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±0.03.^[5] Its age is unknown. The star has very low starspot activity.^[3]

Planetary system[edit]

In 2014, four planets orbiting HD 141399 were discovered by the radial velocity method.^[6] Planet HD 141399c is possibly located within the habitable zone.^[3] The planetary orbits are close to high-order mean-motion resonance^[7] and closely conform to 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.^[8] 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.^[7] 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).^[9]

The HD 141399 planetary system^[3]

Companion
(in order from star)

Mass

Semimajor axis
(AU)

Orbital period
(days)

Eccentricity

Inclination

Radius

0.451±0.030 $M$ _J

0.415±0.011

94.44±0.05

0.04±0.02

—

1.33±0.08 $M$ _J

0.689±0.02

201.99±0.08

0.048±0.009

—

1.18±0.08 $M$ _J

2.09±0.06

1069.8±6.7

0.074±0.025

—

0.66±0.10 $M$ _J

5.0±1.5

3370±90

<0.1

—

References[edit]

^ Kane, Stephen R. (2023). "Surrounded by Giants: Habitable Zone Stability within the HD 141399 System". The Astronomical Journal. 166 (5) 187. arXiv:2310.00860. Bibcode:2023AJ....166..187K. doi:10.3847/1538-3881/acfb01.

^ ^a ^b ^c "HD 141399". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 May 2021.

^ ^a ^b ^c ^d ^e ^f 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.; et al. (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. arXiv:1602.04622. Bibcode:2016A&A...588A.145H. doi:10.1051/0004-6361/201527585. ISSN 0004-6361. S2CID 55138055.{{cite journal}}: CS1 maint: multiple names: authors list (link)

^ ^a ^b ^c ^d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this sourceatVizieR.

^ ^a ^b ^c ^d ^e Sousa, S. G.; Adibekyan, V.; Delgado-Mena, E.; Santos, N. C.; Andreasen, D. T.; Ferreira, A. C. S.; Tsantaki, M.; Barros, S. C. C.; Demangeon, O.; Israelian, G.; Faria, J. P.; Figueira, P.; Mortier, A.; Brandão, I.; Montalto, M.; Rojas-Ayala, B.; Santerne, A. (2018), "SWEET-Cat updated", Astronomy & Astrophysics, 620: A58, arXiv:1810.08108, Bibcode:2018A&A...620A..58S, doi:10.1051/0004-6361/201833350, S2CID 119374557

^ ^a ^b ^c Vogt, Steven S.; Butler, R. Paul; Rivera, Eugenio J.; Kibrick, Robert; Burt, Jennifer; Hanson, Russell; Meschiari, Stefano; Henry, Gregory W.; Laughlin, Gregory (2014), "A Four-Planet System Orbiting the K0V Star Hd 141399", The Astrophysical Journal, 787 (2): 97, arXiv:1404.7462, Bibcode:2014ApJ...787...97V, doi:10.1088/0004-637X/787/2/97, S2CID 10477331

^ ^a ^b Agnew, Matthew T.; Maddison, Sarah T.; Horner, Jonathan (2018), "Prospecting for exo-Earths in multiple planet systems with a gas giant", Monthly Notices of the Royal Astronomical Society, 481 (4): 4680–4697, arXiv:1809.03730, doi:10.1093/mnras/sty2509

^ Allen, Christine; Cordero-Tercero, Guadalupe; Lara, Patricia (2020), "The reliability of the Titius–Bode relation and its implications for the search for exoplanets", Publications of the Astronomical Society of Japan, 72 (2), arXiv:2003.05121, doi:10.1093/pasj/psz146