21323+5245
- Unique Name: 21323+5245BU 370AB
- RA: 21 32 16.33
- Dec: +52 45 01.6
- Discoverer: BU
- Discoverer Number: 370
- Components: AB
- First year: 1875
- Last year: 2010
- Observations: 25
- First position angle: 340
- Last position angle: 325
- First separation: 4.0
- Last separation: 3.3
- Mag first component: 8.76
- Mag second component: 9.62
- Spectral type: A0
- Primary proper motion RA: 9
- Primary proper motion DEC: -28
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -17
- Durchmusterung: +52 2963
- Notes: