Temperature
4916 K
4806.7 to 4916
←Back to Stellar Hosts
Stellar HostProfile
TOI-209
Unclassified star • 113.4 pc
Records
3
literature rows
Planets
1
system count
References
4
distinct source labels
TIC: TIC 52204645
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
0.81 Msun
single adopted value
Radius
0.74 Rsun
single adopted value
Luminosity
-0.54 log(Lsun)
single adopted value
Distance
113.4 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.74 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-209
0.74 R☉
System Layout
Known planets
1 planets linked to this host
TOI-209 b
Transit
◌
Discovery
2026
Period
4.38 days
Radius
2.39 R⊕
Mass
—
Eq. Temp
—
TOI-209 b: A Super-Earth Orbiting a Cool Dwarf Star
TOI-209 is a star 370 light-years from Earth with one known planet. The star has a mass of 0.81 solar masses and a radius of 0.743 solar radii, both smaller than the Sun's corresponding values. Its temperature of 4920 K is cooler than the Sun's.
The planet TOI-209 b is a Super-Earth discovered by the transit method in 2026. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. TOI-209 b completes an orbit every 4.38 days and has a radius of 2.39 Earth radii, larger than Earth's. In size classification, a Super-Earth reaches 2.5 times Earth's radius.
Provenance
Underlying measurements and references
Evidence Summary
Rows
3
Stellar refs
3
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massstable
Radiusstable
Luminositystable
Surface Gravitydisputed