12566+2101
- Unique Name: 12566+2101HO 538AB
- RA: 12 56 33.24
- Dec: +21 00 44.8
- Discoverer: HO
- Discoverer Number: 538
- Components: AB
- First year: 1894
- Last year: 1991
- Observations: 12
- First position angle: 118
- Last position angle: 101
- First separation: 2.1
- Last separation: 2.1
- Mag first component: 9.47
- Mag second component: 12.67
- Spectral type: G0
- Primary proper motion RA: 40
- Primary proper motion DEC: -169
- Secondary proper motion RA: 42
- Secondary proper motion DEC: -171
- Durchmusterung: +21 2470
- Notes:
