Temperature
5510 K
5510 to 5576
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Stellar HostProfile
HD 39855
G6V • 23.26 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
HD: HD 39855HIP: HIP 27922 ATIC: TIC 160301040
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: Turnbull 2015 • System source: TICv8
Mass
0.85 Msun
0.85 to 0.97
Radius
0.79 Rsun
0.74 to 0.79
Luminosity
-0.28 log(Lsun)
-0.32 to -0.28
Distance
23.26 pc
single adopted value
Spectral Type
G6V
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.79 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
HD 39855
0.79 R☉
System Layout
Known planets
1 planets linked to this host
HD 39855 b
Radial Velocity
◌
Discovery
2019
Period
3.25 days
Radius
—
Mass
8.50 M⊕
Eq. Temp
—
HD 39855 and Its Planet
HD 39855 is a G6V star located 75.9 light-years away. Its spectral type marks it as a Sun-like, main-sequence dwarf. The star has a reported mass of 0.85 solar masses, a reported radius of 0.79 solar radii, and a temperature of 5510 K. Its reported mass and radius estimates are both smaller than the Sun's, and its reported temperature is cooler than the Sun's.
One planet is known to orbit this star. HD 39855 b was discovered in 2019 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. The planet's minimum mass is 8.5 Earth masses, a lower bound on its true mass and larger than Earth's. HD 39855 b completes an orbit in 3.25 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | G5 | 23.26 | Cannon & Pickering 1918 | TICv8 |
| 5575.5 | — | 0.74 | — | -0.32 | — | 23.26 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 23.26 | Nordstrom et al. 2004 | TICv8 |
| 5576 | 0.87 | — | — | — | G8 V | 23.26 | Feng et al. 2019 | TICv8 |
| 5510 | 0.85 | 0.79 | — | -0.28 | G6V | 23.26 | Turnbull 2015 | TICv8 |
| 5528 | 0.97 | 0.76 | — | -0.31 | — | 23.26 | TICv8 | TICv8 |
| — | — | — | — | — | G6 V | 23.26 | Michigan Catalog, Vol. 4 | TICv8 |
| — | — | — | — | — | G8 V Fe-0.7 | 23.26 | Gray et al. 2006 | TICv8 |