Temperature
5368 K
5340.5 to 5410
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Stellar HostProfile
K2-263
G9 V • 162.5 pc
Records
6
literature rows
Planets
1
system count
References
7
distinct source labels
TIC: TIC 21276520
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: Mortier et al. 2018 • System source: TICv8
Mass
0.88 Msun
0.88 to 0.93
Radius
0.85 Rsun
0.84 to 0.88
Age
7 Gyr
single adopted value
Luminosity
-0.26 log(Lsun)
-0.26 to -0.24
Distance
162.5 pc
single adopted value
Spectral Type
G9 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.85 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-263
0.85 R☉
System Layout
Known planets
1 planets linked to this host
K2-263 b
Transit
◌
Discovery
2018
Period
50.82 days
Radius
2.51 R⊕
Mass
15.40 M⊕
Eq. Temp
482 K
K2-263 b: A Neptune-Like Planet in a One-Planet System
K2-263 is a G9 V star located 530 light-years away. Its reported mass estimate is 0.88 solar masses and its radius estimate is 0.85 solar radii, both smaller than the Sun's corresponding values. The star's reported temperature is 5370 K, cooler than the Sun's, and its age is 7 billion years. One planet orbits this host.
That planet, K2-263 b, is Neptune-like. It was discovered in 2018 by the transit method, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness; repeated dips help establish orbital periods. K2-263 b has an orbital period of 50.8 days. Its radius estimate is 2.51 Earth radii, larger than Earth's, and its mass estimate is 15.4 Earth masses, also larger than Earth's. Its mean density is 5.35 g/cm³, 0.97 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
6
Stellar refs
6
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 5410 | — | 0.84 | — | — | — | 162.5 | Mayo et al. 2018 | TICv8 |
| 5368 | 0.88 | 0.85 | 7 | — | — | 162.5 | Bonomo et al. 2023 | TICv8 |
| 5368 | 0.88 | 0.85 | 7 | -0.26 | G9 V | 162.5 | Mortier et al. 2018 | TICv8 |
| 5340.5 | — | 0.88 | — | -0.25 | — | 162.5 | Gaia DR2 | TICv8 |
| — | — | 0.88 | — | — | — | 162.5 | Kruse et al. 2019 | TICv8 |
| 5363.7 | 0.93 | 0.88 | — | -0.24 | — | 162.5 | TICv8 | TICv8 |