12519+3447
- Unique Name: 12519+3447HJ 523
- RA: 12 51 52.96
- Dec: +34 46 34.7
- Discoverer: HJ
- Discoverer Number: 523
- Components:
- First year: 1827
- Last year: 2010
- Observations: 14
- First position angle: 180
- Last position angle: 183
- First separation: 10.0
- Last separation: 14.3
- Mag first component: 10.38
- Mag second component: 10.74
- Spectral type: G0+G0
- Primary proper motion RA: -15
- Primary proper motion DEC: -52
- Secondary proper motion RA: -15
- Secondary proper motion DEC: -52
- Durchmusterung: +35 2384
- Notes: NV
