PSO J030947.49+271757.31
| PSO J030947.49+271757.31 | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation | Aries |
| Right ascension | 03h 09m 47.49s |
| Declination | +27° 17′ 57.31″ |
| Redshift | 6.1 |
| Distance | 12.7 billion ly (4.0 billion pc) (light travel distance) 27.6 billion ly (8.5 billion pc) (proper distance) |
| Type | Blazar |
| Other designations | |
| PSO J0309+27 | |
| See also: Quasar, List of quasars | |
PSO J030947.49+271757.31, sometimes shortened to PSO J0309+27, is the most distant known blazar, as of 2020. It lies in Aries. The blazar has a redshift of 6.1, meaning its light took almost 13 billion years to reach Earth, when the universe was about 1 billion years old, and its present comoving distance is about 30 billion light-years. It was discovered by a team of researchers led by Silvia Belladitta, a Ph.D. student at the University of Insubria, working for the Italian National Institute for Astrophysics (INAF) in Milan, Italy.