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"HD 3167d: New Super-Earth Discovered around Nearby Star" Topic

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159 hits since 12 Jun 2017
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Tango0112 Jun 2017 11:15 a.m. PST

"Dr. Jessie Christiansen, a staff scientist at the NASA Exoplanet Science Institute, and colleagues have discovered a ‘super-Earth' exoplanet orbiting HD 3167, a bright star in the constellation Pisces. The discovery will be published in an upcoming issue of the Astronomical Journal ( preprint).

This illustration shows one possible scenario for the super-Earth HD 3167d. Image credit: NASA / JPL-Caltech.
HD 3167 is a K0-type dwarf star, also designated as EPIC 220383386 and 2MASS J00345752+0422531.

The star has a radius and a mass roughly 86% that of the Sun, and is approximately 8 billion years old.

At a distance of just 149 light-years, HD 3167 is one of the closest and brightest stars hosting multiple transiting planets.

In September 2016, Vanderburg et al announced they had spotted two small, short-period planets — HD 3167b with a period of 0.95 days and HD 3167c with a period of 29.8 days — in orbit around the star…"
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