Temperature
5616 K
5440 to 5616
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Stellar HostProfile
WASP-19
Unclassified star • 268.3 pc
Records
14
literature rows
Planets
1
system count
References
14
distinct source labels
TIC: TIC 35516889
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: Cortés-Zuleta et al. 2020 • System source: TICv8
Mass
0.96 Msun
0.90 to 0.98
Radius
1.01 Rsun
0.94 to 1.03
Age
6.40 Gyr
5.50 to 11.50
Luminosity
-0.04 log(Lsun)
-0.10 to -0.04
Distance
268.3 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.01 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
WASP-19
1.01 R☉
System Layout
Known planets
1 planets linked to this host
WASP-19 b
Transit
◌
Discovery
2009
Period
0.79 days
Radius
15.86 R⊕
Mass
366.8 M⊕
Eq. Temp
2113 K
WASP-19: A Sun-Like Star and Its Jupiter-Like Planet
WASP-19 is a star located 875 light-years away. Its spectral type, G8 V, marks it as a main-sequence dwarf of the G temperature class, similar in kind to the Sun though somewhat cooler. The star is 6.4 billion years old, holds 0.965 solar masses, spans 1.01 solar radii, and has a temperature of 5620 K, which is cooler than the Sun's. One planet has been found around this host.
That planet, WASP-19 b, was discovered by the transit method in 2009. A transit occurs when a planet crosses in front of its star from our viewpoint, causing a small dip in observed brightness, and repeated dips help establish the planet's orbital period. WASP-19 b orbits its star in 0.789 days. It is a Jupiter-like planet, with a radius of 15.9 Earth radii and a mass of 367 Earth masses, roughly 1.15 times Jupiter's mass. Its radius and mass estimates are each larger than Earth's, and its mean density is 0.507 g/cm³, 0.0919 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
14
Stellar refs
13
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 0.97 | 0.99 | — | — | — | 268.3 | Lendl et al. 2013 | TICv8 |
| — | — | — | — | — | — | 268.3 | Hellier et al. 2011 | TICv8 |
| 5500 | — | — | — | — | G8 V | 268.3 | Hebb et al. 2010 | TICv8 |
| — | 0.94 | — | — | — | — | 268.3 | Knutson et al. 2014 | TICv8 |
| 5568 | 0.90 | 1.00 | — | — | — | 268.3 | Wong et al. 2016 | TICv8 |
| 5500 | 0.96 | 0.94 | 5.50 | — | — | 268.3 | Bonomo et al. 2017 | TICv8 |
| 5458.3 | — | 1.00 | — | -0.10 | — | 268.3 | Gaia DR2 | TICv8 |
| — | 0.97 | 0.99 | — | — | — | 268.3 | Hellier et al. 2011 | TICv8 |
| 5503 | 0.97 | 1.03 | — | -0.06 | — | 268.3 | TICv8 | TICv8 |
| 5568 | — | 1.03 | — | — | — | 268.3 | ExoFOP | TICv8 |
| 5440 | 0.90 | 1.00 | 11.50 | — | — | 268.3 | Tregloan-Reed et al. 2013 | TICv8 |
| 5591 | 0.98 | 0.99 | — | — | — | 268.3 | Mortier et al. 2013 | TICv8 |
| 5616 | 0.96 | 1.01 | 6.40 | -0.04 | — | 268.3 | Cortés-Zuleta et al. 2020 | TICv8 |
| 5460 | 0.94 | 1.02 | 10.20 | — | — | 268.3 | Mancini et al. 2013 | TICv8 |