17420+1557
- Unique Name: 17420+1557BU 1251AB
- RA: 17 41 58.64
- Dec: +15 57 07.8
- Discoverer: BU
- Discoverer Number: 1251
- Components: AB
- First year: 1891
- Last year: 2007
- Observations: 37
- First position angle: 79
- Last position angle: 111
- First separation: 1.4
- Last separation: 1.4
- Mag first component: 5.59
- Mag second component: 9.38
- Spectral type: F3IV
- Primary proper motion RA: 1
- Primary proper motion DEC: 114
- Secondary proper motion RA: -7
- Secondary proper motion DEC: 103
- Durchmusterung: +16 3256
- Notes: NOD
