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4 UMa b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/4 UMa b

Confirmed exoplanet · Gas Giant

4 UMa b

Orbiting 4 UMa

Discovered in 2006 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 4 UMa b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,006
Method: Radial Velocity
Radius: 12.6 R⊕
Mass: 2,511.480072 M⊕
Orbit: 270.27 days
Distance: 73.4603 pc

Planet profile

Orbit and physical properties

Orbital period: 270.27 days
Semi-major axis: 0.877 AU
Eccentricity: 0.453
Radius: 12.6 Earth radii
Mass: 2,511.480072 Earth masses
Mass provenance: Msini
Density: 6.9 g/cm³
Equilibrium temperature: 967.44 K
Insolation: 150.0929 Earth flux

Host system

Star and system properties

Host star: 4 UMa
Stars in system: 1
Known planets in system: 1
Spectral type: K1 III
Stellar temperature: 4,415 K
Stellar radius: 18.11 R☉
Stellar mass: 1.234 M☉
Stellar metallicity: -0.25 dex
Stellar age: 4.604 Gyr
Distance: 73.4603 parsecs
Right ascension: 08h40m12.67s
Declination: +64d19m40.98s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,006
Publication date: 2007-09
Discovery locale: Ground
Facility: Thueringer Landessternwarte Tautenburg
Telescope: 2.0 m Alfred Jensch Telescope
Instrument: Coude Echelle Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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