| Field | Units | Value |
|---|---|---|
| 3CRR name | 3C266 | |
| IAU name | 1143+500 | |
| Redshift | 1.272 (r) | |
| 178-MHz flux | (Jy) | 12.1 |
| Sp. index | 1.01 | |
| FR class | II (r) | |
| 5-GHz core flux | (mJy) | <0.17 (r) |
| Old radio position | (reference) | (r) |
| `Best' radio map | (reference) | (r) |
| RA | (B1950) | 11 43 04.270 |
| DEC | (B1950) | +50 02 47.00 |
| Optical position | (reference) | (r) |
| Type | 1 | |
| LAS | (arcsec) | 5.5 |
| Size | (kpc) | 46 |
| Scale | (kpc/arcsec) | 8.357 |
| Luminosity distance | (Mpc) | 8899 |
| 178-MHz luminosity | (W/Hz/sr) | 920 x 1025 |
| B magnitude | (mag) | -- |
| V magnitude | (mag) | -- |
| R magnitude | (mag) | 22.5 (r) (n) |
| r magnitude | (mag) | -- |
| Radio RA | (J2000) | 11 45 43.368 |
| Radio DEC | (J2000) | +49 46 07.70 |
| New IAU name | J1145+497 |