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Stellar HostProfile

TOI-257

Unclassified star • 76.90 pc

Records

3

literature rows

Planets

1

system count

References

4

distinct source labels

HD: HD 19916TIC: TIC 200723869

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

6382.7 K

6095 to 6382.7

3 values • 3 distinct

Mass

1.34 Msun

1.28 to 1.41

2 values • 2 distinct

Radius

1.77 Rsun

1.77 to 1.87

3 values • 2 distinct

Luminosity

0.65 log(Lsun)

0.64 to 0.67

2 values • 2 distinct

Distance

76.90 pc

single adopted value

3 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.77 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

TOI-257

1.77 R☉

System Layout

Known planets

1 planets linked to this host

TOI-257 b

Transit

◌

Discovery

2021

Period

18.39 days

Radius

6.38 R⊕

Mass

—

Eq. Temp

972.4 K

Provenance

Underlying measurements and references

Evidence Summary

Rows

3

Stellar refs

3

System refs

1

Distancestable

3 values • 1 distinct

Parallaxstable

3 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 2 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

3 values • 3 distinct

Metallicitystable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
6382.71.281.77—0.67—76.90TICv8TICv8
60951.411.87—0.64—76.90Addison et al. 2021TICv8
6382.7—1.77———76.90ExoFOPTICv8