21109+1615
- Unique Name: 21109+1615SMA 133
- RA: 21 10 51.67
- Dec: +16 15 12.7
- Discoverer: SMA
- Discoverer Number: 133
- Components:
- First year: 1921
- Last year: 2013
- Observations: 5
- First position angle: 333
- Last position angle: 334
- First separation: 11.3
- Last separation: 11.7
- Mag first component: 9.46
- Mag second component: 11.8
- Spectral type: A0
- Primary proper motion RA: 6
- Primary proper motion DEC: -3
- Secondary proper motion RA: -15
- Secondary proper motion DEC: 17
- Durchmusterung: +15 4361
- Notes: