20431+3645
- Unique Name: 20431+3645SEI1227
- RA: 20 43 02.60
- Dec: +36 44 27.4
- Discoverer: SEI
- Discoverer Number: 1227
- Components:
- First year: 1896
- Last year: 2010
- Observations: 10
- First position angle: 149
- Last position angle: 167
- First separation: 20.4
- Last separation: 14.9
- Mag first component: 10.92
- Mag second component: 10.48
- Spectral type:
- Primary proper motion RA: 56
- Primary proper motion DEC: -20
- Secondary proper motion RA: -6
- Secondary proper motion DEC: 1
- Durchmusterung: +36 4204
- Notes: NL
