Temperature
5716 K
5716 to 5836
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Stellar HostProfile
K2-402
G2 • 523.1 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 393548451
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: Zink et al. 2021 • System source: TICv8
Mass
0.94 Msun
0.94 to 1.05
Radius
1.28 Rsun
1.25 to 1.28
Distance
523.1 pc
single adopted value
Spectral Type
G2
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.28 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-402
1.28 R☉
System Layout
Known planets
1 planets linked to this host
K2-402 b
Transit
◌
Discovery
2022
Period
17.27 days
Radius
2.68 R⊕
Mass
—
Eq. Temp
—
K2-402: A Sun-Like Star With a Neptune-Like World
K2-402 is a star located 1710 light-years away. Its spectral type is G2, which corresponds to a Sun-like class of star. The star has a mass of 0.944 solar masses, a radius of 1.28 solar radii, and a temperature of 5720 K. Its reported radius estimate is larger than the Sun's. One planet is known to orbit this host.
That planet is K2-402 b, a Neptune-like planet discovered by transit in 2022. Its reported radius estimate is 2.68 Earth radii, larger than Earth's. Such a size places it within the Neptune-like class. The planet completes one orbit, its year, in 17.3 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositystable
Surface Gravitydisputed
Metallicitystable
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5836 | 1.05 | 1.25 | — | 0.21 | — | 523.1 | TICv8 | TICv8 |
| 5716 | 0.94 | 1.28 | — | — | G2 | 523.1 | Zink et al. 2021 | TICv8 |
| 5716 | 0.94 | 1.28 | — | — | — | 523.1 | Christiansen et al. 2022 | TICv8 |