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