Temperature
5610 K
5610 to 5726
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Stellar HostProfile
NGTS-18
G5 V • 1096.2 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 142211778
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Tilbrook et al. 2021 • System source: TICv8
Mass
1.00 Msun
1.00 to 1.02
Radius
1.39 Rsun
1.39 to 1.39
Age
10.84 Gyr
single adopted value
Distance
1096.2 pc
single adopted value
Spectral Type
G5 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.39 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
NGTS-18
1.39 R☉
System Layout
Known planets
1 planets linked to this host
NGTS-18 b
Transit
◌
Discovery
2021
Period
3.05 days
Radius
13.56 R⊕
Mass
130.0 M⊕
Eq. Temp
1381 K
NGTS-18 and Its Jupiter-Like Planet
NGTS-18 is a G-type main-sequence star located 3580 light-years away. It is a Sun-like dwarf with a spectral type of G5 V. The star has an age of 10.8 billion years, a mass of 1 solar masses, and a radius of 1.39 solar radii, making it larger than the Sun. Its temperature is 5610 K, which is cooler than the Sun's.
One planet orbits this star. NGTS-18 b was discovered by the transit method in 2021. It is a Jupiter-like planet, a size class defined by a radius exceeding 4 times Earth's. Its radius is 13.6 Earth radii, larger than Earth's, and its mass is 130 Earth masses, also larger than Earth's. The planet completes an orbit every 3.05 days. Its mean density is 0.287 g/cm³, which is 0.0521 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositystable
Surface Gravitydisputed
Metallicitystable
Spectral Typestable