Temperature
5449 K
5343 to 5453
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Stellar HostProfile
HAT-P-51
Unclassified star • 440.1 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 61205803
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: Hartman et al. 2015 • System source: TICv8
Mass
0.98 Msun
0.95 to 0.98
Radius
1.04 Rsun
0.99 to 1.04
Age
8.20 Gyr
8.10 to 8.20
Luminosity
-0.07 log(Lsun)
-0.13 to -0.07
Distance
440.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.04 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HAT-P-51
1.04 R☉
System Layout
Known planets
1 planets linked to this host
HAT-P-51 b
Transit
◌
Discovery
2015
Period
4.22 days
Radius
13.51 R⊕
Mass
97.57 M⊕
Eq. Temp
1168.2 K
HAT-P-51 b: A Jupiter-Like World Around a Sun-Like Star
HAT-P-51 is a G7 star located 1440 light-years away, with one known planet in orbit. The host star is estimated to be 8.2 billion years old, with a mass of 0.976 solar masses and a radius of 1.04 solar radii, making it slightly less massive and slightly larger than the Sun. Its temperature is 5450 K, cooler than the Sun's.
The system's sole known planet, HAT-P-51 b, was discovered in 2015 by the transit method, which detects the small dip in a star's brightness when a planet passes in front of it. This Jupiter-like planet has a mass of 97.6 Earth masses and a radius of 13.5 Earth radii, both larger than Earth's corresponding values. Its mean density is 0.218 g/cm³, which is 0.0396 times Earth's. HAT-P-51 b completes one orbit in 4.22 days, a short period that places it close to its host star.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
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 |
|---|---|---|---|---|---|---|---|---|
| 5449 | 0.98 | 1.04 | 8.20 | -0.07 | — | 440.1 | Hartman et al. 2015 | TICv8 |
| — | — | — | — | — | G7 | 440.1 | Luo et al. 2018 | TICv8 |
| 5425.9 | 0.95 | 1.01 | — | -0.10 | — | 440.1 | TICv8 | TICv8 |
| 5453 | 0.96 | 0.99 | 8.10 | -0.10 | — | 440.1 | Kang et al. 2024 | TICv8 |
| 5425.9 | — | 1.01 | — | — | — | 440.1 | ExoFOP | TICv8 |
| 5449 | 0.98 | 1.04 | 8.20 | — | — | 440.1 | Bonomo et al. 2017 | TICv8 |
| 5343 | — | 1.01 | — | -0.13 | — | 440.1 | Gaia DR2 | TICv8 |