18421+3445
- Unique Name: 18421+3445BLL 34BC
- RA: 18 42 10.08
- Dec: +34 44 50.0
- Discoverer: BLL
- Discoverer Number: 34
- Components: BC
- First year: 1879
- Last year: 2013
- Observations: 11
- First position angle: 65
- Last position angle: 65
- First separation: 90.9
- Last separation: 90.1
- Mag first component: 7.73
- Mag second component: 11.79
- Spectral type:
- Primary proper motion RA: 1
- Primary proper motion DEC: -3
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -2
- Durchmusterung:
- Notes: N
