Temperature
5860 K
5860 to 6054
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Stellar HostProfile
HAT-P-4
G1 V • 320.5 pc
Records
12
literature rows
Planets
1
system count
References
13
distinct source labels
TIC: TIC 138294130
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: Kovacs et al. 2007 • System source: TICv8
Mass
1.26 Msun
0.56 to 1.37
Radius
1.59 Rsun
1.57 to 1.62
Age
4.20 Gyr
3.90 to 4.60
Luminosity
0.43 log(Lsun)
0.43 to 0.47
Distance
320.5 pc
single adopted value
Spectral Type
G1 V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.59 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HAT-P-4
1.59 R☉
System Layout
Known planets
1 planets linked to this host
HAT-P-4 b
Transit
◌
Discovery
2007
Period
3.06 days
Radius
14.28 R⊕
Mass
213.3 M⊕
Eq. Temp
1686 K
HAT-P-4 and Its Jupiter-like Planet
HAT-P-4 is a star 1050 light-years away with a spectral type of G1 V, a Sun-like, main-sequence dwarf. It has an age of 4.2 billion years, a mass of 1.26 solar masses, a radius of 1.59 solar radii, and a temperature of 5860 K. Its reported mass, radius, and temperature estimates are all larger or hotter than the Sun's. One planet is known to orbit this host.
That planet, HAT-P-4 b, is a Jupiter-like world discovered by transit in 2007. It has a mass of 213 Earth masses, a radius of 14.3 Earth radii, and an orbital period of 3.06 days. Its reported radius and mass estimates are both larger than Earth's. With a mean density of 0.404 g/cm³, it is 0.0732 times as dense as Earth.
Provenance
Underlying measurements and references
Evidence Summary
Rows
12
Stellar refs
12
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 1.26 | 1.60 | — | — | — | 320.5 | Christiansen et al. 2011 | TICv8 |
| 5926.5 | — | 1.62 | — | 0.46 | — | 320.5 | Gaia DR2 | TICv8 |
| 5981 | — | 1.60 | — | — | — | 320.5 | ExoFOP | TICv8 |
| 5860 | 1.26 | 1.59 | 4.20 | 0.43 | G1 V | 320.5 | Kovacs et al. 2007 | TICv8 |
| — | 1.26 | — | — | — | — | 320.5 | Knutson et al. 2014 | TICv8 |
| 5860 | 1.25 | 1.60 | 4.60 | — | — | 320.5 | Bonomo et al. 2017 | TICv8 |
| 5860 | 1.25 | 1.60 | — | 0.43 | — | 320.5 | Torres et al. 2008 | TICv8 |
| — | 0.56 | 1.62 | — | — | — | 320.5 | Winn et al. 2011 | TICv8 |
| 5981.0 | 1.10 | 1.60 | — | 0.47 | — | 320.5 | TICv8 | TICv8 |
| 5860 | 1.27 | 1.60 | 3.90 | — | — | 320.5 | Southworth 2011 | TICv8 |
| 5907 | 1.26 | 1.59 | 4.20 | 0.43 | F | 320.5 | Ment et al. 2018 | TICv8 |
| 6054 | 1.37 | 1.57 | — | — | — | 320.5 | Mortier et al. 2013 | TICv8 |