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NGTS-21 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/NGTS-21 b

Confirmed exoplanet · Gas Giant

NGTS-21 b

Orbiting NGTS-21

Discovered in 2022 using Transit. 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 NGTS-21 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,022
Method: Transit
Radius: 14.907944 R⊕
Mass: 750.075041 M⊕
Orbit: 1.54339 days
Distance: 592.891 pc

Planet profile

Orbit and physical properties

Orbital period: 1.54339 days
Semi-major axis: 0.0236 AU
Eccentricity: 0
Radius: 14.907944 Earth radii
Mass: 750.075041 Earth masses
Mass provenance: Mass
Density: 1.25 g/cm³
Equilibrium temperature: 1,357 K
Insolation: 514.2853 Earth flux

Host system

Star and system properties

Host star: NGTS-21
Stars in system: 1
Known planets in system: 1
Spectral type: K3 V
Stellar temperature: 4,660 K
Stellar radius: 0.86 R☉
Stellar mass: 0.72 M☉
Stellar metallicity: -0.26 dex
Stellar age: 10.02 Gyr
Distance: 592.891 parsecs
Right ascension: 20h45m01.99s
Declination: -35d25m40.23s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,022
Publication date: 2022-12
Discovery locale: Ground
Facility: Next-Generation Transit Survey (NGTS)
Telescope: 20 cm NGTS telescope
Instrument: NGTS CCD array
NASA Exoplanet Archive: Open composite record ↗

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