Planet K2-18 b

Name K2-18 b
Planet Status Confirmed
Discovered in 2015
Mass 0.02807 ( -0.005 +0.0053 ) MJ
Mass*sin(i)
Semi-Major Axis 0.1429 ( -0.0065 +0.006 ) AU
Orbital Period 32.939623 ( -0.0001 +9.5e-05 ) day
Eccentricity 0.2 (± 0.08)
ω
Tperi
Radius 0.2114 (± 0.0196) RJ
Inclination 89.5785 ( -0.0088 +0.0079 ) deg
Update 2018-08-16
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2457264.39144 (± 0.00065) JD
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 3.55 ( -0.58 +0.57 ) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names EPIC 201912552 b

Star

K2-18
Name K2-18
Distance 34.0 (± 4.0) pc
Spectral type
Apparent magnitude V
Mass 0.413 (± 0.043) MSun
Age
Effective temperature 3503.0 (± 60.0) K
Radius 0.394 (± 0.038) RSun
Metallicity [Fe/H] 0.09 (± 0.09)
Detected Disc
Magnetic Field
RA2000 11:30:14.5
Dec2000 +07:35:18
Alternate Names EPIC 201912552
Planetary system 1 planet

More data


Related publications

The CARMENES Search for Exoplanets around M Dwarfs: A Low-mass Planet in the Temperate Zone of the Nearby K2-18
2018 SARKIS P., HENNING Th., KÜRSTER M., TRIFONOV T., ZECHMEISTER M. et al.
Astron. J., 155, 257
arxiv  

The CARMENES search for exoplanets around M dwarfs: A low-mass planet in the temperate zone of the nearby K2-18
2018 PAULA S., HENNING Th., MARTIN K., TRIFON T., ZECHMEISTER L., et al.
Astron. J., accepted
arxiv  

Characterization of the K2-18 multi-planetary system with HARPS: A habitable zone super-Earth and discovery of a second, warm super-Earth on a non-coplanar orbit
2017 CLOUTIER R., ASTUDILLO-DEFRU N., DOYON R., BONFILS X., ALMENARA J. et al.
Astron. & Astrophys., 608, A35
paper  arxiv   ADS  

Spitzer Observations Confirm and Rescue the Habitable-Zone Super-Earth K2-18b for Future Characterization
2016 BENNEKE B., WERNER M., PETIGURA E., KNUTSON H., DRESSING C. et al.
ApJ, 834, 187
paper  arxiv  ADS  

Stellar and Planetary Properties of K2 Campaign 1 Candidates and Validation of 17 Systems, Including a Planet Receiving Earth-like Insolation
2015 MONTET B., MORTON T., FOREMAN-MACKEY D., JOHNSON J., HOGG D. et 4 additional authors
ApJ, 809, 25
arxiv   paper   ADS