21555+1053
- Unique Name: 21555+1053BU 75AB
- RA: 21 55 31.42
- Dec: +10 52 49.5
- Discoverer: BU
- Discoverer Number: 75
- Components: AB
- First year: 1872
- Last year: 2013
- Observations: 225
- First position angle: 30
- Last position angle: 24
- First separation: 1.3
- Last separation: 1.0
- Mag first component: 8.4
- Mag second component: 8.56
- Spectral type: G5
- Primary proper motion RA: -85
- Primary proper motion DEC: -120
- Secondary proper motion RA: -85
- Secondary proper motion DEC: -120
- Durchmusterung: +10 4659
- Notes: NO
