Temperature
5770.0 K
5770.0 to 6351
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Stellar HostProfile
K2-258
Unclassified star • 661.9 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 130634730
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
1.03 Msun
1.03 to 1.21
Radius
1.37 Rsun
1.31 to 1.37
Luminosity
0.27 log(Lsun)
0.27 to 0.27
Distance
661.9 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.37 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-258
1.37 R☉
System Layout
Known planets
1 planets linked to this host
K2-258 b
Transit
◌
Discovery
2018
Period
19.09 days
Radius
3 R⊕
Mass
—
Eq. Temp
831 K
K2-258 b: A Neptune-Like World in a Distant System
K2-258 is a single-star system located 2160 light-years from Earth. Its host star has a mass of 1.03 solar masses, a radius of 1.37 solar radii, and a temperature of 5770 K. The star's reported radius estimate is larger than the Sun's. One planet is known to orbit this host.
That planet, K2-258 b, is a Neptune-like world discovered by the transit method in 2018, when it was observed passing in front of its star and causing a small dip in brightness. It completes one orbit every 19.1 days. Its radius is 3 Earth radii, larger than Earth's. A Neptune-like size classification compares radius with Earth's, placing such planets between 2.5 and 4 Earth radii.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed