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Stellar HostProfile

TOI-157

G9 IV • 355.7 pc

Records

4

literature rows

Planets

1

system count

References

5

distinct source labels

TIC: TIC 140691463

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: Nielsen et al. 2020 • System source: TICv8

Temperature

5404 K

5390.9 to 5638

4 values • 3 distinct

Mass

0.95 Msun

0.95 to 1

2 values • 2 distinct

Radius

1.17 Rsun

1.11 to 1.17

4 values • 3 distinct

Age

12.82 Gyr

single adopted value

1 values • 1 distinct

Luminosity

0.02 log(Lsun)

-7.84e-3 to 0.05

3 values • 3 distinct

Distance

355.7 pc

single adopted value

4 values • 1 distinct

Spectral Type

G9 IV

Consistent across records

G9 IV (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.17 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

TOI-157

1.17 R☉

System Layout

Known planets

1 planets linked to this host

TOI-157 b

Transit

◌

Discovery

2020

Period

2.08 days

Radius

14.41 R⊕

Mass

375.0 M⊕

Eq. Temp

1588 K

TOI-157 and Its Jupiter-Like Planet

TOI-157 is a G9 IV star located 1160 light-years away. Its reported mass estimate is 0.948 solar masses, smaller than the Sun's, while its radius of 1.17 solar radii is larger, and its temperature of 5400 K is cooler. The star is 12.8 billion years old, and one planet is known to orbit it.

That planet, TOI-157 b, was discovered by transit in 2020. Its radius of 14.4 Earth radii is larger than Earth's, placing it in the Jupiter-like size class, which covers planets exceeding 4 times Earth's radius. Its mass of 375 Earth masses is also larger than Earth's and roughly 1.18 times Jupiter's mass. TOI-157 b completes an orbit in 2.08 days, and its mean density of 0.69 g/cm³ is 0.125 times Earth's.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

4

Stellar refs

4

System refs

1

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

4 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

4 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitydisputed

3 values • 3 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
5638—1.11———355.7ExoFOPTICv8
563811.11—0.05—355.7TICv8TICv8
54040.951.1712.820.02G9 IV355.7Nielsen et al. 2020TICv8
5390.9—1.14—-7.84e-3—355.7Gaia DR2TICv8