SDSS J114816.64+525150.3
Quasar in the constellation Ursa Major
From Wikipedia, the free encyclopedia
SDSS J114816.64+525150.3 (J1148+5251) was the most distant known quasar when it was discovered in 2003, at redshift Z=6.419.[2] The quasar is powered by a 3 billion solar mass supermassive black hole.[3]
| SDSS J114816.64+525150.3 | |
|---|---|
SDSS J114816.64+525150.3 captured by Two Micron All Sky Survey | |
| Observation data (Epoch ) | |
| Constellation | Ursa Major |
| Right ascension | 11h 48m 16.64s |
| Declination | 52° 51′ 50.3″ |
| Redshift | 6.419 |
| Apparent magnitude (V) | 25.53[1] |
| See also: Quasar, List of quasars | |
Imaging with amateur-grade telescope
The Virtual Telescope Project imaged the quasar between March and April 2024, with a 350-millimeter (14 in) Celestron Schmidt–Cassegrain telescope, on a Software Bisque Paramount ME robotic mount. A total of 81, 300-second exposures were combined, for a total of almost 7 hours of exposure, recording sources as faint as about magnitude R=25. The team termed it "the most distant quasar observable at visible wavelengths".[4]
