←Back to Stellar Hosts
Stellar HostProfile

K2-257

Unclassified star • 64.01 pc

Records

3

literature rows

Planets

1

system count

References

4

distinct source labels

TIC: TIC 130640162

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

3725 K

3678 to 4089.5

3 values • 3 distinct

Mass

0.51 Msun

0.50 to 0.52

2 values • 2 distinct

Radius

0.50 Rsun

0.50 to 0.50

2 values • 2 distinct

Luminosity

-1.38 log(Lsun)

single adopted value

1 values • 1 distinct

Distance

64.01 pc

single adopted value

3 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.50 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

K2-257

0.50 R☉

System Layout

Known planets

1 planets linked to this host

K2-257 b

Transit

◌

Discovery

2018

Period

1.61 days

Radius

0.83 R⊕

Mass

—

Eq. Temp

789 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

2 values • 2 distinct

Luminositystable

1 values • 1 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
37250.520.50———64.01Livingston et al. 2018TICv8
4089.5—————64.01Gaia DR2TICv8
36780.500.50—-1.38—64.01TICv8TICv8