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Stellar HostProfile

TOI-6478

M4.0+/-0.5 • 38.61 pc

Records

3

literature rows

Planets

1

system count

References

4

distinct source labels

TIC: TIC 332657786

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: Scott et al. 2025 • System source: TICv8

Temperature

3230 K

3230 to 3275

3 values • 2 distinct

Mass

0.23 Msun

0.20 to 0.23

2 values • 2 distinct

Radius

0.23 Rsun

0.23 to 0.23

3 values • 3 distinct

Age

6 Gyr

single adopted value

1 values • 1 distinct

Distance

38.61 pc

single adopted value

3 values • 1 distinct

Spectral Type

M4.0+/-0.5

Consistent across records

M4.0+/-0.5 (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.23 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

TOI-6478

0.23 R☉

System Layout

Known planets

1 planets linked to this host

TOI-6478 b

Transit

◌

Discovery

2025

Period

34.01 days

Radius

4.60 R⊕

Mass

—

Eq. Temp

204.4 K

TOI-6478: A Cool Red Dwarf and Its Jupiter-Like Companion

TOI-6478 is an M-type star 126 light-years from Earth, and it hosts one known planet. Its spectral type, M4.0+/-0.5, places it among the cooler, redder stars, with a reported temperature of 3230 K. The star's reported mass estimate is 0.23 solar masses and its reported radius estimate is 0.234 solar radii, both smaller than the Sun's. Its age carries a reported lower limit of 6 billion years.

The one planet detected around TOI-6478 is TOI-6478 b, found by the transit method in 2025. During a transit, a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. TOI-6478 b completes an orbit every 34 days. Its radius is 4.6 Earth radii, larger than Earth's, and that size places it above the Jupiter-like threshold of 4 Earth radii.

Provenance

Underlying measurements and references

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Evidence Summary

Rows

3

Stellar refs

3

System refs

1

Distancestable

3 values • 1 distinct

Parallaxstable

3 values • 1 distinct

Temperaturedisputed

3 values • 2 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositystable

1 values • 1 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
32300.230.236—M4.0+/-0.538.61Scott et al. 2025TICv8
3275—0.23———38.61ExoFOPTICv8
32750.200.23—-2.24—38.61TICv8TICv8