| ALESS 073.1 | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Fornax |
| Right ascension | 03h 32m 29.9s |
| Declination | −27° 56′ 19.3″ |
| Redshift | 4.7555±0.0001 |
| Heliocentric radial velocity | 1,425,663 km/s (885,866 mi/s) |
| Galactocentric velocity | 1,425,561 km/s (885,803 mi/s) |
| Distance | ~12.5 billion ly (3.8 billion pc) (light travel distance) 25 billion ly (7.7 billion pc) (comoving distance) |
| Apparent magnitude (V) | 25.5 |
| Characteristics | |
| Type | S |
| Other designations | |
| GDS J033229.29−275619.5, HKS2013 ALESS 073.1, COMBO-17 16177, XLB2011 403 | |
ALESS 073.1 is an old spiral galaxy 12 billion light years away from Earth.[1] The discovery was published in February 2021 in the journal Science.[1] It has challenged the way astronomers understand galaxies and galaxy formation.