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HN Peg b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HN Peg b

Confirmed exoplanet · Gas Giant

HN Peg b

Orbiting HN Peg

Discovered in 2006 using Imaging. 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 HN Peg b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,006
Method: Imaging
Radius: 11.7768 R⊕
Mass: 6,991.57 M⊕
Orbit: Not reported by the NASA Exoplanet Archive
Distance: 18.1186 pc

Planet profile

Orbit and physical properties

Orbital period: Not reported by the NASA Exoplanet Archive
Semi-major axis: 773 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 11.7768 Earth radii
Mass: 6,991.57 Earth masses
Mass provenance: Mass
Density: 23.5 g/cm³
Equilibrium temperature: 10.77 K
Insolation: 0 Earth flux

Host system

Star and system properties

Host star: HN Peg
Stars in system: 1
Known planets in system: 1
Spectral type: G0 V
Stellar temperature: 6,186 K
Stellar radius: 1.006954 R☉
Stellar mass: 1.08 M☉
Stellar metallicity: -0.036 dex
Stellar age: 0.3 Gyr
Distance: 18.1186 parsecs
Right ascension: 21h44m31.58s
Declination: +14d46m17.23s

Discovery

Detection and provenance

Discovery method: Imaging
Discovery year: 2,006
Publication date: 2007-01
Discovery locale: Space
Facility: Spitzer Space Telescope
Telescope: 0.85 m Spitzer Space Telescope
Instrument: IRAC Infrared Array Camera
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HN Peg b.

Generic gas giant catalog artwork; not a direct image of HN Peg b — Apex Andromeda catalog artwork