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Stellar HostProfile

K2-149

M1.0 V • 123.7 pc

Records

3

literature rows

Planets

1

system count

References

4

distinct source labels

TIC: TIC 429035886

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: Hirano et al. 2018 • System source: TICv8

Temperature

3745 K

3717 to 3836.7

3 values • 3 distinct

Mass

0.59 Msun

0.58 to 0.59

2 values • 2 distinct

Radius

0.57 Rsun

0.57 to 0.59

3 values • 3 distinct

Luminosity

-1.31 log(Lsun)

-1.31 to -1.18

3 values • 3 distinct

Distance

123.7 pc

single adopted value

3 values • 1 distinct

Spectral Type

M1.0 V

Consistent across records

M1.0 V (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.57 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

K2-149

0.57 R☉

System Layout

Known planets

1 planets linked to this host

K2-149 b

Transit

◌

Discovery

2018

Period

11.33 days

Radius

1.64 R⊕

Mass

—

Eq. Temp

—

K2-149 and Its Super-Earth

K2-149 is an M-type dwarf, a small, cool red dwarf, lying 403 light-years away. Its spectral type, M1.0 V, places it in the coolest and reddest stellar class, and the trailing V marks it as a main-sequence dwarf. The star has a reported mass of 0.595 solar masses and a reported radius of 0.568 solar radii, and its reported temperature is 3750 K. One planet is known to orbit it.

That planet is K2-149 b, a Super-Earth discovered by transit in 2018. During a transit, the planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. K2-149 b completes an orbit every 11.3 days and has a radius of 1.64 Earth radii, making it larger than Earth. Its size classification, Super-Earth, describes its radius rather than its composition.

Provenance

Underlying measurements and references

Download JSONDownload CSV

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 • 3 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
37170.580.59—-1.22—123.7TICv8TICv8
3836.7—0.58—-1.18—123.7Gaia DR2TICv8
37450.590.57—-1.31M1.0 V123.7Hirano et al. 2018TICv8