| WDS ID | 07346+3153 |
| Common catalogue ID | STF 1110 |
| Components | AB |
| Other Designation | 66 alf Gem (Castor), YY Gem (C) |
| Position angle | 55 |
| Separation | 5.2 |
| Mag First | 1.93 |
| Mag Second | 2.97 |
| Delta mag | 1.04 |
| Spectral Type | A1V+A4Vm |
| Constellation | Gemini |
| RA | 07:34:36.0 |
| Dec | +31:53:19.1 |