20405+4010
- Unique Name: 20405+4010SEI1214AB
- RA: 20 40 26.92
- Dec: +40 10 39.8
- Discoverer: SEI
- Discoverer Number: 1214
- Components: AB
- First year: 1892
- Last year: 2002
- Observations: 7
- First position angle: 80
- Last position angle: 79
- First separation: 19.3
- Last separation: 20.2
- Mag first component: 10.79
- Mag second component: 11.92
- Spectral type:
- Primary proper motion RA: -8
- Primary proper motion DEC: -19
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -13
- Durchmusterung:
- Notes: