21573+3732
- Unique Name: 21573+3732ES 2526BC
- RA: 21 57 16.62
- Dec: +37 31 05.8
- Discoverer: ES
- Discoverer Number: 2526
- Components: BC
- First year: 1931
- Last year: 2011
- Observations: 6
- First position angle: 258
- Last position angle: 180
- First separation: 5.0
- Last separation: 5.7
- Mag first component: 12.7
- Mag second component: 12.6
- Spectral type:
- Primary proper motion RA: -7
- Primary proper motion DEC: 6
- Secondary proper motion RA: -10
- Secondary proper motion DEC: -14
- Durchmusterung:
- Notes: U
