| Field | Units | Value |
|---|---|---|
| 3CRR name | 3C263 | |
| IAU name | 1137+660 | |
| Redshift | 0.652 (r) | |
| 178-MHz flux | (Jy) | 16.6 |
| Sp. index | 0.82 | |
| FR class | II (r) | |
| 5-GHz core flux | (mJy) | 157 (r) |
| Old radio position | (reference) | (r) |
| `Best' radio map | (reference) | (r) |
| RA | (B1950) | 11 37 09.300 |
| DEC | (B1950) | +66 04 27.04 |
| Optical position | (reference) | (r) |
| Type | 3 | |
| LAS | (arcsec) | 51 |
| Size | (kpc) | 350 |
| Scale | (kpc/arcsec) | 6.94 |
| Luminosity distance | (Mpc) | 3910 |
| 178-MHz luminosity | (W/Hz/sr) | 220 x 1025 |
| B magnitude | (mag) | 16.50 (r) |
| V magnitude | (mag) | 16.32 (r) |
| R magnitude | (mag) | -- |
| r magnitude | (mag) | -- |
| Radio RA | (J2000) | 11 39 57.018 |
| Radio DEC | (J2000) | +65 47 49.34 |
| New IAU name | J1139+657 |