Quasar
An extremely luminous, gravitationally lensed quasar surrounded by a massive reservoir of water vapor.
| Type | Quasar |
|---|---|
| Distance from Earth | 12,000,000,000 ly |
| Mass | 1.99 × 10^40 kg |
| Apparent magnitude | 15.2 |
| Redshift | 3.91 |
| Hemisphere | Northern |
| Discovered | 1998 |
Its mass is 10,000,000,000 times the mass of the Sun.
The light reaching us from APM 08279+5255 tonight left it around 12,000,000,000 years ago.
Its light arrives redshifted by z = 3.91, stretched on the way here by the universe's expansion.
It has been on record since 1998.
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