21345+4725
- Unique Name: 21345+4725ES 1172AC
- RA: 21 34 25.29
- Dec: +47 25 12.7
- Discoverer: ES
- Discoverer Number: 1172
- Components: AC
- First year: 1900
- Last year: 2012
- Observations: 9
- First position angle: 209
- Last position angle: 205
- First separation: 16.7
- Last separation: 16.3
- Mag first component: 9.94
- Mag second component: 10.7
- Spectral type: B8III
- Primary proper motion RA: -1
- Primary proper motion DEC: 1
- Secondary proper motion RA: 8
- Secondary proper motion DEC: -2
- Durchmusterung:
- Notes: U
