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HD 109271 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 109271 b

Confirmed exoplanet · Neptune Like

HD 109271 b

Orbiting HD 109271

Discovered in 2013 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of HD 109271 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,013
Method: Radial Velocity
Radius: 4.31 R⊕
Mass: 17.162 M⊕
Orbit: 7.8543 days
Distance: 55.8716 pc

Planet profile

Orbit and physical properties

Orbital period: 7.8543 days
Semi-major axis: 0.079 AU
Eccentricity: 0.25
Radius: 4.31 Earth radii
Mass: 17.162 Earth masses
Mass provenance: Msini
Density: 1.18 g/cm³
Equilibrium temperature: 1,128.86 K
Insolation: 320.4393 Earth flux

Host system

Star and system properties

Host star: HD 109271
Stars in system: 1
Known planets in system: 2
Spectral type: G5 V
Stellar temperature: 5,783 K
Stellar radius: 1.294595 R☉
Stellar mass: 1.047 M☉
Stellar metallicity: 0.1 dex
Stellar age: 7.3 Gyr
Distance: 55.8716 parsecs
Right ascension: 12h33m35.38s
Declination: -11d37m17.47s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,013
Publication date: 2013-03
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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