16566+5711
- Unique Name: 16566+5711A 1143AB
- RA: 16 56 34.99
- Dec: +57 11 17.2
- Discoverer: A
- Discoverer Number: 1143
- Components: AB
- First year: 1905
- Last year: 2008
- Observations: 40
- First position angle: 252
- Last position angle: 234
- First separation: 0.4
- Last separation: 0.4
- Mag first component: 9.44
- Mag second component: 9.72
- Spectral type: G0
- Primary proper motion RA: 27
- Primary proper motion DEC: -14
- Secondary proper motion RA: 27
- Secondary proper motion DEC: -14
- Durchmusterung: +57 1716
- Notes: NO