Temperature
5804 K
5787 to 5852
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Stellar HostProfile
HAT-P-55
Unclassified star • 511.4 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 311408969
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: Kang et al. 2024 • System source: TICv8
Mass
1.03 Msun
1.01 to 1.06
Radius
1.10 Rsun
1.01 to 1.10
Age
5.30 Gyr
4.20 to 5.30
Luminosity
0.10 log(Lsun)
0.06 to 0.10
Distance
511.4 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.10 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HAT-P-55
1.10 R☉
System Layout
Known planets
1 planets linked to this host
HAT-P-55 b
Transit
◌
Discovery
2015
Period
3.59 days
Radius
14.84 R⊕
Mass
189.4 M⊕
Eq. Temp
1367 K
HAT-P-55 b: A Jupiter-Like World in a Distant Star System
HAT-P-55 is a star located 1670 light-years away. It has an age of 5.3 billion years, and its mass is 1.03 solar masses. The star's radius is 1.11 solar radii, larger than the Sun's, and its temperature is 5800 K. One planet orbits this host.
That planet is HAT-P-55 b, a Jupiter-like world discovered in 2015 by the transit method, in which a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. Its radius is 14.8 Earth radii, larger than Earth's, and its mass is 189 Earth masses, also larger than Earth's. The planet completes one orbit, its year, in 3.59 days. Its mean density is 0.319 g/cm³, 0.058 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agedisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5852 | 1.06 | 1.07 | — | 0.08 | — | 511.4 | TICv8 | TICv8 |
| 5808 | 1.01 | 1.01 | 4.20 | — | — | 511.4 | Juncher et al. 2015 | TICv8 |
| 5804 | 1.03 | 1.10 | 5.30 | 0.10 | — | 511.4 | Kang et al. 2024 | TICv8 |
| 5808 | 1.01 | 1.01 | 4.20 | — | — | 511.4 | Bonomo et al. 2017 | TICv8 |
| 5852 | — | 1.07 | — | — | — | 511.4 | ExoFOP | TICv8 |
| 5787 | — | 1.07 | — | 0.06 | — | 511.4 | Gaia DR2 | TICv8 |