21059+2118
- Unique Name: 21059+2118A 178
- RA: 21 05 55.26
- Dec: +21 18 13.2
- Discoverer: A
- Discoverer Number: 178
- Components:
- First year: 1900
- Last year: 2007
- Observations: 30
- First position angle: 70
- Last position angle: 65
- First separation: 0.9
- Last separation: 1.0
- Mag first component: 8.88
- Mag second component: 10.36
- Spectral type: A0
- Primary proper motion RA: 9
- Primary proper motion DEC: -8
- Secondary proper motion RA: 9
- Secondary proper motion DEC: -8
- Durchmusterung: +20 4828
- Notes: