Temperature
4498.1 K
4498.1 to 4882.9
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Stellar HostProfile
K2-281
Unclassified star • 458.1 pc
Records
5
literature rows
Planets
1
system count
References
6
distinct source labels
TIC: TIC 380884458
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 • System source: TICv8
Mass
0.71 Msun
0.71 to 0.82
Radius
0.86 Rsun
0.66 to 0.86
Luminosity
-0.57 log(Lsun)
-0.65 to -0.57
Distance
458.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.86 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-281
0.86 R☉
System Layout
Known planets
1 planets linked to this host
K2-281 b
Transit
◌
Discovery
2018
Period
8.69 days
Radius
8.18 R⊕
Mass
—
Eq. Temp
665 K
K2-281 b: A Distant Jupiter-Like World
K2-281 is a star located 1490 light-years away, and it hosts one known planet. The star has a reported mass of 0.71 solar masses, a radius of 0.856 solar radii, and a temperature of 4500 K. Each of these measurements is smaller or cooler than the Sun's corresponding value.
The planet K2-281 b was discovered by the transit method and announced in 2018. A transit occurs when a planet passes in front of its star from our viewpoint, dimming the light we see slightly. With a radius of 8.18 Earth radii, K2-281 b is larger than Earth. Its size class, Jupiter-like, indicates that its radius exceeds 4 times Earth's radius.
K2-281 b orbits its star every 8.69 days, giving it a short orbital period. That is the full span of its year.
Provenance
Underlying measurements and references
Evidence Summary
Rows
5
Stellar refs
5
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | 0.66 | — | — | — | 458.1 | Kruse et al. 2019 | TICv8 |
| 4812 | 0.82 | 0.76 | — | — | — | 458.1 | Livingston et al. 2018 | TICv8 |
| 4882.9 | — | 0.66 | — | -0.65 | — | 458.1 | Gaia DR2 | TICv8 |
| 4498.1 | 0.71 | 0.86 | — | -0.57 | — | 458.1 | TICv8 | TICv8 |
| — | — | 0.75 | — | — | — | 458.1 | Petigura et al. 2018 | TICv8 |