21376+5546
- Unique Name: 21376+5546BU 686AB
- RA: 21 37 34.70
- Dec: +55 45 48.7
- Discoverer: BU
- Discoverer Number: 686
- Components: AB
- First year: 1877
- Last year: 2008
- Observations: 16
- First position angle: 298
- Last position angle: 310
- First separation: 0.4
- Last separation: 1.0
- Mag first component: 9.39
- Mag second component: 11.22
- Spectral type: A
- Primary proper motion RA: -1
- Primary proper motion DEC: -19
- Secondary proper motion RA: -4
- Secondary proper motion DEC: -17
- Durchmusterung: +55 2610
- Notes: