←Back to Stellar Hosts
Stellar HostProfile

HD 9174

G8 IV • 81.49 pc

Records

5

literature rows

Planets

1

system count

References

6

distinct source labels

HD: HD 9174HIP: HIP 6993TIC: TIC 439501096

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: Jenkins et al. 2017 • System source: TICv8

Temperature

5577 K

5556 to 5599

3 values • 3 distinct

Mass

1.03 Msun

0.99 to 1.03

2 values • 2 distinct

Radius

1.67 Rsun

1.67 to 1.73

3 values • 3 distinct

Age

9 Gyr

single adopted value

1 values • 1 distinct

Luminosity

0.38 log(Lsun)

0.38 to 0.41

3 values • 3 distinct

Distance

81.49 pc

single adopted value

5 values • 1 distinct

Spectral Type

G8 IV

Multiple classifications reported

G8 IV (2), G5 (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.67 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 9174

1.67 R☉

System Layout

Known planets

1 planets linked to this host

HD 9174 b

Radial Velocity

◌

Discovery

2016

Period

1179 days

Radius

—

Mass

352.8 M⊕

Eq. Temp

—

HD 9174 and Its Planet

HD 9174 is a star 266 light-years away with a spectral type of G8 IV. It has an age of 9 billion years, a mass of 1.03 solar masses, a radius of 1.67 solar radii, and a temperature of 5580 K. Its reported radius estimate is larger than the Sun's, and its reported temperature is cooler than the Sun's. One planet orbits this host.

That planet, HD 9174 b, was discovered in 2016 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 9174 b has a minimum mass of 353 Earth masses, a lower bound on its true mass, and an orbital period of 1180 days. Its minimum mass is larger than Earth's.

Provenance

Underlying measurements and references

Download JSONDownload CSV

Evidence Summary

Rows

5

Stellar refs

5

System refs

1

Distancestable

5 values • 1 distinct

Parallaxstable

5 values • 1 distinct

Temperaturedisputed

3 values • 3 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitydisputed

2 values • 2 distinct

Spectral Typedisputed

3 values • 2 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
5556—1.73—0.41—81.49Gaia DR2TICv8
55990.991.70—0.41—81.49TICv8TICv8
—————G581.49Cannon & Pickering 1918TICv8
55771.031.6790.38G8 IV81.49Jenkins et al. 2017TICv8
—————G8 IV81.49Michigan Catalog, Vol. 4TICv8