit of planet f. I've written my account of the discovery in a blog here:
http://www.hughosborn.co.uk/2023/11/28/discovering-six-synchronised-sub-neptunes-around-hd110067/
@jsy1001 Thanks for the heads up - changed the link now (praise be to the "edit" button)