21140+6606
- Unique Name: 21140+6606MLB 221
- RA: 21 13 59.85
- Dec: +66 05 43.1
- Discoverer: MLB
- Discoverer Number: 221
- Components:
- First year: 1892
- Last year: 2003
- Observations: 10
- First position angle: 177
- Last position angle: 176
- First separation: 3.0
- Last separation: 3.7
- Mag first component: 10.71
- Mag second component: 11.02
- Spectral type:
- Primary proper motion RA: -3
- Primary proper motion DEC: 22
- Secondary proper motion RA: 0
- Secondary proper motion DEC: -1
- Durchmusterung: +65 1563
- Notes: N
