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HD 21749 c | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 21749 c

Confirmed exoplanet · Terrestrial

HD 21749 c

Orbiting GJ 143

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

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of HD 21749 c — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,019
Method: Transit
Radius: 0.892 R⊕
Mass: 3.7 M⊕
Orbit: 7.78993 days
Distance: 16.32 pc

Planet profile

Orbit and physical properties

Orbital period: 7.78993 days
Semi-major axis: 0.0695 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 0.892 Earth radii
Mass: 3.7 Earth masses
Mass provenance: Mass
Density: 31.93 g/cm³
Equilibrium temperature: 701 K
Insolation: 305.9425 Earth flux

Host system

Star and system properties

Host star: GJ 143
Stars in system: 1
Known planets in system: 2
Spectral type: K4.5
Stellar temperature: 4,640 K
Stellar radius: 0.695 R☉
Stellar mass: 0.73 M☉
Stellar metallicity: 0.003 dex
Stellar age: 3.8 Gyr
Distance: 16.32 parsecs
Right ascension: 03h27m00.05s
Declination: -63d30m00.60s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,019
Publication date: 2019-04
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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