17121+4540
- Unique Name: 17121+4540KUI 79AB
- RA: 17 12 07.62
- Dec: +45 40 11.4
- Discoverer: KUI
- Discoverer Number: 79
- Components: AB
- First year: 1934
- Last year: 2010
- Observations: 211
- First position angle: 229
- Last position angle: 240
- First separation: 1.1
- Last separation: 1.1
- Mag first component: 10.02
- Mag second component: 10.25
- Spectral type: K5
- Primary proper motion RA: 22
- Primary proper motion DEC: -162
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +45 2505
- Notes: NO P
