UNCOVER-z12

UNCOVER-z12
UNCOVER-z12, as seen in November of 2023
Observation data (J2000 epoch)
ConstellationSculptor
Right ascension00h 14m 03.26s
Declination−30° 21′ 24.5″
Redshift12.393
Distance32.21 billion light years (estimated)
Characteristics
TypeLyman-break galaxy

UNCOVER-z12 is a high-redshift Lyman-break galaxy discovered by the James Webb Space Telescope (JWST) during NIRCam imaging for the JWST Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization (UNCOVER) project in November 2023. UNCOVER-z12 is within the Abell 2744 supercluster in the constellation Sculptor. It is the 8th-most distant spectroscopically confirmed galaxy ever discovered as of 2025, and is estimated to be 32.21 giga-lightyears from Earth.

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