Temperature
5899 K
5787 to 5899
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Stellar HostProfile
KELT-23 A
G2 V • 126.3 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
TIC: TIC 458478250
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: Johns et al. 2019 • System source: TICv8
Mass
0.94 Msun
0.94 to 1.07
Radius
1.00 Rsun
0.96 to 1.00
Age
6.40 Gyr
single adopted value
Luminosity
0.03 log(Lsun)
4.50e-3 to 0.03
Distance
126.3 pc
single adopted value
Spectral Type
G2 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.00 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
KELT-23 A
1.00 R☉
System Layout
Known planets
1 planets linked to this host
KELT-23 A b
Transit
◌
Discovery
2019
Period
2.26 days
Radius
14.83 R⊕
Mass
298.1 M⊕
Eq. Temp
1561 K
KELT-23 A and Its Jupiter-like Planet
KELT-23 A is a G2 V star 412 light-years away. It is a Sun-like main-sequence dwarf with 0.944 solar masses, 0.996 solar radii, and a temperature of 5900 K. It is 6.4 billion years old, making it older than the Sun. One known planet orbits this star.
KELT-23 A b is a Jupiter-like planet discovered by transit in 2019. It has an orbital period of 2.26 days. Its radius is 14.8 Earth radii, and its mass is 298 Earth masses. Both figures are larger than Earth's corresponding values. Its mean density is 0.504 g/cm³, which is 0.0914 times Earth's. A Jupiter-like planet exceeds 4 times Earth's radius. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness, and repeated dips help establish orbital periods.
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 |
|---|---|---|---|---|---|---|---|---|
| 5899 | 0.94 | 1.00 | 6.40 | — | — | 126.3 | Giacalone et al. 2025 | TICv8 |
| 5899 | 0.94 | 1.00 | 6.40 | 0.03 | G2 V | 126.3 | Johns et al. 2019 | TICv8 |
| 5787 | — | 0.96 | — | — | — | 126.3 | ExoFOP | TICv8 |
| 5787 | — | 1.00 | — | 4.51e-3 | — | 126.3 | Gaia DR2 | TICv8 |
| 5898 | 1.07 | 0.96 | — | 4.50e-3 | — | 126.3 | TICv8 | TICv8 |