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Stellar HostProfile

Gaia-4

Unclassified star • 73.48 pc

Records

2

literature rows

Planets

1

system count

References

3

distinct source labels

TIC: TIC 166669918

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: Stefánsson et al. 2025 • System source: TICv8

Temperature

4034 K

4034 to 4259.1

2 values • 2 distinct

Mass

0.64 Msun

0.64 to 0.67

2 values • 2 distinct

Radius

0.62 Rsun

0.58 to 0.62

2 values • 2 distinct

Age

6.80 Gyr

single adopted value

1 values • 1 distinct

Luminosity

-1.00 log(Lsun)

-1.01 to -1.00

2 values • 2 distinct

Distance

73.48 pc

single adopted value

2 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.62 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

Gaia-4

0.62 R☉

System Layout

Known planets

1 planets linked to this host

Gaia-4 b

Astrometry

◌

Discovery

2025

Period

571.3 days

Radius

—

Mass

3750.4 M⊕

Eq. Temp

—

Gaia-4 and Its Giant Planet

Gaia-4 is a star 240 light-years away with one known planet. The host star is 6.8 billion years old and has a mass of 0.644 solar masses, smaller than the Sun's. Its radius of 0.624 solar radii is likewise smaller than the Sun's, and its temperature of 4030 K is cooler than the Sun's.

The single planet, Gaia-4 b, was discovered by astrometry in 2025. It has a mass of 3750 Earth masses, larger than Earth's and roughly 11.8 times Jupiter's mass. Its orbital period is 571 days.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

2

Stellar refs

2

System refs

1

Distancestable

2 values • 1 distinct

Parallaxstable

2 values • 1 distinct

Temperaturedisputed

2 values • 2 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

Metallicitydisputed

2 values • 2 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
4259.10.670.58—-1.01—73.48TICv8TICv8
40340.640.626.80-1.00—73.48Stefánsson et al. 2025TICv8