44 Validated Planets from K2 Campaign 10
Journal article, 2018

We present 44 validated planets from the 10th observing campaign of the NASA K2 mission, as well as high-resolution spectroscopy and speckle imaging follow-up observations. These 44 planets come from an initial set of 72 vetted candidates, which we subjected to a validation process incorporating pixel-level analyses, light curve analyses, observational constraints, and statistical false positive probabilities. Our validated planet sample has median values of Rp = 2.2 R_earth , P_orb = 6.9 days, T_eq = 890 K, and J = 11.2 mag. Of particular interest are four ultra-short period planets (P_orb}≲ 1 day), 16 planets smaller than 2 R_earth, and two planets with large predicted amplitude atmospheric transmission features orbiting infrared-bright stars. We also present 27 planet candidates, most of which are likely to be real and worthy of further observations. Our validated planet sample includes 24 new discoveries and has enhanced the number of currently known super-Earths (R_p ≈ 1–2 R_earth), sub-Neptunes (Rp ≈ 2–4 R_earth, and sub-Saturns (Rp ≈ 4–8 R_earth) orbiting bright stars (J = 8–10 mag) by ∼4%, ∼17%, and ∼11%, respectively.

techniques: spectroscopic

planetary systems

planets and satellites: detection

techniques: photometric


J.H. Livingston

M. Endl

Fei Dai

W. D. Cochran

O. Barragan

D. Gandolfi

T. Hirano

S. Grziwa

Alexis M. S. Smith

S. Albrecht

J. Cabrera

Sz. Csizmadia

Jerome P. De Leon

H. Deeg

Ph. Eigmuller

A. Erikson

M.E. Everett

Malcolm Fridlund

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

A. Fukui

Eike W. Guenther

A. P. Hatzes

S.B. Howell

J. Korth

N. Narita

D. Nespral

G. Nowak

E. Palle

M. Pätzold

Carina Persson

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

J. Prieto-Arranz

H. Rauer

M. Tamura

V. Van Eylen

J.N. Winn

Astronomical Journal

0004-6256 (ISSN) 1538-3881 (eISSN)

Vol. 156 2 78

Exoplanets from space – CHEOPS and PLATO, ESA’s next two projects

Swedish National Space Board, 2017-01-01 -- 2022-12-31.

Subject Categories

Astronomy, Astrophysics and Cosmology


Basic sciences



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