17420+1557
- Unique Name: 17420+1557BU 1251AC
- RA: 17 41 58.64
- Dec: +15 57 07.8
- Discoverer: BU
- Discoverer Number: 1251
- Components: AC
- First year: 1910
- Last year: 2001
- Observations: 5
- First position angle: 276
- Last position angle: 271
- First separation: 155.1
- Last separation: 154.7
- Mag first component: 5.59
- Mag second component: 12.4
- Spectral type: F3IV
- Primary proper motion RA: -7
- Primary proper motion DEC: 103
- Secondary proper motion RA: 3
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: N
