Temperature
5650 K
5650 to 5749
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Stellar HostProfile
NGTS-17
G4 V • 1040.3 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 1309019
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
1.02 Msun
1.02 to 1.03
Radius
1.34 Rsun
1.33 to 1.34
Age
9.22 Gyr
single adopted value
Distance
1040.3 pc
single adopted value
Spectral Type
G4 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.34 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
NGTS-17
1.34 R☉
System Layout
Known planets
1 planets linked to this host
NGTS-17 b
Transit
◌
Discovery
2021
Period
3.24 days
Radius
13.90 R⊕
Mass
242.8 M⊕
Eq. Temp
1457 K
NGTS-17 and Its Lone Known Planet
NGTS-17 is a G4 V star, a main-sequence dwarf, located 3390 light-years away. It has one known planet, NGTS-17 b, a Jupiter-like world detected by transit in 2021. The host star's radius of 1.34 solar radii is larger than the Sun's, while its temperature of 5650 K is cooler. Its mass is 1.02 solar masses and it is 9.22 billion years old.
NGTS-17 b orbits every 3.24 days. Its radius of 13.9 Earth radii exceeds Earth's, matching its Jupiter-like size classification, and its mass of 243 Earth masses also exceeds Earth's. Its mean density is 0.498 g/cm³, 0.0904 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