21596+5223
- Unique Name: 21596+5223HU 775AB
- RA: 21 59 35.80
- Dec: +52 23 08.2
- Discoverer: HU
- Discoverer Number: 775
- Components: AB
- First year: 1904
- Last year: 1997
- Observations: 6
- First position angle: 221
- Last position angle: 218
- First separation: 2.2
- Last separation: 1.9
- Mag first component: 9.65
- Mag second component: 11.58
- Spectral type: B5
- Primary proper motion RA: 2
- Primary proper motion DEC: 6
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +51 3213
- Notes: