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Stellar HostProfile

K2-315

M(3.5+/-0.5) V • 56.97 pc

Records

3

literature rows

Planets

1

system count

References

4

distinct source labels

TIC: TIC 70298662

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: Niraula et al. 2020 • System source: TICv8

Temperature

3300 K

3208 to 3780.4

3 values • 3 distinct

Mass

0.17 Msun

0.17 to 0.17

2 values • 2 distinct

Radius

0.20 Rsun

0.20 to 0.21

2 values • 2 distinct

Age

1 Gyr

single adopted value

1 values • 1 distinct

Luminosity

-2.39 log(Lsun)

-2.39 to -2.39

2 values • 2 distinct

Distance

56.97 pc

single adopted value

3 values • 1 distinct

Spectral Type

M(3.5+/-0.5) V

Consistent across records

M(3.5+/-0.5) V (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.20 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

K2-315

0.20 R☉

System Layout

Known planets

1 planets linked to this host

K2-315 b

Transit

◌

Discovery

2020

Period

3.14 days

Radius

0.95 R⊕

Mass

—

Eq. Temp

460 K

K2-315 and Its Sub-Earth Planet

K2-315 is an M-type main-sequence star, a small, cool red dwarf, located 186 light-years away. It has a reported mass of 0.174 solar masses, a radius of 0.196 solar radii, and a temperature of 3300 K. Its age carries a reported lower limit of 1 billion years. Its reported mass, radius, and temperature are each smaller or cooler than the Sun's. One planet is known to orbit this host.

That planet, K2-315 b, was discovered in 2020 by the transit method, in which a planet passing in front of its star from our viewpoint causes a small dip in observed brightness. It is a Sub-Earth, a size class smaller than Earth, with a radius of 0.95 Earth radii. It completes an orbit every 3.14 days.

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

2 values • 2 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 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
32080.170.21—-2.39—56.97TICv8TICv8
33000.170.201-2.39M(3.5+/-0.5) V56.97Niraula et al. 2020TICv8
3780.4—————56.97Gaia DR2TICv8