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HAT-P-18 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HAT-P-18 b

Confirmed exoplanet · Gas Giant

HAT-P-18 b

Orbiting HAT-P-18

Discovered in 2010 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of HAT-P-18 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,010
Method: Transit
Radius: 10.704577 R⊕
Mass: 55.524623 M⊕
Orbit: 5.508029 days
Distance: 161.4 pc

Planet profile

Orbit and physical properties

Orbital period: 5.508029 days
Semi-major axis: 0.0559 AU
Eccentricity: 0.03
Radius: 10.704577 Earth radii
Mass: 55.524623 Earth masses
Mass provenance: Mass
Density: 0.249 g/cm³
Equilibrium temperature: 841 K
Insolation: 82.2407 Earth flux

Host system

Star and system properties

Host star: HAT-P-18
Stars in system: 1
Known planets in system: 1
Spectral type: K2
Stellar temperature: 4,870 K
Stellar radius: 0.717 R☉
Stellar mass: 0.77 M☉
Stellar metallicity: 0.1 dex
Stellar age: 12.4 Gyr
Distance: 161.4 parsecs
Right ascension: 17h05m23.13s
Declination: +33d00m44.37s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,010
Publication date: 2011-01
Discovery locale: Ground
Facility: HATNet
Telescope: Canon 200mm f/1.8L
Instrument: 2K CCD Sensor
NASA Exoplanet Archive: Open composite record ↗

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