20159+4257
- Unique Name: 20159+4257ROE 42
- RA: 20 15 54.16
- Dec: +42 56 34.4
- Discoverer: ROE
- Discoverer Number: 42
- Components:
- First year: 1892
- Last year: 2006
- Observations: 9
- First position angle: 94
- Last position angle: 92
- First separation: 6.0
- Last separation: 6.0
- Mag first component: 10.68
- Mag second component: 11.06
- Spectral type:
- Primary proper motion RA: 4
- Primary proper motion DEC: -8
- Secondary proper motion RA: 5
- Secondary proper motion DEC: -8
- Durchmusterung: +42 3657
- Notes: