Temperature
3458 K
3325 to 3772
←Back to Stellar Hosts
Stellar HostProfile
GJ 1252
M3 • 20.37 pc
Records
7
literature rows
Planets
1
system count
References
8
distinct source labels
TIC: TIC 370133522
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: Shporer et al. 2020 • System source: TICv8
Mass
0.38 Msun
0.38 to 0.38
Radius
0.39 Rsun
0.39 to 0.39
Luminosity
-1.71 log(Lsun)
-1.71 to -1.67
Distance
20.37 pc
single adopted value
Spectral Type
M3
Multiple classifications reported
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 0.39 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
GJ 1252
0.39 R☉
System Layout
Known planets
1 planets linked to this host
GJ 1252 b
Transit
◌
Discovery
2020
Period
0.52 days
Radius
1.19 R⊕
Mass
1.32 M⊕
Eq. Temp
—
GJ 1252 b: A Close-In Earth-Sized Planet
GJ 1252 is an M3 star located 66.4 light-years from Earth. As an M-type star, it is a small, cool red dwarf. Its mass is 0.381 solar masses, its radius is 0.391 solar radii, and its temperature is 3460 K - all smaller or cooler than the Sun's corresponding values. One known planet orbits this star.
That planet, GJ 1252 b, is an Earth-like world discovered by the transit method in 2020. During a transit, the planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. GJ 1252 b has a radius of 1.19 Earth radii, larger than Earth's, and a mass of 1.32 Earth masses, also larger than Earth's. Its orbital period is just 0.518 days. The planet's mean density is 4.28 g/cm³, which is 0.777 times Earth's.
Provenance
Underlying measurements and references
Evidence Summary
Rows
7
Stellar refs
7
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 |
|---|---|---|---|---|---|---|---|---|
| 3458 | 0.38 | 0.39 | 3.90 | — | — | 20.37 | Crossfield et al. 2022 | TICv8 |
| 3536 | 0.38 | 0.39 | — | -1.67 | — | 20.37 | TICv8 | TICv8 |
| 3325 | — | 0.39 | — | — | — | 20.37 | ExoFOP | TICv8 |
| 3458 | 0.38 | 0.39 | — | -1.71 | M3 | 20.37 | Shporer et al. 2020 | TICv8 |
| — | — | — | — | — | M2.5 | 20.37 | Hawley et al. 1996 | TICv8 |
| 3772 | — | — | — | — | — | 20.37 | Gaia DR2 | TICv8 |
| — | 0.38 | 0.39 | — | — | M3 V | 20.37 | Weisserman et al. 2026 | TICv8 |