19401+3509
- Unique Name: 19401+3509SEI 656
- RA: 19 40 06.89
- Dec: +35 08 52.1
- Discoverer: SEI
- Discoverer Number: 656
- Components:
- First year: 1894
- Last year: 2002
- Observations: 10
- First position angle: 284
- Last position angle: 290
- First separation: 10.7
- Last separation: 11.5
- Mag first component: 8.14
- Mag second component: 11.4
- Spectral type: A0
- Primary proper motion RA: 2
- Primary proper motion DEC: -2
- Secondary proper motion RA: -3
- Secondary proper motion DEC: 0
- Durchmusterung: +34 3653
- Notes: