Temperature
5036.0 K
5006.3 to 5106
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Stellar HostProfile
K2-268
Unclassified star • 327.8 pc
Records
10
literature rows
Planets
5
system count
References
10
distinct source labels
TIC: TIC 444037742
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
0.84 Msun
0.84 to 0.84
Radius
0.80 Rsun
0.71 to 0.80
Luminosity
-0.43 log(Lsun)
-0.47 to -0.43
Distance
327.8 pc
single adopted value
Planets
5
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.80 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
K2-268
0.80 R☉
System Layout
Known planets
5 planets linked to this host
K2-268 b
Transit
◌
Discovery
2018
Period
2.15 days
Radius
1.50 R⊕
Mass
—
Eq. Temp
1136 K
K2-268 c
Transit
◌
Discovery
2018
Period
9.33 days
Radius
2.69 R⊕
Mass
—
Eq. Temp
696 K
K2-268 d
Transit
◌
Discovery
2021
Period
4.53 days
Radius
1.49 R⊕
Mass
—
Eq. Temp
888 K
K2-268 e
Transit
◌
Discovery
2021
Period
6.13 days
Radius
1.33 R⊕
Mass
—
Eq. Temp
801 K
K2-268 f
Transit
◌
Discovery
2021
Period
26.27 days
Radius
2.23 R⊕
Mass
—
Eq. Temp
492 K
K2-268 and Its Five Planets
K2-268 is a star located 1070 light-years away, and five planets have been found orbiting it. The star has a reported mass of 0.839 solar masses, a radius of 0.801 solar radii, and a temperature of 5040 K, making it less massive, smaller, and cooler than the Sun.
All five planets were detected by the transit method, in which a planet crosses in front of its star and causes a small dip in brightness; repeated dips reveal the orbital period. The planets are K2-268 b, K2-268 c, K2-268 d, K2-268 e, and K2-268 f.
K2-268 b is a Super-Earth discovered in 2018 with an orbital period of 2.15 days and a radius of 1.5 Earth radii. K2-268 c, also found in 2018, is Neptune-like, orbits every 9.33 days, and has a radius of 2.69 Earth radii. K2-268 d is Earth-like, was discovered in 2021, orbits every 4.53 days, and has a radius of 1.49 Earth radii. K2-268 e, another Earth-like planet found in 2021, orbits every 6.13 days with a radius of 1.33 Earth radii. K2-268 f, a Super-Earth discovered in 2021, has an orbital period of 26.3 days and a radius of 2.23 Earth radii.
Among these planets, K2-268 b has the shortest year and K2-268 f the longest, while K2-268 d has the second-shortest year and K2-268 c the second-longest. K2-268 e has the smallest radius and K2-268 c the largest, with K2-268 d second-smallest and K2-268 f second-largest. Every one of the five planets has a radius larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
10
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | 0.77 | — | — | — | 327.8 | Kruse et al. 2019 | TICv8 |
| — | — | 0.78 | — | — | — | 327.8 | Petigura et al. 2018 | TICv8 |
| — | — | — | — | — | — | 327.8 | Pope et al. 2016 | TICv8 |
| 5036.0 | 0.84 | 0.80 | — | -0.43 | — | 327.8 | TICv8 | TICv8 |
| — | — | 0.71 | — | — | — | 327.8 | Nardiello et al. 2016 | TICv8 |
| — | — | — | — | — | — | 327.8 | Barros et al. 2016 | TICv8 |
| 5106 | 0.84 | 0.78 | — | — | — | 327.8 | de Leon et al. 2021 | TICv8 |
| 5068 | 0.84 | 0.78 | — | — | — | 327.8 | Livingston et al. 2018 | TICv8 |
| 5006.3 | — | 0.77 | — | -0.47 | — | 327.8 | Gaia DR2 | TICv8 |
| — | — | 0.77 | — | — | — | 327.8 | Kruse et al. 2019 | TICv8 |