Temperature
6747 K
5447 to 6747
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Stellar HostProfile
K2-278
Unclassified star • 786.4 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 422334505
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: Livingston et al. 2018 • System source: TICv8
Mass
1.40 Msun
0.98 to 1.40
Radius
1.61 Rsun
0.90 to 1.77
Distance
786.4 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.61 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-278
1.61 R☉
System Layout
Known planets
1 planets linked to this host
K2-278 b
Transit
◌
Discovery
2018
Period
3.33 days
Radius
2.98 R⊕
Mass
—
Eq. Temp
1711 K
K2-278 b: A Neptune-like World in a Distant System
K2-278 is a star 2570 light-years away with one known planet. The star has a mass of 1.4 solar masses and a radius of 1.61 solar radii, both larger than the Sun's. Its temperature is 6750 K, hotter than the Sun's.
The planet K2-278 b is Neptune-like and was discovered by transit in 2018. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. K2-278 b orbits every 3.33 days and has a radius of 2.98 Earth radii, larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | 1.77 | — | — | — | 786.4 | Kruse et al. 2019 | TICv8 |
| 6747 | 1.40 | 1.61 | — | — | — | 786.4 | Livingston et al. 2018 | TICv8 |
| — | — | 0.90 | — | — | — | 786.4 | Petigura et al. 2018 | TICv8 |
| 5557 | 0.98 | 1.71 | — | 0.40 | — | 786.4 | TICv8 | TICv8 |
| 5447 | — | 1.77 | — | 0.39 | — | 786.4 | Gaia DR2 | TICv8 |
| — | — | — | — | — | — | 786.4 | Pope et al. 2016 | TICv8 |