Temperature
5103 K
5082 to 5160.0
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Stellar HostProfile
HD 216520
Unclassified star • 19.55 pc
Records
8
literature rows
Planets
2
system count
References
9
distinct source labels
HIP: HIP 112527HD: HD 216520TIC: TIC 264899051
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: Burt et al. 2021 • System source: TICv8
Mass
0.82 Msun
0.79 to 0.85
Radius
0.76 Rsun
0.76 to 0.79
Age
6 Gyr
single adopted value
Luminosity
-0.45 log(Lsun)
-0.45 to -0.40
Distance
19.55 pc
single adopted value
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.76 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 216520
0.76 R☉
System Layout
Known planets
2 planets linked to this host
HD 216520 b
Radial Velocity
◌
Discovery
2020
Period
35.45 days
Radius
—
Mass
10.26 M⊕
Eq. Temp
—
HD 216520 c
Radial Velocity
◌
Discovery
2020
Period
154.4 days
Radius
—
Mass
9.44 M⊕
Eq. Temp
—
HD 216520 and Its Two Known Planets
HD 216520 is a K2 star located 63.8 light-years from Earth. It has a reported age of 6 billion years, a mass of 0.82 solar masses, a radius of 0.76 solar radii, and a temperature of 5100 K. The star's reported mass and radius are smaller than the Sun's, and its temperature is cooler than the Sun's. Two planets are known to orbit this host.
HD 216520 b was discovered in 2020 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion. Its minimum mass is 10.3 Earth masses, larger than Earth's, and its orbital period is 35.5 days, the shortest among the listed planets. HD 216520 c, also found in 2020 by radial velocity, has a minimum mass of 9.44 Earth masses, larger than Earth's, and an orbital period of 154 days, the longest among the listed planets. Among the listed planets, HD 216520 b has the largest minimum mass and HD 216520 c has the smallest.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5140.4 | — | 0.77 | — | -0.43 | — | 19.55 | Gaia DR2 | TICv8 |
| 5144 | 0.79 | 0.79 | — | -0.40 | K2 | 19.55 | Turnbull 2015 | TICv8 |
| 5160.0 | 0.79 | 0.78 | — | — | — | 19.55 | Rosenthal et al. 2021 | TICv8 |
| 5082 | 0.85 | 0.79 | — | -0.42 | — | 19.55 | TICv8 | TICv8 |
| — | — | — | — | — | — | 19.55 | Wright et al. 2004 | TICv8 |
| 5103 | 0.82 | 0.76 | 6 | -0.45 | — | 19.55 | Burt et al. 2021 | TICv8 |
| — | — | — | — | — | K2 | 19.55 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | K0 V | 19.55 | Gray et al. 2003 | TICv8 |