Planet HAT-P-18 b
| Name | HAT-P-18 b | ||
| Planet Status | Confirmed | ||
| Discovered in | 2010 | ||
| Mass | 0.183 ( -0.032 +0.034 ) MJ |  |
|
| Mass*sin(i) | — | ||
| Semi-Major Axis | 0.0559 (± 0.0007) AU | |
|
| Orbital Period | 5.508029 (± 4.2e-06) day | |
+ |
| Eccentricity | 0.106 ( -0.084 +0.15 ) | |
|
| ω | 120.0 (± 56.0) deg | |
|
| Tperi | — | ||
| Radius | 0.947 ( -0.044 +0.044 ) RJ | |
|
| Inclination | 88.79 (± 0.21) deg | |
+ |
| Update | 2022-07-07 | ||
| Detection Method | Primary Transit | ||
| Mass Detection Method | — | ||
| Radius Detection Method | — | ||
| Primary transit | 2454715.02254 (± 0.00039) JD | |
+ |
| Secondary transit | 2454717.65 (± 0.13) JD | ||
| λ | 132.0 (± 15.0) deg | |
|
| Impact Parameter b | 0.324 (± 0.057) | |
|
| Time Vr=0 | — | ||
| Velocity Semiamplitude K | — | ||
| Calculated temperature | 841.0 K | |
+ |
| Measured temperature | — | ||
| Hottest point longitude | — | ||
| Geometric albedo | — | ||
| Surface gravity log(g/gH) | 2.734 | |
|
| Alternate Names | HAT-18b |
Star
HAT-P-18| Name | HAT-P-18 | ||
| Distance | 166.0 (± 9.0) pc | |
|
| Spectral type | K | ||
| Apparent magnitude V | 12.76 | ||
| Mass | 0.77 (± 0.031) MSun | |
|
| Age | 12.4 ( -6.4 +6.4 ) Gyr | |
|
| Effective temperature | 4870.0 (± 50.0) K | |
|
| Radius | 0.717 (± 0.026) RSun | |
|
| Metallicity [Fe/H] | 0.1 (± 8.0) | |
|
| Detected Disc | — | ||
| Magnetic Field | — | ||
| RA2000 | 17:05:24.0 | ||
| Dec2000 | +33:00:45 | ||
| Alternate Names | |||
| Planetary system | 1 planet |
Remarks
Alias GSC 2594-00646Alias 2MASS 17052315+3300450
More data
- Simbad
- Most recent references (ADS)
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 | 2018 - TSIARAS A. | |||
| He | Measurements | Detected | 2021 - PARAGAS K. | |||
Observability Predictor 
Related publications
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LINSSEN D., OKLOPCIC A. & MACLEOD M.
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2022
FU G., ESPINOZA N., SING D., LOTHRINGER J., DOS SANTOS L. et al.
ApJ. Letters, accepted
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2021
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2017
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2015
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The GAPS Programme with HARPS-N at TNG. III: The retrograde orbit of HAT-P-18b
2014
ESPOSITO M., COVINO E., MANCINI L., HARUTYUNYAN A., SOUTHWORTH J. & 20 co-authors
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2014
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2012
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2011
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Content
Content and Chapter 5
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