21180+0010
- Unique Name: 21180+0010BUP 228BC
- RA: 21 18 10.24
- Dec: +00 11 34.7
- Discoverer: BUP
- Discoverer Number: 228
- Components: BC
- First year: 1908
- Last year: 2000
- Observations: 4
- First position angle: 117
- Last position angle: 117
- First separation: 12.0
- Last separation: 12.2
- Mag first component: 9.53
- Mag second component: 11.2
- Spectral type: K0
- Primary proper motion RA: 1
- Primary proper motion DEC: -1
- Secondary proper motion RA: 14
- Secondary proper motion DEC: 0
- Durchmusterung: -00 4196
- Notes: U
