Temperature
3515 K
3489 to 3515
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Stellar HostProfile
TOI-1243
M2.0 V • 43.19 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 219698776
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: Poultourtzidis et al. 2026 • System source: TICv8
Mass
0.52 Msun
0.49 to 0.52
Radius
0.51 Rsun
0.49 to 0.51
Luminosity
-1.45 log(Lsun)
-1.49 to -1.45
Distance
43.19 pc
single adopted value
Spectral Type
M2.0 V
Consistent across records
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.51 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-1243
0.51 R☉
System Layout
Known planets
1 planets linked to this host
TOI-1243 b
Transit
◌
Discovery
2026
Period
4.66 days
Radius
2.33 R⊕
Mass
7.70 M⊕
Eq. Temp
450 K
TOI-1243 b: A Super-Earth
TOI-1243 is an M2.0 V star, a small, cool red dwarf, located 141 light-years away. Its mass is 0.515 solar masses and its radius is 0.511 solar radii. The star's reported mass and radius estimates are smaller than the Sun's, and its temperature of 3520 K is cooler than the Sun's. One planet orbits this host.
That planet is TOI-1243 b, a Super-Earth discovered by transit in 2026. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. The planet's radius is 2.33 Earth radii, larger than Earth's, and its mass is 7.7 Earth masses, also larger than Earth's. Its orbital period is 4.66 days. The planet's mean density is 3.35 g/cm³, 0.609 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitystable
Spectral Typestable