QSO 1748+687 (MKN 507)
RA: 17 48 38.46 DEC: +68 42 16.0 (J2000)
z=0.055900
The magnitudes without errors (errors are denoted by parentheses) are taken from the USNO-A2.0 survey plates.
| ID | USNO-A2 # |  (deg) |  (deg) | U Mag | B Mag | V Mag | R Mag | I Mag | J Mag | H Mag | K Mag | NOTES |
| obj | 1575-03860724 | 276.159873 | 68.704420 | 14.5 | 13.3 |