21573+3732
- Unique Name: 21573+3732ES 2526AB
- RA: 21 57 18.11
- Dec: +37 31 08.3
- Discoverer: ES
- Discoverer Number: 2526
- Components: AB
- First year: 1931
- Last year: 2011
- Observations: 6
- First position angle: 87
- Last position angle: 269
- First separation: 16.7
- Last separation: 18.1
- Mag first component: 12.05
- Mag second component: 12.7
- Spectral type: F6V+F5V
- Primary proper motion RA: -8
- Primary proper motion DEC: -3
- Secondary proper motion RA: -7
- Secondary proper motion DEC: 6
- Durchmusterung:
- Notes: U
