Temperature
6670 K
6670 to 6840
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Stellar HostProfile
KELT-18
F4 V • 321.4 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
TIC: TIC 293687315
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: McLeod et al. 2017 • System source: TICv8
Mass
1.52 Msun
1.48 to 1.52
Radius
1.91 Rsun
1.91 to 1.92
Age
1.90 Gyr
single adopted value
Luminosity
0.81 log(Lsun)
0.81 to 0.86
Distance
321.4 pc
single adopted value
Spectral Type
F4 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.91 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
KELT-18
1.91 R☉
System Layout
Known planets
1 planets linked to this host
KELT-18 b
Transit
◌
Discovery
2017
Period
2.87 days
Radius
17.60 R⊕
Mass
375.0 M⊕
Eq. Temp
2085 K
KELT-18 and Its Jupiter-Like Planet
KELT-18 is a star 1050 light-years away with a spectral type of F4 V, a main-sequence star hotter than the Sun. Its reported temperature is 6670 K, and its reported mass and radius estimates are larger than the Sun's, at 1.52 solar masses and 1.91 solar radii. The star's age is 1.9 billion years. One planet orbits this host.
That planet is KELT-18 b, a Jupiter-like world discovered in 2017 by the transit method, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness. Its radius is 17.6 Earth radii, larger than Earth's, and its mass is 375 Earth masses, also larger than Earth's and roughly 1.18 times Jupiter's mass. KELT-18 b completes an orbit in 2.87 days. Its mean density is 0.379 g/cm³, 0.0688 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Stellar refs
5
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 6840 | 1.48 | 1.91 | — | 0.86 | — | 321.4 | TICv8 | TICv8 |
| 6670 | 1.52 | 1.91 | 1.90 | 0.81 | F4 V | 321.4 | McLeod et al. 2017 | TICv8 |
| 6840 | — | 1.91 | — | — | — | 321.4 | ExoFOP | TICv8 |
| 6767.7 | — | 1.92 | — | 0.84 | — | 321.4 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 321.4 | Rubenzahl et al. 2024 | TICv8 |