Status Report

A 4-Planet System Orbiting the K0V Star HD 141399

By SpaceRef Editor
April 30, 2014
Filed under , , ,

Steven S. Vogt, R. Paul Butler, Eugenio J. Rivera, Robert Kibrick, Jennifer Burt, Russell Hanson, Stefano Meschiari, Gregory W. Henry, Gregory Laughlin

(Submitted on 29 Apr 2014)

We present precision radial velocity (RV) data sets from Keck-HIRES and from Lick Observatory’s new Automated Planet Finder Telescope and Levy Spectrometer on Mt. Hamilton that reveal a multiple-planet system orbiting the nearby, slightly evolved, K-type star HD 141399. Our 91 observations over 10.5 years suggest the presence of four planets with orbital periods of 94.35, 202.08, 1070.35, and 3717.35 days and minimum masses of 0.46, 1.36, 1.22, and 0.69 Jupiter masses respectively. The orbital eccentricities of the three inner planets are small, and the phase curves are well sampled. The inner two planets lie just outside the 2:1 resonance, suggesting that the system may have experienced dissipative evolution during the protoplanetary disk phase. The fourth companion is a Jupiter-like planet with a Jupiter-like orbital period. Its orbital eccentricity is consistent with zero, but more data will be required for an accurate eccentricity determination.


11 pages, 13 figures, To appear in the Astrophysical Journal


Earth and Planetary Astrophysics (astro-ph.EP)

Cite as:

arXiv:1404.7462 [astro-ph.EP] (or arXiv:1404.7462v1 [astro-ph.EP] for this version)

Submission history

From: Gregory Laughlin 

[v1] Tue, 29 Apr 2014 19:07:34 GMT (1080kb,D)


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