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HR 858 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HR 858 b

Confirmed exoplanet · Super Earth

HR 858 b

Orbiting HR 858

Discovered in 2019 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic super earth catalog artwork; not a direct image of HR 858 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,019
Method: Transit
Radius: 2.004 R⊕
Mass: 3.55 M⊕
Orbit: 3.585287 days
Distance: 31.964 pc

Planet profile

Orbit and physical properties

Orbital period: 3.585287 days
Semi-major axis: 0.04888 AU
Eccentricity: 0
Radius: 2.004 Earth radii
Mass: 3.55 Earth masses
Mass provenance: Mass
Density: 2.44 g/cm³
Equilibrium temperature: 1,552 K
Insolation: 989.7 Earth flux

Host system

Star and system properties

Host star: HR 858
Stars in system: 2
Known planets in system: 3
Spectral type: F6 V
Stellar temperature: 6,354 K
Stellar radius: 1.258 R☉
Stellar mass: 1.204 M☉
Stellar metallicity: 0.025 dex
Stellar age: 2 Gyr
Distance: 31.964 parsecs
Right ascension: 02h51m56.39s
Declination: -30d48m50.62s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,019
Publication date: 2019-08
Discovery locale: Space
Facility: Transiting Exoplanet Survey Satellite (TESS)
Telescope: 0.1 m TESS Telescope
Instrument: TESS CCD Array
NASA Exoplanet Archive: Open composite record ↗

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