21328+4437
- Unique Name: 21328+4437ES 1339AB
- RA: 21 32 48.41
- Dec: +44 38 00.7
- Discoverer: ES
- Discoverer Number: 1339
- Components: AB
- First year: 1914
- Last year: 2002
- Observations: 3
- First position angle: 133
- Last position angle: 135
- First separation: 4.8
- Last separation: 5.1
- Mag first component: 11.08
- Mag second component: 15.1
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -9
- Secondary proper motion RA: -4
- Secondary proper motion DEC: 20
- Durchmusterung: +43 3963
- Notes: