Planet WASP-21 b
| Name | WASP-21 b | ||
| Planet Status | Confirmed | ||
| Discovered in | 2010 | ||
| Mass | 0.3 ( -0.01 +0.01 ) MJ |  |
|
| Mass*sin(i) | — | ||
| Semi-Major Axis | 0.052 ( -0.00044 +0.00044 ) AU | |
|
| Orbital Period | 4.3225126 (± 2.2e-06) day | |
+ |
| Eccentricity | 0.0 | ||
| ω | — | ||
| Tperi | — | ||
| Radius | 1.21 ( -0.032 +0.032 ) RJ | |
|
| Inclination | 87.12 (± 0.24) deg | |
+ |
| Update | 2022-05-04 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | — | ||
| Radius Detection Method | — | ||
| Primary transit | 2454743.04217 (± 0.00065) 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 | — |
Star
WASP-21| Name | WASP-21 | ||
| Distance | 230.0 (± 30.0) pc | |
|
| Spectral type | G3V | ||
| Apparent magnitude V | 11.6 | ||
| Mass | 1.01 ( -0.025 +0.025 ) MSun | |
|
| Age | — | ||
| Effective temperature | 5800.0 (± 100.0) K | |
|
| Radius | 1.06 (± 0.04) RSun | |
|
| Metallicity [Fe/H] | -0.4 (± 0.1) | |
|
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 23:09:58.0 | ||
| Dec2000 | +18:23:46 | ||
| 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 |
| Na | Measurements | Detected | 2020 - ALDERSON L. | |||
Observability Predictor 
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