HD 141399

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.[4] Its age is unknown. The star has very low starspot activity.[2]

HD 141399
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 46m 53.8135s[1]
Declination 46° 59′ 10.5407″[1]
Apparent magnitude (V) 7.20
Characteristics
Evolutionary stage main-sequence star
Spectral type K0
B−V color index 0.73±0.04[2]
Astrometry
Radial velocity (Rv)-21.9±0.2[3] km/s
Proper motion (μ) RA: -108.119[3] mas/yr
Dec.: 6.040[3] mas/yr
Parallax (π)26.9888 ± 0.0146 mas[3]
Distance120.85 ± 0.07 ly
(37.05 ± 0.02 pc)
Details
Mass1.09±0.08[4] M☉
Radius1.46±0.15[5] R☉
Luminosity1.59±0.39[5] L☉
Surface gravity (log g)4.24±0.05[4] cgs
Temperature5602±34[4] K
Metallicity [Fe/H]0.36±0.03[4] dex
Rotation49±12[2]
Rotational velocity (v sin i)2.9±1.0[2] km/s
Other designations
BD+47 2267, Gaia DR2 1398218223733415552, HIP 77301, TYC 3490-928-1, GSC 03490-00928, 2MASS J15465382+4659105[1]
Database references
SIMBADdata

Planetary system

In 2014, four planets orbiting HD 141399 were discovered by the radial velocity method.[5] Planet HD 141399c is possibly located within the habitable zone.[2] The planetary orbits are close to high-order mean-motion resonance[6] 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.[7] 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.[6]

The HD 141399 planetary system[2]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.451±0.030 MJ 0.415±0.011 94.44±0.05 0.04±0.02 — —
c 1.33±0.08 MJ 0.689±0.02 201.99±0.08 0.048±0.009 — —
d 1.18±0.08 MJ 2.09±0.06 1069.8±6.7 0.074±0.025 — —
e 0.66±0.10 MJ 5.0±1.5 3370±90 <0.1 — —

References
  1. "HD 141399". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 May 2021.
  2. 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)
  3. 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 source at VizieR.
  4. 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, doi:10.1051/0004-6361/201833350, S2CID 119374557
  5. 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
  6. 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
  7. 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


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