Planet WASP-121 b

Name WASP-121 b
Planet Status Confirmed
Discovered in 2015
Mass 1.184 ( -0.064 +0.065 ) MJ
Mass*sin(i) 1.183 ( -0.064 +0.064 ) MJ
Semi-Major Axis 0.02544 (± 0.0005) AU
Orbital Period 1.2749255 (± 2.5e-07) day
Eccentricity 0.02 (± 0.015)
ω
Tperi
Radius 1.865 ( -0.044 +0.044 ) RJ
Inclination 87.6 (± 0.6) deg
Update 2019-01-09
Detection Method Primary Transit
Mass Detection Method Radial Velocity
Radius Detection Method Primary Transit
Primary transit 2456635.70832 (± 0.0001) JD
Secondary transit 2457778.67903 JD
λ 107.2 (± 5.0) deg
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 181.1 (± 6.4) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

WASP-121
Name WASP-121
Distance 270.0 (± 90.0) pc
Spectral type F6V
Apparent magnitude V 10.4
Mass 1.353 ( -0.079 +0.06 ) MSun
Age
Effective temperature 6460.0 (± 140.0) K
Radius 1.458 (± 0.03) RSun
Metallicity [Fe/H] 0.13 (± 0.09)
Detected Disc
Magnetic Field
RA2000 07:10:24.0
Dec2000 -39:05:51
Alternate Names
Planetary system 1 planet

More data

Atmospheric parameters

Temperatures

Data Source Type Result Value Result Figure Notes Reference

Molecules

Molecule Data Source Type Result Value Result Figure Notes Reference
H2O Measurements Detected 2016 - EVANS Th.
SH Measurements Detected 2018 - EVANS Th.
TiO Measurements Detected 2018 - EVANS Th.
Measurements Detected 2016 - EVANS Th.
VO Measurements Detected 2018 - EVANS Th.
Measurements Detected 2016 - EVANS Th.

Observability Predictor


Related publications

Cloud Atlas: Hubble Space Telescope Near-Infrared Spectral Library of Brown Dwarfs, Planetary-mass companions, and hot Jupiters
2019 MANJAVACAS E., APAI D., ZHOU Y., LEW B., SCHNEIDER G. et al.
Astron. J., 157, 101
paper  arxiv  

An emission spectrum for WASP-121b measured across the 0.8-1.1 micron wavelength range using the Hubble Space Telescope
2019 MIKAL-EVANS Th., SING D., GOYAL J., DRUMMOND B., CARTER A. et al.
MNRAS, in press
paper  arxiv  

Synergies between space telescopes in the photometric characterization of the atmospheres of Hot Jupiters
2019 SINGH V., SCANDARIATO G. & PAGANO I.
MNRAS, 486, 5867
paper  

Retrieval of the fluid Love number k2 in exoplanetary transit curves
2019 HELLARD H., CSIZMADIA Sz., PADOVAN S., RAUER H., CABRERA J. et al.
ApJ, 878, 119
paper  arxiv  

New Avenues for Thermal Inversions in hot Jupiters
2019 GANDHI S. & MADHUSUDHAN N.
MNRAS, 485, 5817
paper  arxiv  

Low albedos of hot to ultra-hot Jupiters in the optical to near-infrared transition regime
2019 MALLON M., KÖHLER J., ALEXOUDI X., von ESSEN C., GRANZER T. et al.
Astron. & Astrophys., 624, A62
paper  arxiv  

Swift UVOT near-UV transit observations of WASP-121 b
2019 SALZ M., SCHNEIDER P., FOSSATI L., CZESAL S., FRANCE K. & SCHMITT J.
Astron. & Astrophys., in press, 623
paper  arxiv  

The secondary transit of the hot Jupiter WASP-121b at 2 μm
2019 KOVACS G.L & KOVACS T.
Astron. & Astrophys., 625, A80
paper  arxiv  

Detectability of shape deformation in short-period exoplanets
2019 AKINSANMI B., BARROS S., SANTOS N., CORREIA A., MAXTED et al.
Astron. & Astrophys., 621, A117
paper  arxiv  

An optical transmission spectrum for the ultra-hot Jupiter WASP-121b measured with the Hubble Space Telescope
2018 EVANS Th., SING D., GOYAL J., NIKOLOV N., MARLEY M. et al.
Astron. J., 156, 283
paper  arxiv  

From thermal dissociation to condensation in the atmospheres of ultra hot Jupiters: WASP-121b in context
2018 PARMENTIER V., LINE M., BEAN J., MANSFIELD M., KREIDBERG L. et al.
Astron. & Astrophys., submitted
arxiv  

An ultrahot gas-giant exoplanet with a stratosphere
2017 EVANS Th., SING D., KATARIA T., GOYAL J., NIKOLOV N. et al.
Nature, 548, 58
paper  arxiv  

WASP-121 b: a hot Jupiter in a polar orbit and close to tidal disruption
2016 DELREZ L., SANTERNE A., ALMENARA J.-M., ANDERSON D., COLLIER-CAMERON A. et al.
MNRAS, 458, 4025
paper  arxiv   ADS

Detection of H2O and evidence for TiO/VO in an ultra hot exoplanet atmosphere
2016 EVANS Th., SING D., WAKEFORD H., NIKOLOV N., BALLESTER G. et al.
ApJ Letters, 822, L4
paper  arxiv  ADS  

Nonlinear tides in a homogeneous rotating planet or star: global simulations of the elliptical instability
2016 BARKER A.
MNRAS, 459, 939
paper  arxiv  ADS