20490+2637
- Unique Name: 20490+2637COU 828AC
- RA: 20 48 57.52
- Dec: +26 37 17.6
- Discoverer: COU
- Discoverer Number: 828
- Components: AC
- First year: 1972
- Last year: 2009
- Observations: 4
- First position angle: 90
- Last position angle: 96
- First separation: 15.0
- Last separation: 25.6
- Mag first component: 10.66
- Mag second component: 14.1
- Spectral type: F8
- Primary proper motion RA: 17
- Primary proper motion DEC: 0
- Secondary proper motion RA: 17
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: