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Stellar HostProfile

HD 103720

K3 V • 45.54 pc

Records

5

literature rows

Planets

1

system count

References

6

distinct source labels

HD: HD 103720TIC: TIC 96195878HIP: HIP 58237

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: Moutou et al. 2015 • System source: TICv8

Temperature

5017 K

single adopted value

3 values • 1 distinct

Mass

0.79 Msun

0.79 to 0.83

2 values • 2 distinct

Radius

0.73 Rsun

0.73 to 0.78

3 values • 3 distinct

Age

3.80 Gyr

single adopted value

1 values • 1 distinct

Distance

45.54 pc

single adopted value

5 values • 1 distinct

Spectral Type

K3 V

Multiple classifications reported

K0 (1), K1 IV/V (1), K3 V (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 0.73 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

HD 103720

0.73 R☉

System Layout

Known planets

1 planets linked to this host

HD 103720 b

Radial Velocity

◌

Discovery

2014

Period

4.56 days

Radius

—

Mass

197.0 M⊕

Eq. Temp

—

HD 103720 and Its Planet

HD 103720 is a K3 V star 149 light-years away, with a spectral type indicating a main-sequence dwarf. Its reported age is 3.8 billion years, its mass is 0.794 solar masses, its radius is 0.73 solar radii, and its temperature is 5020 K. This star's mass and radius are smaller than the Sun's, and its temperature is cooler. One planet orbits this host.

HD 103720 b was discovered in 2014 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. The planet has a minimum mass of 197 Earth masses, larger than Earth's, and an orbital period of 4.56 days.

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

Temperaturestable

3 values • 1 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Agestable

1 values • 1 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

2 values • 2 distinct

Metallicitystable

2 values • 1 distinct

Spectral Typedisputed

3 values • 3 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
—————K1 IV/V45.54Michigan Catalog, Vol. 5TICv8
—————K045.54Cannon & Pickering 1918TICv8
50170.830.78—-0.46—45.54TICv8TICv8
50170.790.733.80—K3 V45.54Moutou et al. 2015TICv8
5017—0.78—-0.46—45.54Gaia DR2TICv8