20136+3640
- Unique Name: 20136+3640SEI1023
- RA: 20 13 34.39
- Dec: +36 40 29.3
- Discoverer: SEI
- Discoverer Number: 1023
- Components:
- First year: 1896
- Last year: 2004
- Observations: 12
- First position angle: 341
- Last position angle: 343
- First separation: 24.9
- Last separation: 28.6
- Mag first component: 9.18
- Mag second component: 10.53
- Spectral type: A7III
- Primary proper motion RA: -6
- Primary proper motion DEC: -33
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -3
- Durchmusterung: +36 3941
- Notes: