Planet K2-146 c

Name K2-146 c
Planet Status Confirmed
Discovered in 2019
Mass 0.02358 ( -0.00031 +0.00031 ) MJ
Mass*sin(i)
Semi-Major Axis 0.034 (± 0.001) AU
Orbital Period 4.00498 (± 0.00011) day
Eccentricity 0.075 (± 0.016)
ω 130.0 (± 5.0) deg
Tperi
Radius 0.195 ( -0.006 +0.006 ) RJ
Inclination 87.54 (± 0.04) deg
Update 2021-02-05
Detection Method Primary Transit
Mass Detection Method TTV
Radius Detection Method Primary Transit
Primary transit 2458204.1316 (± 0.0007) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names 2MASS J08400641+1905346 c, EPIC 211924657 c, WISE J084006.41+190533.1 c

Star

K2-146
Name K2-146
Distance 79.31 (± 0.45) pc
Spectral type M3.0 V
Apparent magnitude V 16.25
Mass 0.33 ( -0.01 +0.01 ) MSun
Age 5.0 ( --2.0 +4.0 ) Gyr
Effective temperature 3385.0 (± 70.0) K
Radius 0.33 (± 0.01) RSun
Metallicity [Fe/H] -0.02 (± 0.12)
Detected Disc
Magnetic Field
RA2000 08:40:06.4
Dec2000 +19:05:34
Alternate Names UCAC3 219-93463, 2MASS J08400641+1905346, K2-146, EPIC 211924657, WISE J084006.41+190533.1
Planetary system
2 planets

More data

Observability Predictor

Remarks

Hamann et al. (2019) : K2-146 c is librating in a 3:2 resonance withe K2-146 b

Related publications

K2-146: Discovery of Planet c, Precise Masses from Transit Timing, and Observed Precession
2019 HAMANN A., MONTET B., FABRYCKY D. & AGOL E.
Astron. J., 158, 133
paper  arxiv  

Exoplanets around Low-mass Stars Unveiled by K2
2018 HIRANO T., DAI F., GANDOLFI D., FUKUI A., LIVINGSTON J. et al.
ApJ, 155, 127
paper  arxiv