Temperature
3216 K
3042 to 3464.9
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Stellar HostProfile
TOI-540
M V • 14.00 pc
Records
4
literature rows
Planets
1
system count
References
5
distinct source labels
TIC: TIC 200322593
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: Ment et al. 2021 • System source: TICv8
Mass
0.16 Msun
0.16 to 0.17
Radius
0.19 Rsun
0.19 to 0.20
Age
1.10 Gyr
single adopted value
Luminosity
-2.46 log(Lsun)
-2.47 to -2.46
Distance
14.00 pc
single adopted value
Spectral Type
M V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.19 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-540
0.19 R☉
System Layout
Known planets
1 planets linked to this host
TOI-540 b
Transit
◌
Discovery
2020
Period
1.24 days
Radius
0.90 R⊕
Mass
—
Eq. Temp
611 K
TOI-540 and Its Lone Planet
TOI-540 is a small, cool red dwarf of spectral type M V, located 45.7 light-years from us. Its mass is 0.159 solar masses, its radius 0.19 solar radii, and its temperature 3220 K, making it less massive, smaller, and cooler than the Sun. The star has an age of 1.1 billion years, and it hosts exactly one known planet.
That planet, TOI-540 b, is a Sub-Earth, a size class for worlds smaller than Earth in radius. It was found in 2020 by the transit method, in which a planet passing in front of its star dims the starlight slightly; repeated dips reveal the orbital period. TOI-540 b circles its host every 1.24 days and has a radius of 0.903 Earth radii, smaller than Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Spectral Typestable