21433+5100
- Unique Name: 21433+5100BU 374
- RA: 21 43 15.44
- Dec: +51 00 11.6
- Discoverer: BU
- Discoverer Number: 374
- Components:
- First year: 1875
- Last year: 2009
- Observations: 11
- First position angle: 160
- Last position angle: 139
- First separation: 1.2
- Last separation: 1.8
- Mag first component: 8.56
- Mag second component: 10.06
- Spectral type: G5 A2
- Primary proper motion RA: -8
- Primary proper motion DEC: -9
- Secondary proper motion RA: -8
- Secondary proper motion DEC: -9
- Durchmusterung: +50 3416
- Notes: