WASP-157b, a Transiting Hot Jupiter Observed with K2
  We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density with a mass of $0.57 \pm 0.10$ M$_{\rm Jup}$ and a radius of $1.06 \pm 0.05$ R$_{\rm Jup}$. We do not detect any rotational or phase-curve modulations, nor the secondary eclipse, with conservative semi-amplitude upper limits of 250 and 20 ppm, respectively. 
T. Mo\v{c}nik, D. R. Anderson, D. J. A. Brown, A. Collier Cameron, L.   Delrez, M. Gillon, C. Hellier, E. Jehin, M. Lendl, P...
astro-ph.EP