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Stellar HostProfile

Gaia-5

Unclassified star • 41.18 pc

Records

2

literature rows

Planets

1

system count

References

3

distinct source labels

TIC: TIC 42004825

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

3447 K

3447 to 3493

2 values • 2 distinct

Mass

0.34 Msun

0.33 to 0.34

2 values • 2 distinct

Radius

0.34 Rsun

0.34 to 0.35

2 values • 2 distinct

Age

8.20 Gyr

single adopted value

1 values • 1 distinct

Luminosity

-1.83 log(Lsun)

-1.83 to -1.79

2 values • 2 distinct

Distance

41.18 pc

single adopted value

2 values • 1 distinct

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.34 R☉ • circles scaled linearly by radius

Sun

1.0 R☉ baseline

Gaia-5

0.34 R☉

System Layout

Known planets

1 planets linked to this host

Gaia-5 b

Astrometry

◌

Discovery

2025

Period

358.6 days

Radius

—

Mass

6633.1 M⊕

Eq. Temp

—

Gaia-5: A Nearby Star and Its Massive Planet

Gaia-5 is a star 134 light-years from Earth. It is 8.2 billion years old, with a mass of 0.339 solar masses and a radius of 0.345 solar radii, making both smaller than the Sun's. Its temperature of 3450 K is cooler than the Sun's. One planet orbits this host.

That planet, Gaia-5 b, was discovered in 2025 by astrometry, a method that tracks a star's slight wobble caused by an orbiting companion. Gaia-5 b has a mass of 6630 Earth masses and an orbital period of 359 days. Its mass is larger than Earth's and roughly 20.9 times Jupiter's mass.

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

Metallicitystable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
34470.340.348.20-1.83—41.18Stefánsson et al. 2025TICv8
34930.330.35—-1.79—41.18TICv8TICv8