Temperature
3550 K
3455 to 3550
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Stellar HostProfile
TOI-1634
M2 • 35.27 pc
Records
4
literature rows
Planets
2
system count
References
5
distinct source labels
TIC: TIC 201186294
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: Cloutier et al. 2021 • System source: TICv8
Mass
0.50 Msun
0.45 to 0.50
Radius
0.45 Rsun
0.45 to 0.47
Luminosity
-1.54 log(Lsun)
-1.58 to -1.54
Distance
35.27 pc
single adopted value
Spectral Type
M2
Consistent across records
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.45 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
TOI-1634
0.45 R☉
System Layout
Known planets
2 planets linked to this host
TOI-1634 b
Transit
◌
Discovery
2021
Period
0.99 days
Radius
1.76 R⊕
Mass
4.90 M⊕
Eq. Temp
900 K
TOI-1634 c
Radial Velocity
◌
Discovery
2022
Period
103 days
Radius
—
Mass
—
Eq. Temp
—
TOI-1634 and Its Two Known Planets
TOI-1634 is an M2 star located 115 light-years away, with a mass of 0.502 solar masses, a radius of 0.45 solar radii, and a temperature of 3550 K. The star's reported mass and radius estimates are smaller than the Sun's, and its reported temperature is cooler than the Sun's. Two planets are known to orbit this host.
TOI-1634 b is a Super-Earth discovered by the transit method in 2021. Its radius of 1.76 Earth radii is larger than Earth's, and its mass of 4.9 Earth masses is also larger than Earth's. Its mean density is 4.96 g/cm³, 0.9 times Earth's. Among the listed planets, TOI-1634 b has the shortest year by reported estimates, just 0.989 days. TOI-1634 c was discovered by the radial velocity method in 2022, which measures the wobble a planet's gravity induces in its star's motion. It has an orbital period of 103 days, the longest year among the listed planets by reported estimates.
Provenance
Underlying measurements and references
Evidence Summary
Rows
4
Stellar refs
4
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3472 | 0.45 | 0.45 | — | -1.58 | — | 35.27 | Hirano et al. 2021 | TICv8 |
| 3550 | 0.50 | 0.45 | — | -1.54 | M2 | 35.27 | Cloutier et al. 2021 | TICv8 |
| 3455 | 0.46 | 0.47 | — | -1.56 | — | 35.27 | TICv8 | TICv8 |
| 3455 | — | 0.47 | — | — | — | 35.27 | ExoFOP | TICv8 |