21171+2534
- Unique Name: 21171+2534A 294AB
- RA: 21 17 05.15
- Dec: +25 34 24.2
- Discoverer: A
- Discoverer Number: 294
- Components: AB
- First year: 1897
- Last year: 2001
- Observations: 7
- First position angle: 223
- Last position angle: 218
- First separation: 3.7
- Last separation: 4.5
- Mag first component: 9.82
- Mag second component: 13.3
- Spectral type: G0
- Primary proper motion RA: 22
- Primary proper motion DEC: -22
- Secondary proper motion RA: 18
- Secondary proper motion DEC: -30
- Durchmusterung: +24 4361
- Notes: