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Stellar HostProfile

17 Sco

K3 III • 125.0 pc

Records

2

literature rows

Planets

1

system count

References

3

distinct source labels

HIP: HIP 79540TIC: TIC 135596590

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: Tala Pinto et al. 2020 • System source: TICv8

Temperature

4157 K

4157 to 4364.1

2 values • 2 distinct

Mass

1.22 Msun

single adopted value

1 values • 1 distinct

Radius

25.92 Rsun

25.92 to 32.08

2 values • 2 distinct

Age

5.13 Gyr

single adopted value

1 values • 1 distinct

Luminosity

2.25 log(Lsun)

single adopted value

1 values • 1 distinct

Distance

125.0 pc

single adopted value

2 values • 1 distinct

Spectral Type

K3 III

Consistent across records

K3 III (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 25.92 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

17 Sco

25.92 R☉

System Layout

Known planets

1 planets linked to this host

17 Sco b

Radial Velocity

◌

Discovery

2020

Period

578.4 days

Radius

—

Mass

1373.0 M⊕

Eq. Temp

—

17 Sco b: A Giant Planet Orbiting a Cool Giant Star

17 Sco is a star 408 light-years away with one known planet. Its spectral type, K3 III, places it among the cooler, more evolved stars. The star is 5.13 billion years old, has a mass of 1.22 solar masses, and a radius of 25.9 solar radii, making it both more massive and larger than the Sun. Its temperature of 4160 K is cooler than the Sun's.

The single planet, 17 Sco b, was discovered in 2020 using the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. It has a minimum mass of 1370 Earth masses, or roughly 4.32 times Jupiter's mass, and orbits its star every 578 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

Massstable

1 values • 1 distinct

Radiusdisputed

2 values • 2 distinct

Agestable

1 values • 1 distinct

Luminositystable

1 values • 1 distinct

Surface Gravitystable

1 values • 1 distinct

Metallicitydisputed

2 values • 2 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
41571.2225.925.132.25K3 III125.0Tala Pinto et al. 2020TICv8
4364.1—32.08———125.0TICv8TICv8