Temperature
3506 K
3386 to 3886.2
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Stellar HostProfile
TOI-270
M • 22.48 pc
Records
11
literature rows
Planets
3
system count
References
10
distinct source labels
TIC: TIC 259377017
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: Van Eylen et al. 2021 • System source: TICv8
Mass
0.39 Msun
0.36 to 0.40
Radius
0.38 Rsun
0.37 to 0.38
Luminosity
-1.71 log(Lsun)
-1.77 to -1.71
Distance
22.48 pc
single adopted value
Spectral Type
M
Multiple classifications reported
Planets
3
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.38 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-270
0.38 R☉
System Layout
Known planets
3 planets linked to this host
TOI-270: A Nearby Red Dwarf with Three Small Worlds
TOI-270 is an M-type star 73.3 light-years away, with a mass of 0.386 solar masses, a radius of 0.378 solar radii, and a temperature of 3510 K. Its reported mass and radius are smaller than the Sun's, and its reported temperature is cooler. Three planets are known to orbit this host. All three were found by the transit method in 2019, in which a planet passes in front of its star from our viewpoint and causes a small dip in observed brightness.
TOI-270 b is an Earth-like planet with a radius of 1.28 Earth radii, a mass of 1.48 Earth masses, and an orbital period of 3.36 days. Among the listed planets, it has the shortest year, the smallest radius, and the smallest reported mass. Its mean density is 3.89 g/cm³, 0.706 times Earth's. TOI-270 c is a Super-Earth with a radius of 2.33 Earth radii, a mass of 6.2 Earth masses, and an orbital period of 5.66 days. Among the listed planets, it has the second-shortest year, the largest radius, and the largest reported mass. Its mean density is 2.7 g/cm³, 0.49 times Earth's.
TOI-270 d is a Super-Earth with a radius of 2 Earth radii, a mass of 4.2 Earth masses, and an orbital period of 11.4 days. Among the listed planets, it has the longest year, the second-smallest radius, and the second-smallest reported mass. Its mean density is 2.89 g/cm³, 0.525 times Earth's. Each planet's reported radius and mass are larger than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
9
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | 0.36 | 0.37 | — | — | M3 V | 22.48 | Weisserman et al. 2026 | TICv8 |
| — | — | 0.38 | — | — | M3 V | 22.48 | Mikal-Evans et al. 2023 | TICv8 |
| 3551 | — | 0.37 | — | — | — | 22.48 | ExoFOP | TICv8 |
| 3532 | 0.36 | 0.37 | — | -1.71 | — | 22.48 | TICv8 | TICv8 |
| 3886.2 | — | — | — | — | — | 22.48 | Gaia DR2 | TICv8 |
| 3506 | — | 0.38 | — | — | — | 22.48 | Coulombe et al. 2025 | TICv8 |
| 3506 | 0.39 | 0.38 | — | -1.71 | M | 22.48 | Van Eylen et al. 2021 | TICv8 |
| 3506 | 0.39 | 0.38 | — | — | — | 22.48 | Kaye et al. 2022 | TICv8 |
| 3386 | 0.40 | 0.38 | — | -1.77 | M3.0 V | 22.48 | Günther et al. 2019 | TICv8 |
| 3551 | — | 0.37 | — | — | — | 22.48 | ExoFOP | TICv8 |
| 3551 | — | 0.37 | — | — | — | 22.48 | ExoFOP | TICv8 |