21406+5419
- Unique Name: 21406+5419ES 35AC
- RA: 21 40 39.10
- Dec: +54 19 29.0
- Discoverer: ES
- Discoverer Number: 35
- Components: AC
- First year: 1898
- Last year: 2009
- Observations: 16
- First position angle: 29
- Last position angle: 29
- First separation: 19.1
- Last separation: 18.3
- Mag first component: 8.19
- Mag second component: 10.79
- Spectral type: M8e
- Primary proper motion RA: -10
- Primary proper motion DEC: -12
- Secondary proper motion RA: -10
- Secondary proper motion DEC: -12
- Durchmusterung:
- Notes: NL
