18217+4039
- Unique Name: 18217+4039UC 3559
- RA: 18 21 43.91
- Dec: +40 38 30.1
- Discoverer: UC
- Discoverer Number: 3559
- Components:
- First year: 1999
- Last year: 2003
- Observations: 3
- First position angle: 248
- Last position angle: 248
- First separation: 48.2
- Last separation: 48.2
- Mag first component: 10.8
- Mag second component: 15.65
- Spectral type:
- Primary proper motion RA: -30
- Primary proper motion DEC: -50
- Secondary proper motion RA: -29
- Secondary proper motion DEC: -49
- Durchmusterung:
- Notes: V
