20204+3840
- Unique Name: 20204+3840SEI1089AC
- RA: 20 20 19.18
- Dec: +38 39 56.4
- Discoverer: SEI
- Discoverer Number: 1089
- Components: AC
- First year: 1895
- Last year: 2013
- Observations: 9
- First position angle: 20
- Last position angle: 17
- First separation: 27.6
- Last separation: 28.2
- Mag first component: 10.64
- Mag second component: 10.56
- Spectral type:
- Primary proper motion RA: -8
- Primary proper motion DEC: 5
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -5
- Durchmusterung:
- Notes: