21166+4448
- Unique Name: 21166+4448ES 97
- RA: 21 16 32.74
- Dec: +44 48 36.6
- Discoverer: ES
- Discoverer Number: 97
- Components:
- First year: 1893
- Last year: 2008
- Observations: 9
- First position angle: 291
- Last position angle: 290
- First separation: 7.8
- Last separation: 7.5
- Mag first component: 9.98
- Mag second component: 10.9
- Spectral type:
- Primary proper motion RA: 13
- Primary proper motion DEC: 10
- Secondary proper motion RA: 9
- Secondary proper motion DEC: 11
- Durchmusterung: +44 3761
- Notes: