HD 141399 explained

HD 141399 is a K-type main-sequence star 121 light-years away in the constellation of Boötes. Its surface temperature is 5602 K. HD 141399 is enriched in heavy elements compared to the Sun, with a metallicity Fe/H index of 0.36. Its age is unknown. The star has very low starspot activity.

Planetary system

In 2014, four planets orbiting HD 141399 were discovered by the radial velocity method. Planet HD 141399c is possibly located within the habitable zone.^[1] The planetary orbits are close to high-order mean-motion resonance and closely conform to the Titius–Bode law. Two additional planets, one with a period of 462.9 days, are suspected by analogy with the orbits of the Solar System planets. The planetary orbits around HD 141399 are expected to "jump" periodically on a timescale of a few million years between several quasi-stable configurations due to planet-planet interactions. HD 141399 is one of only two known planetary systems consisting of at least four massive gas giants (the other is the system of planets around the young star HR 8799).^[2]

Notes and References

10.1051/0004-6361/201527585 . Hébrard . Guillaume . Arnold . Luc . Forveille . Thierry . Correia . Alexandre C. M. . Laskar . Jacques . Bonfils . Xavier . Boisse . Isabelle . Díaz . Rodrigo F. . Hagelberg . Janis . Sahlmann . Johannes . Santos . Nuno C. . 11 . Nicola Astudillo-Defru, Simon Borgniet, François Bouchy, Vincent Bourrier, Bastien Courcol, Xavier Delfosse, Magali Deleuil, Olivier D. S. Demangeon, David Ehrenreich, João Gregório, N. Jovanovic, Olivier Labrevoir, Anne-Marie Lagrange, Christophe Lovis, J. Lozi, Claire Moutou, Guillaume Montagnier, Francesco Pepe, Javiera Rey, Alexandre Santerne, Damien Ségransan, Stéphane Udry, Michael Vanhuysse, A. Vigan, Paul A. Wilson . 1 April 2016 . The SOPHIE search for northern extrasolar planets. X. Detection and characterization of giant planets by the dozen . Astronomy and Astrophysics . 588 . A145 . 0004-6361 . 1602.04622 . 2016A&A...588A.145H . 55138055 .
Web site: Staff . News . 2023-10-31 . Giant Exoplanets Are Potential 'Agents of Chaos' in Multiplanet Systems, Astronomers Say Sci.News . 2023-11-05 . Sci.News: Breaking Science News . en-US.