Temperature
6070 K
5843 to 6115
←Back to Stellar Hosts
Stellar HostProfile
HAT-P-31
Unclassified star • 344.1 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 320798691
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: Bonomo et al. 2017 • System source: TICv8
Mass
1.22 Msun
1.15 to 1.31
Radius
1.36 Rsun
1.36 to 1.50
Age
3.17 Gyr
single adopted value
Distance
344.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.36 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HAT-P-31
1.36 R☉
System Layout
Known planets
1 planets linked to this host
HAT-P-31 b
Transit
◌
Discovery
2011
Period
5.01 days
Radius
12.22 R⊕
Mass
721.5 M⊕
Eq. Temp
—
HAT-P-31 and Its Planet
HAT-P-31 is a star 1120 light-years away with an age of 3.17 billion years, a mass of 1.22 solar masses, a radius of 1.36 solar radii, and a temperature of 6070 K. Its reported mass and radius estimates are larger than the Sun's, and its reported temperature is hotter than the Sun's. One planet orbits this host.
HAT-P-31 b is a Jupiter-like planet discovered by transit in 2011. It has a mass of 721 Earth masses, roughly 2.27 times Jupiter's mass and larger than Earth's, and a radius of 12.2 Earth radii, larger than Earth's. Its mean density is 2.18 g/cm³, 0.396 times Earth's. The planet completes an orbit every 5.01 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 6115 | — | 1.47 | — | — | — | 344.1 | ExoFOP | TICv8 |
| 6115 | 1.15 | 1.47 | — | 0.43 | — | 344.1 | TICv8 | TICv8 |
| 6065 | 1.22 | 1.36 | — | 0.35 | — | 344.1 | Kipping et al. 2011 | TICv8 |
| 5843 | — | 1.50 | — | 0.37 | — | 344.1 | Gaia DR2 | TICv8 |
| 6065 | 1.31 | 1.39 | — | — | — | 344.1 | Stassun et al. 2017 | TICv8 |
| — | 1.22 | — | — | — | — | 344.1 | Knutson et al. 2014 | TICv8 |
| 6070 | 1.22 | 1.36 | 3.17 | — | — | 344.1 | Bonomo et al. 2017 | TICv8 |