Temperature
3225 K
3225 to 3231
M4.5+/-0.5 • 37.22 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
Approximate color
from effective temperature
Canonical Summary
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Ghachoui et al. 2023 • System source: TICv8
Temperature
3225 K
3225 to 3231
Mass
0.18 Msun
0.18 to 0.18
Radius
0.21 Rsun
0.21 to 0.21
Luminosity
-2.36 log(Lsun)
-2.36 to -2.35
Distance
37.22 pc
single adopted value
Spectral Type
M4.5+/-0.5
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Current adopted radius: 0.21 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-1680
0.21 R☉
System Layout
1 planets linked to this host
Transit
Discovery
2023
Period
4.80 days
Radius
1.47 R⊕
Mass
—
Eq. Temp
404 K
TOI-1680 is an M-type red dwarf 121 light-years away. Its spectral type is given as M4.5+/-0.5, its mass is 0.18 solar masses, its radius is 0.211 solar radii, and its temperature is 3230 K. Its reported mass estimates it below the Sun, its reported radius likewise falls below the Sun's, and its temperature is cooler than the Sun's. One planet orbits this star, TOI-1680 b.
TOI-1680 b was found by transit and announced in 2023. It completes an orbit in 4.8 days, and its radius is 1.47 Earth radii, which is larger than Earth's. That radius keeps it within 1.5 times Earth's radius, the range for an Earth-like size class. The transit method detects the small dip in brightness when the planet passes in front of its star, and repeated dips establish the orbital period.
Provenance
Evidence Summary
Rows
3
Stellar refs
3
System refs
1