Temperature
5742 K
5644 to 5742
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Stellar HostProfile
K2-409
G4 • 431.0 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 432261603
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
0.89 Msun
0.89 to 1
Radius
1.23 Rsun
1.23 to 1.28
Distance
431.0 pc
single adopted value
Spectral Type
G4
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.23 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-409
1.23 R☉
System Layout
Known planets
1 planets linked to this host
K2-409 b
Transit
◌
Discovery
2022
Period
1.91 days
Radius
2.48 R⊕
Mass
—
Eq. Temp
—
K2-409: A Sun-Like Star and Its Super-Earth
K2-409 is a G4 star located 1,410 light-years away. Its spectral type places it in the same broad temperature class as the Sun, making it a Sun-like star. Stellar measurements indicate a mass of 0.886 solar masses, a radius of 1.23 solar radii, and a temperature of 5740 K. The reported radius estimate is larger than the Sun's. The K2-409 system hosts one known planet, K2-409 b, discovered by the transit method in 2022.
K2-409 b is a Super-Earth with a radius of 2.48 Earth radii, larger than Earth's radius. Its size classification compares its radius with Earth's: a Super-Earth reaches 2.5 times Earth's radius. This planet completes an orbit around its host star in 1.91 days. The transit method detects such planets when they pass in front of their star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods.
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 |
|---|---|---|---|---|---|---|---|---|
| 5644 | 1 | 1.28 | — | 0.17 | — | 431.0 | TICv8 | TICv8 |
| 5742 | 0.89 | 1.23 | — | — | — | 431.0 | Christiansen et al. 2022 | TICv8 |
| 5742 | 0.89 | 1.23 | — | — | G4 | 431.0 | Zink et al. 2021 | TICv8 |