Temperature
3680 K
single adopted value
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Stellar HostProfile
AT2021ueyL
M V • 1040 pc
Records
1
literature rows
Planets
1
system count
References
2
distinct source labels
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: Ban et al. 2025 • System source: Ban et al. 2025
Mass
0.49 Msun
single adopted value
Distance
1040 pc
single adopted value
Spectral Type
M V
Consistent across records
Planets
1
Stable across source rows
System Layout
Known planets
1 planets linked to this host
AT2021ueyL b
Microlensing
◌
Discovery
2025
Period
4168.7 days
Radius
—
Mass
425.9 M⊕
Eq. Temp
—
AT2021ueyL b: A Microlensing Planet Around a Cool Red Dwarf
AT2021ueyL is a single-star system 3390 light-years away. Its host is an M V star, the cool kind of main-sequence dwarf, with a reported temperature of 3680 K and a reported mass of 0.49 solar masses. Both estimates sit below the Sun's comparable values.
One planet orbits this host: AT2021ueyL b, discovered by microlensing in 2025. Its reported mass estimate is 426 Earth masses, larger than Earth's. The planet's orbital period is 4170 days, the time it takes to complete one orbit.
Provenance
Underlying measurements and references
Evidence Summary
Rows
1
Stellar refs
1
System refs
1
Distancestable
Temperaturestable
Massstable
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 3680 | 0.49 | — | — | — | M V | 1040 | Ban et al. 2025 | Ban et al. 2025 |