Temperature
4077 K
4077 to 4127
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Stellar HostProfile
HD 211970
Unclassified star โข 13.13 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
HIP: HIP 110443TIC: TIC 231704229HD: HD 211970
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: TICv8 โข System source: TICv8
Mass
0.64 Msun
0.54 to 0.64
Radius
0.60 Rsun
0.57 to 0.60
Luminosity
-1.05 log(Lsun)
-1.06 to -1.05
Distance
13.13 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.60 Rโ (circles scaled linearly by radius)
Sun
1.0 Rโ baseline
HD 211970
0.60 Rโ
System Layout
Known planets
1 planets linked to this host
HD 211970 b
Radial Velocity
โ
Discovery
2019
Period
25.20 days
Radius
โ
Mass
13 Mโ
Eq. Temp
โ
HD 211970 and Its Planet
HD 211970 is an M0V star 42.8 light-years away, an M-type dwarf that is small, cool, and red. Its reported mass is 0.64 solar masses and its reported radius is 0.597 solar radii, both smaller than the Sun's corresponding values. The star's temperature is 4080 K, cooler than the Sun's. One planet is known to orbit this host.
That planet, HD 211970 b, was discovered in 2019 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 211970 b has a minimum mass of 13 Earth masses, a lower bound on its true mass, and an orbital period of 25.2 days. Its minimum mass is larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitystable
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 4127 | 0.61 | โ | โ | โ | K7 V | 13.13 | Feng et al. 2019 | TICv8 |
| 4077 | 0.64 | 0.60 | โ | -1.05 | โ | 13.13 | TICv8 | TICv8 |
| โ | โ | โ | โ | โ | K5 | 13.13 | Cannon & Pickering 1918 | TICv8 |
| โ | โ | โ | โ | โ | K7 V (k) | 13.13 | Gray et al. 2006 | TICv8 |
| โ | โ | โ | โ | โ | M0 V | 13.13 | Michigan Catalog, Vol. 1 | TICv8 |
| 4126.7 | โ | 0.57 | โ | -1.06 | โ | 13.13 | Gaia DR2 | TICv8 |
| 4106 | 0.54 | 0.59 | โ | -1.05 | M0V | 13.13 | Turnbull 2015 | TICv8 |
| โ | โ | โ | โ | โ | K5.0 | 13.13 | Hawley et al. 1996 | TICv8 |