Three small transiting planets around the M dwarf host star LP 358-499

R. Wells, K. Poppenhaeger, C. A. Watson

Research output: Contribution to journalArticlepeer-review

265 Downloads (Pure)


We report on the detection of three transiting small planets around the low-mass star LP 358-499 (K2-XXX), using photometric data from the Kepler-K2 mission. Using multiband photometry, we determine the host star to be an early M dwarf with an age likely older than a Gigayear. The three detected planets K2-XXX b, c, and d have orbital periods of ca. 3, 4.9 and 11 days and transit depths of ca. 700, 1000 and 2000 ppm, respectively. We also report a planetary candidate K2-XXX e with a period of 26.6 days and a depth of ca. 1000 ppm, which may be at the inner edge of the stellar habitable zone, depending on the specific host star properties. Using the transit parameters and the stellar properties, we estimate that the innermost planet may be rocky. The system is suited for follow-up observations to measure planetary masses and JWST transmission spectra of planetary atmospheres.
Original languageEnglish
Pages (from-to)1-6
JournalMonthly Notices of the Royal Astronomical Society: Letters
Publication statusPublished - 14 Oct 2017


  • Astrophysics - Earth and Planetary Astrophysics


Dive into the research topics of 'Three small transiting planets around the M dwarf host star LP 358-499'. Together they form a unique fingerprint.

Cite this