3C 9
Quasar in the constellation of Pisces
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3C 9 is a lobe-dominated quasar[1][3] located in the constellation Pisces. This quasar is classified as radio loud with a jet.[4][5] It has X-ray emission located primary on two sides of its nucleus, based on Chandra observations.[4]
Right ascension00h 20m 25.22s
Declination+15° 40′ 54.7″
| 3C 9 | |
|---|---|
| Observation data (Epoch J2000) | |
| Constellation | Pisces |
| Right ascension | 00h 20m 25.22s |
| Declination | +15° 40′ 54.7″ |
| Redshift | 2.0194[1] 240,526 km/s[1] |
| Distance | 10 billion light-years (light travel time)[2] ~17 billion light-years (present comoving distance)[2] |
| Type | FR II RG[2] QSO[1][2] |
| Apparent magnitude (V) | 17.62[1] |
| Other designations | |
| 2C 26, LEDA 2817473[1] | |
| See also: Quasar, List of quasars | |
The host of 3C 9 is described as a ring-like galaxy undergoing a merger. The two nuclei of the merging galaxies are estimated to be 9 kiloparsecs apart.[6]
In 1965, it was the most distant object discovered at the time of discovery. This was the first object found with a redshift in excess of 2.[7]