Temperature
4919 K
4753 to 4919
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Stellar HostProfile
HD 81688
Unclassified star • 85.72 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
HIP: HIP 46471HD: HD 81688TIC: TIC 105438311
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: Jofré et al. 2015 • System source: TICv8
Mass
1.76 Msun
1.07 to 2.10
Radius
10.08 Rsun
10.08 to 13
Age
1.48 Gyr
single adopted value
Luminosity
1.78 log(Lsun)
1.76 to 1.86
Distance
85.72 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 10.08 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 81688
10.08 R☉
System Layout
Known planets
1 planets linked to this host
HD 81688 b
Radial Velocity
◌
Discovery
2007
Period
183.9 days
Radius
—
Mass
525.7 M⊕
Eq. Temp
—
HD 81688 and Its Planet
HD 81688 is a G5 star 280 light-years away, with one known planet in orbit. The star is 1.48 billion years old, has a mass of 1.76 solar masses, a radius of 10.1 solar radii, and a temperature of 4920 K. Its reported mass and radius estimates are both larger than the Sun's, while its reported temperature is cooler than the Sun's.
The planet HD 81688 b was discovered in 2007 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. It has a minimum mass of 526 Earth masses and an orbital period of 184 days. That minimum mass is a lower bound on the planet's true mass and is larger than Earth's; it is roughly 1.65 times Jupiter's mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
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 |
|---|---|---|---|---|---|---|---|---|
| 4919 | 1.76 | 10.08 | 1.48 | 1.78 | — | 85.72 | Jofré et al. 2015 | TICv8 |
| 4797 | 1.07 | 11.13 | — | 1.78 | K0 III-IV | 85.72 | Teng et al. 2023 | TICv8 |
| 4919 | — | 10.39 | — | 1.76 | — | 85.72 | Gaia DR2 | TICv8 |
| — | 1.10 | — | — | — | — | 85.72 | Kunitomo et al. 2011 | TICv8 |
| — | — | — | — | — | G5 | 85.72 | Cannon & Pickering 1918 | TICv8 |
| 4753 | 2.10 | 13 | — | 1.86 | — | 85.72 | Sato et al. 2008 | TICv8 |
| 4800.0 | — | 10.87 | — | — | — | 85.72 | TICv8 | TICv8 |