Temperature
5770 K
5770 to 5863
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Stellar HostProfile
HD 87646
G • 73.58 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
HIP: HIP 49522 ATIC: TIC 27064335HD: HD 87646
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: Ma et al. 2016 • System source: TICv8
Mass
1.12 Msun
single adopted value
Radius
1.55 Rsun
1.55 to 2.93
Distance
73.58 pc
single adopted value
Spectral Type
G
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.55 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 87646
1.55 R☉
System Layout
Known planets
1 planets linked to this host
HD 87646 b
Radial Velocity
◌
Discovery
2016
Period
13.48 days
Radius
—
Mass
3941.1 M⊕
Eq. Temp
—
HD 87646: A Sun-Like Star and Its Massive Planet
HD 87646 is a G-type star located 240 light-years away. A spectral type such as G classifies a star by its temperature class, and a G-type star is Sun-like. The star has a reported mass of 1.12 solar masses, a radius of 1.55 solar radii, and a temperature of 5770 K. Its mass estimate is larger than the Sun's, and its radius estimate is also larger than the Sun's.
One planet orbits this star: HD 87646 b. It was discovered in 2016 using 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 87646 b has a minimum mass of 3940 Earth masses and an orbital period of 13.5 days. A minimum mass is a lower bound on the planet's true mass, and this minimum mass is larger than Earth's and roughly 12.4 times Jupiter's mass.
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Stellar refs
5
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massstable
Radiusdisputed
Luminositystable
Surface Gravitystable
Metallicitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5863 | — | 2.93 | — | 0.96 | — | 73.58 | Gaia DR2 | TICv8 |
| 5770 | 1.12 | 1.55 | — | — | G | 73.58 | Ma et al. 2016 | TICv8 |
| 5837 | — | — | — | — | — | 73.58 | TICv8 | TICv8 |
| — | — | — | — | — | G0 | 73.58 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | — | 73.58 | Nordstrom et al. 2004 | TICv8 |