Temperature
5240 K
5181 to 5240
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Stellar HostProfile
HD 137388
Unclassified star • 40.48 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
HIP: HIP 76351TIC: TIC 407090552HD: HD 137388
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: Dumusque et al. 2011 • System source: TICv8
Mass
0.86 Msun
0.68 to 0.88
Radius
0.82 Rsun
0.82 to 0.90
Age
6.45 Gyr
single adopted value
Luminosity
-0.34 log(Lsun)
-0.34 to -0.28
Distance
40.48 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.82 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 137388
0.82 R☉
System Layout
Known planets
1 planets linked to this host
HD 137388 b
Radial Velocity
◌
Discovery
2011
Period
330 days
Radius
—
Mass
63.57 M⊕
Eq. Temp
—
HD 137388 and Its Planet
HD 137388 is a K2 IV star 132 light-years away with one known planet. The star is estimated to be 6.45 billion years old, with a mass of 0.86 solar masses and a radius of 0.82 solar radii. Its temperature is 5240 K, and its reported mass and radius estimates are each smaller than the Sun's, while its reported temperature is cooler than the Sun's.
The one planet orbiting this star is HD 137388 b, discovered in 2011 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 137388 b has a minimum mass of 63.6 Earth masses, a lower bound on its true mass rather than an ordinary mass estimate, and that minimum mass is larger than Earth's. Its orbital period is 330 days, the time it takes to complete one orbit, and it is the only listed planet's period.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5240 | 0.86 | 0.82 | 6.45 | -0.34 | — | 40.48 | Dumusque et al. 2011 | TICv8 |
| — | — | — | — | — | K2 IV | 40.48 | Gray et al. 2006 | TICv8 |
| — | — | — | — | — | — | 40.48 | Nordstrom et al. 2004 | TICv8 |
| 5197.5 | — | 0.90 | — | -0.28 | — | 40.48 | Gaia DR2 | TICv8 |
| 5181 | 0.68 | 0.88 | — | — | — | 40.48 | Stassun et al. 2017 | TICv8 |
| 5188.5 | 0.88 | 0.90 | — | -0.28 | — | 40.48 | TICv8 | TICv8 |