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Stellar HostProfile

KELT-19 A

A8 V • 300.3 pc

Records

4

literature rows

Planets

1

system count

References

5

distinct source labels

TIC: TIC 425206121

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: Siverd et al. 2018 • System source: TICv8

Temperature

7500 K

7346 to 8065

4 values • 4 distinct

Mass

1.62 Msun

1.62 to 1.70

2 values • 2 distinct

Radius

1.83 Rsun

1.67 to 1.83

3 values • 3 distinct

Luminosity

0.98 log(Lsun)

0.89 to 0.98

2 values • 2 distinct

Distance

300.3 pc

single adopted value

4 values • 1 distinct

Spectral Type

A8 V

Consistent across records

A8 V (1)

Planets

1

Stable across source rows

1

Scale Comparison

Radius against the Sun

Current adopted radius: 1.83 R☉ (circles scaled linearly by radius)

Sun

1.0 R☉ baseline

KELT-19 A

1.83 R☉

System Layout

Known planets

1 planets linked to this host

◌

Discovery

2017

Period

4.61 days

Radius

21.41 R⊕

Mass

1293.6 M⊕

Eq. Temp

1935 K

KELT-19 A and Its Jupiter-Like Planet

KELT-19 A is a main-sequence A-type star located 979 light-years away. It is the more massive component of a two-star system, and one known planet orbits it. The host star's reported mass estimate is 1.62 solar masses, larger than the Sun's, and its reported radius estimate is 1.83 solar radii, also larger than the Sun's. At 7500 K, it is hotter than the Sun.

The one known planet, KELT-19 A b, is a Jupiter-like world discovered by the transit method in 2017. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. KELT-19 A b has a reported upper limit of 1293.5681 Earth masses, a radius of 21.4 Earth radii, larger than Earth's, and an orbital period of 4.61 days.

Provenance

Underlying measurements and references

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Evidence Summary

Rows

4

Stellar refs

4

System refs

1

Distancestable

4 values • 1 distinct

Parallaxstable

4 values • 1 distinct

Temperaturedisputed

4 values • 4 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Luminositydisputed

2 values • 2 distinct

Surface Gravitydisputed

3 values • 3 distinct

Metallicitydisputed

2 values • 2 distinct

Spectral Typestable

1 values • 1 distinct

ST TEFFST MASSST RADST AGEST LUMST SPECTYPESY DISTStellar RefSystem Ref
7440.81.701.67—0.89—300.3TICv8TICv8
8065—————300.3Gaia DR2TICv8
75001.621.83—0.98A8 V300.3Siverd et al. 2018TICv8
7346—1.67———300.3ExoFOPTICv8