20310+3656
- Unique Name: 20310+3656AC 18AB
- RA: 20 30 59.23
- Dec: +36 56 09.1
- Discoverer: AC
- Discoverer Number: 18
- Components: AB
- First year: 1859
- Last year: 1991
- Observations: 18
- First position angle: 155
- Last position angle: 158
- First separation: 2.5
- Last separation: 2.2
- Mag first component: 6.32
- Mag second component: 10.12
- Spectral type: F5Iab
- Primary proper motion RA: -1
- Primary proper motion DEC: -2
- Secondary proper motion RA: 0
- Secondary proper motion DEC: -4
- Durchmusterung: +36 4105
- Notes: N
