Discovery Method
Transit
Consistent across records
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ExoplanetDetail
NGTS-21 b
Host star NGTS-21 • 14.91 R⊕ • 1.54 d orbit
Records
2
archive rows
Discovery
2022
Transit
Radius
14.91 R⊕
default parameter set
Mass
750.1 M⊕
default parameter set
NGTS-21
1357 K equilibrium
Canonical Summary
Adopted planet values from the default parameter set
Values come from the archive's default parameter set. Missing values stay missing. Ranges and counts describe all source rows.
Selected source: Alves et al. 2022
Host Star
NGTS-21
Stable across source rows
Discovery Year
2022
Stable across source rows
Orbital Period
1.54 day
1.54 to 1.54
Semi-Major Axis
0.02 au
single adopted value
Radius
14.91 Rearth
13.03 to 14.91
Mass
750.1 Mearth
single adopted value
Density
1.25 g/cm**3
single adopted value
Equilibrium Temperature
1357 K
1214.6 to 1357
Scale Comparison
Radius against familiar reference worlds
Current adopted radius: 14.91 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
NGTS-21 b
14.91 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Underlying measurements and references
Evidence Summary
Rows
2
Refs
2
Methods
1
Discoverystable
Facilitystable
Periodstable
Radiusdisputed
Massstable
Eq. Tempdisputed
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2022 | Transit | Next-Generation Transit Survey (NGTS) | 20 cm NGTS telescope | 1.54 day | 13.03 Rearth | — | 1214.6 K | ExoFOP |
| 2022 | Transit | Next-Generation Transit Survey (NGTS) | 20 cm NGTS telescope | 1.54 day | 14.91 Rearth | 750.1 Mearth | 1357 K | Alves et al. 2022 |