UNCOVER-z12
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| UNCOVER-z12 | |
|---|---|
 UNCOVER-z12, as seen in November of 2023 | |
| Observation data (J2000 epoch) | |
| Constellation | Sculptor |
| Right ascension | 00h 14m 03.25s |
| Declination | −30° 21′ 24.48″ |
| Redshift | 12.393 |
| Distance | 32.21 billion light years (estimated) |
| Characteristics | |
| Type | Lyman-break galaxy |
UNCOVER-z12 is a high-redshift Lyman-break galaxy discovered by the James Webb Space Telescope (JWST)[1] during NIRCam imaging for the JWST Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization (UNCOVER) project[2] in November 2023. UNCOVER-z12 is within the Abell 2744 supercluster in the constellation Sculptor.[3] It is the 9th-most distant spectroscopically confirmed galaxy ever discovered as of 2026, and is estimated to be 32.21 giga-lightyears from Earth.
UNCOVER-z12 is a Lyman-Break galaxy. Due to the recent discovery date, not much more is known about the galaxy itself.[3]
Discovery
UNCOVER-z12 was first observed when large amounts of gravitational lensing from Abell 2744 made the galaxy visible. Abell 2744 is around 3.5 billion light-years away from the Milky Way.[4]
The gravity of Abell 2744 warps the fabric of space-time sufficiently to magnify the light of more faraway galaxies. The James Webb Space Telescope used the gravitational lensing to discover UNCOVER-z12, and further studies of deep galaxies located within Abell 2744 are currently ongoing.[4]
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