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HD 11977 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 11977 b

Confirmed exoplanet · Gas Giant

HD 11977 b

Orbiting HD 11977

Discovered in 2005 using Radial Velocity. 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 HD 11977 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,005
Method: Radial Velocity
Radius: 12.7 R⊕
Mass: 2,080 M⊕
Orbit: 711 days
Distance: 67.9331 pc

Planet profile

Orbit and physical properties

Orbital period: 711 days
Semi-major axis: 1.93 AU
Eccentricity: 0.4
Radius: 12.7 Earth radii
Mass: 2,080 Earth masses
Mass provenance: Msini
Density: 5.58 g/cm³
Equilibrium temperature: 547.97 K
Insolation: 18.5126 Earth flux

Host system

Star and system properties

Host star: HD 11977
Stars in system: 1
Known planets in system: 1
Spectral type: G8 III/IV
Stellar temperature: 4,970 K
Stellar radius: 10.09 R☉
Stellar mass: 1.91 M☉
Stellar metallicity: -0.21 dex
Stellar age: 1.2 Gyr
Distance: 67.9331 parsecs
Right ascension: 01h54m56.34s
Declination: -67d38m49.15s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,005
Publication date: 2005-07
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: Multiple Telescopes
Instrument: FEROS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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