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Stellar HostProfile

Kepler-18

Unclassified star • 433.0 pc

Records

34

literature rows

Planets

3

system count

References

21

distinct source labels

TIC: TIC 273690178

Approximate color

from effective temperature

Canonical Summary

Adopted host values from all rows

Numeric fields use the median of non-null measurements. Disagreement stays visible through ranges, counts, and provenance.

Temperature

5356 K

5031.6 to 5487

27 values • 8 distinct

Mass

0.88 Msun

0.88 to 0.98

23 values • 8 distinct

Radius

1.05 Rsun

0.90 to 1.27

29 values • 11 distinct

Age

8.50 Gyr

2.04 to 10.72

6 values • 4 distinct

Luminosity

-0.17 log(Lsun)

-0.22 to -0.03

3 values • 3 distinct

Distance

433.0 pc

single adopted value

34 values • 1 distinct

Planets

3

Stable across source rows

3

Scale Comparison

Radius against the Sun

Current adopted radius: 1.05 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

Kepler-18

1.05 R☉

System Layout

Known planets

3 planets linked to this host

Discovery

2011

Period

14.86 days

Radius

Mass

Eq. Temp

Discovery

2011

Period

3.50 days

Radius

Mass

Eq. Temp

Discovery

2011

Period

7.64 days

Radius

Mass

2.76 M⊕

Eq. Temp

Provenance

Underlying measurements and references

Evidence Summary

Rows

34

Stellar refs

20

System refs

1

Distancestable

34 values • 1 distinct

Parallaxstable

34 values • 1 distinct

Temperaturedisputed

27 values • 8 distinct

Massdisputed

23 values • 8 distinct

Radiusdisputed

29 values • 11 distinct

Agedisputed

6 values • 4 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitydisputed

24 values • 6 distinct

Metallicitydisputed

17 values • 4 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
53590.930.95-0.17433.0TICv8TICv8
53850.98433.0Q1-Q6 KOI TableTICv8
53560.881.05433.0Q1-Q17 DR24 KOI TableTICv8
5031.61.02-0.22433.0Gaia DR2TICv8
53560.881.05433.0Q1-Q12 KOI TableTICv8
53560.881.05433.0Q1-Q12 KOI TableTICv8
53850.98433.0Q1-Q6 KOI TableTICv8
53590.95433.0ExoFOPTICv8
53850.940.988.50433.0Q1-Q8 KOI TableTICv8
53450.971.1110-0.03433.0Cochran et al. 2011TICv8
53560.881.05433.0Q1-Q16 KOI TableTICv8
53850.940.988.50433.0Q1-Q8 KOI TableTICv8
433.0Q1-Q17 DR25 Supplemental KOI TableTICv8
54870.941.0610.72433.0Morton et al. 2016TICv8
53560.881.05433.0Q1-Q17 DR25 KOI TableTICv8
0.90433.0Hadden & Lithwick 2017TICv8
54410.980.902.04433.0Fulton & Petigura 2018TICv8
53850.98433.0Batalha et al. 2013TICv8
53560.881.05433.0Q1-Q17 DR24 KOI TableTICv8
54410.92433.0Berger et al. 2018TICv8
53850.98433.0Q1-Q6 KOI TableTICv8
53560.881.05433.0Q1-Q17 DR24 KOI TableTICv8
53560.881.05433.0Q1-Q16 KOI TableTICv8
53850.940.988.50433.0Q1-Q8 KOI TableTICv8
433.0Q1-Q17 DR25 Supplemental KOI TableTICv8
0.980.90433.0Ofir et al. 2025TICv8
53560.881.05433.0Q1-Q12 KOI TableTICv8
52891.27433.0Latham et al. 2005TICv8
433.0Q1-Q17 DR25 Supplemental KOI TableTICv8
53560.881.05433.0Q1-Q16 KOI TableTICv8
0.98433.0Weiss et al. 2024TICv8
53560.881.05433.0Q1-Q17 DR25 KOI TableTICv8
53560.881.05433.0Q1-Q17 DR25 KOI TableTICv8
0.881.05433.0Hadden et al. 2014TICv8