K2-137 b: an Earth-sized planet in a 4.3-hour orbit around an M-dwarf

• Published in: Monthly Notices of the Royal Astronomical Society
• Main Authors: Smith, A. M. S., Howard, A. W., Petigura, E.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Royal Astronomical Society 2018
• Subjects: planets and satellites: detection; planets and satellites: individual: K2-137 b; Norway; Observatorio; Iceland
• Online Access: https://doi.org/10.1093/mnras/stx2891

We report the discovery in K2's Campaign 10 of a transiting terrestrial planet in an ultra-short-period orbit around an M3-dwarf. K2-137 b completes an orbit in only 4.3 h, the second shortest orbital period of any known planet, just 4 min longer than that of KOI 1843.03, which also orbits...