20478+2519
- Unique Name: 20478+2519BUP 218AB
- RA: 20 47 50.27
- Dec: +25 18 47.7
- Discoverer: BUP
- Discoverer Number: 218
- Components: AB
- First year: 1904
- Last year: 2009
- Observations: 6
- First position angle: 40
- Last position angle: 37
- First separation: 47.6
- Last separation: 49.5
- Mag first component: 11.27
- Mag second component: 11.29
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: -32
- Secondary proper motion RA: -7
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: