20406+3603
- Unique Name: 20406+3603SEI1213
- RA: 20 40 37.13
- Dec: +36 02 49.4
- Discoverer: SEI
- Discoverer Number: 1213
- Components:
- First year: 1896
- Last year: 2002
- Observations: 7
- First position angle: 247
- Last position angle: 244
- First separation: 26.9
- Last separation: 29.0
- Mag first component: 11.73
- Mag second component: 12.29
- Spectral type:
- Primary proper motion RA: 1
- Primary proper motion DEC: -2
- Secondary proper motion RA: -12
- Secondary proper motion DEC: -26
- Durchmusterung:
- Notes: