Temperature
4742 K
4620 to 5051.7
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Stellar HostProfile
K2-16
K3 V • 335.0 pc
Records
8
literature rows
Planets
3
system count
References
9
distinct source labels
TIC: TIC 281886199
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: Sinukoff et al. 2016 • System source: TICv8
Mass
0.68 Msun
0.67 to 0.73
Radius
0.66 Rsun
0.54 to 0.71
Distance
335.0 pc
single adopted value
Spectral Type
K3 V
Consistent across records
Planets
3
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.66 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-16
0.66 R☉
System Layout
Known planets
3 planets linked to this host
EPIC 201754305 d
Transit
◌
Discovery
2019
Period
2.72 days
Radius
1.03 R⊕
Mass
—
Eq. Temp
—
K2-16 b
Transit
◌
Discovery
2015
Period
7.62 days
Radius
2.02 R⊕
Mass
—
Eq. Temp
658 K
K2-16 c
Transit
◌
Discovery
2015
Period
19.08 days
Radius
2.54 R⊕
Mass
—
Eq. Temp
485 K
K2-16: A K-Type Dwarf with Three Known Planets
K2-16 is a K3 V star located 1090 light-years away. Its spectral type identifies it as a main-sequence dwarf. Its reported properties place it below the Sun in several respects: it has a mass of 0.68 solar masses, a radius of 0.66 solar radii, and a temperature of 4740 K. Its mass and radius are both smaller than the Sun's, and its temperature is cooler. Three planets orbit this host.
EPIC 201754305 d is an Earth-like world with a radius of 1.03 Earth radii and an orbital period of 2.72 days. Among the listed planets, it has the shortest year and the smallest radius. It was discovered by the transit method in 2019, which detects the slight dimming of a star as a planet crosses in front of it.
K2-16 b is a Super-Earth with a radius of 2.02 Earth radii and an orbital period of 7.62 days. Among the listed planets, it has the second-shortest year and the second-smallest radius. Its radius is larger than Earth's. It was discovered by transit in 2015.
K2-16 c is a Neptune-like planet with a radius of 2.54 Earth radii and an orbital period of 19.1 days. Among the listed planets, it has the longest year and the largest radius. Its radius is also larger than Earth's. Like the other two planets, it was discovered by transit, in 2015.
The three planets differ substantially in size, ranging from the Earth-like radius of EPIC 201754305 d to the Neptune-like radius of K2-16 c, and their orbital periods span from 2.72 days to 19.1 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 0.67 | — | — | — | — | 335.0 | Heller et al. 2019 | TICv8 |
| 4620 | — | 0.71 | — | — | — | 335.0 | Vanderburg et al. 2016 | TICv8 |
| 5051.7 | — | 0.54 | — | -0.76 | — | 335.0 | Gaia DR2 | TICv8 |
| 4627.1 | 0.73 | 0.70 | — | -0.69 | — | 335.0 | TICv8 | TICv8 |
| 4761 | 0.67 | 0.64 | — | — | — | 335.0 | Montet et al. 2015 | TICv8 |
| 4800 | 0.69 | 0.67 | — | — | — | 335.0 | Crossfield et al. 2016 | TICv8 |
| — | — | 0.54 | — | — | — | 335.0 | Kruse et al. 2019 | TICv8 |
| 4742 | 0.68 | 0.66 | — | — | K3 V | 335.0 | Sinukoff et al. 2016 | TICv8 |