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HD 21693 c | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 21693 c

Confirmed exoplanet · Neptune Like

HD 21693 c

Orbiting HD 21693

Discovered in 2019 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 21693 c — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,019
Method: Radial Velocity
Radius: 4.34 R⊕
Mass: 17.37 M⊕
Orbit: 53.7357 days
Distance: 33.255 pc

Planet profile

Orbit and physical properties

Orbital period: 53.7357 days
Semi-major axis: 0.2586 AU
Eccentricity: 0.07
Radius: 4.34 Earth radii
Mass: 17.37 Earth masses
Mass provenance: Msini
Density: 1.17 g/cm³
Equilibrium temperature: 492.36 K
Insolation: 9.2712 Earth flux

Host system

Star and system properties

Host star: HD 21693
Stars in system: 1
Known planets in system: 2
Spectral type: G8 V
Stellar temperature: 5,430 K
Stellar radius: 0.914378 R☉
Stellar mass: 0.8 M☉
Stellar metallicity: 0 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 33.255 parsecs
Right ascension: 03h27m12.97s
Declination: -58d19m23.78s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,019
Publication date: 2019-02
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 21693 c.

Generic neptune like catalog artwork; not a direct image of HD 21693 c — Apex Andromeda catalog artwork