Quasar
The closest known quasar to Earth, harboring a binary supermassive black hole at its core.
| Type | Quasar |
|---|---|
| Distance from Earth | 581,000,000 ly |
| Mass | 9.15 × 10^37 kg |
| Apparent magnitude | 13.8 |
| Redshift | 0.042 |
| Hemisphere | Northern |
| Discovered | 1969 |
Its mass is 46,003,017 times the mass of the Sun.
The light reaching us from Markarian 231 tonight left it around 581,000,000 years ago.
Of the 9 quasars these pages cover, only 0 lie closer to us.
Its light arrives redshifted by z = 0.042, stretched on the way here by the universe's expansion.
It has been on record since 1969.
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