18421+3445
- Unique Name: 18421+3445BLL 34AC
- RA: 18 42 08.09
- Dec: +34 44 46.7
- Discoverer: BLL
- Discoverer Number: 34
- Components: AC
- First year: 1894
- Last year: 2013
- Observations: 9
- First position angle: 69
- Last position angle: 69
- First separation: 115.6
- Last separation: 114.0
- Mag first component: 6.45
- Mag second component: 11.79
- Spectral type: B5V
- Primary proper motion RA: 0
- Primary proper motion DEC: -4
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -2
- Durchmusterung:
- Notes: N
