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 | 0.0 | |
|
| ω | — | ||
| Tperi | — | ||
| Radius | 1.865 ( -0.044 +0.044 ) RJ | |
|
| Inclination | 87.6 (± 0.6) deg | |
|
| Update | 2018-10-26 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | Radial Velocity | ||
| Radius Detection Method | Primary Transit | ||
| Primary transit | 2456635.70832 (± 0.0001) JD | |
|
| Secondary transit | — | ||
| 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
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
Nonlinear tides in a homogeneous rotating planet or star: global simulations of the elliptical instability
2016
BARKER A.
MNRAS, 459, 939
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
