Temperature
3270 K
3090 to 3631.1
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Stellar HostProfile
GJ 1132
M4.5 V • 12.61 pc
Records
11
literature rows
Planets
2
system count
References
12
distinct source labels
TIC: TIC 101955023
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: Berta-Thompson et al. 2015 • System source: TICv8
Mass
0.18 Msun
0.18 to 0.20
Radius
0.21 Rsun
0.21 to 0.26
Age
5 Gyr
single adopted value
Luminosity
-2.36 log(Lsun)
-2.36 to -2.28
Distance
12.61 pc
single adopted value
Spectral Type
M4.5 V
Multiple classifications reported
Planets
2
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.21 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 1132
0.21 R☉
System Layout
Known planets
2 planets linked to this host
GJ 1132 and Its Two Known Planets
GJ 1132 is an M4.5 V star, a small, cool red dwarf, located 41.1 light-years away. Its reported mass is 0.181 solar masses and its reported radius is 0.207 solar radii, both smaller than the Sun's, and its reported temperature of 3270 K is cooler than the Sun's. Its age is reported as a lower limit of 5 billion years. Two planets are known to orbit this star.
GJ 1132 b is an Earth-like planet discovered by transit in 2015. Its mass is 1.84 Earth masses and its radius is 1.19 Earth radii, both larger than Earth's. Its mean density is 5.98 g/cm³, 1.09 times Earth's. It completes an orbit in 1.63 days, the shortest year among the listed planets.
GJ 1132 c was discovered by radial velocity in 2018. Its minimum mass is 2.91 Earth masses, larger than Earth's, and its orbital period is 8.93 days, the longest year among the listed planets.
Provenance
Underlying measurements and references
Evidence Summary
Rows
11
Stellar refs
11
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typedisputed
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| — | — | — | — | — | M3.5 | 12.61 | Hawley et al. 1996 | TICv8 |
| — | 0.18 | 0.26 | — | — | — | 12.61 | Southworth et al. 2017 | TICv8 |
| 3090 | 0.19 | 0.21 | — | — | — | 12.61 | Maxted et al. 2022 | TICv8 |
| 3270 | 0.18 | 0.21 | 5 | -2.36 | M4.5 V | 12.61 | Berta-Thompson et al. 2015 | TICv8 |
| — | — | — | — | — | — | 12.61 | Cloutier et al. 2017 | TICv8 |
| 3631.1 | — | — | — | — | — | 12.61 | Gaia DR2 | TICv8 |
| 3229 | 0.19 | 0.22 | — | -2.32 | — | 12.61 | Xue et al. 2024 | TICv8 |
| 3270 | 0.18 | 0.21 | — | -2.36 | — | 12.61 | Bonfils et al. 2018 | TICv8 |
| 3261 | 0.20 | 0.23 | — | -2.28 | — | 12.61 | TICv8 | TICv8 |
| — | 0.20 | 0.23 | — | — | M4.5 V | 12.61 | Weisserman et al. 2026 | TICv8 |
| 3202 | — | 0.23 | — | — | — | 12.61 | ExoFOP | TICv8 |