16509+3556
- Unique Name: 16509+3556SKF1351AC
- RA: 16 50 56.82
- Dec: +35 55 57.9
- Discoverer: SKF
- Discoverer Number: 1351
- Components: AC
- First year: 1954
- Last year: 2012
- Observations: 9
- First position angle: 108
- Last position angle: 108
- First separation: 167.7
- Last separation: 167.7
- Mag first component: 11.36
- Mag second component: 15.0
- Spectral type: M0V+M4.5V
- Primary proper motion RA: -81
- Primary proper motion DEC: 174
- Secondary proper motion RA: -73
- Secondary proper motion DEC: 175
- Durchmusterung:
- Notes: V