21571+4540
- Unique Name: 21571+4540COU2235
- RA: 21 57 01.07
- Dec: +45 39 48.6
- Discoverer: COU
- Discoverer Number: 2235
- Components:
- First year: 1984
- Last year: 2008
- Observations: 3
- First position angle: 81
- Last position angle: 85
- First separation: 0.3
- Last separation: 0.3
- Mag first component: 10.72
- Mag second component: 10.89
- Spectral type:
- Primary proper motion RA: -11
- Primary proper motion DEC: -5
- Secondary proper motion RA: -11
- Secondary proper motion DEC: -5
- Durchmusterung: +44 3995
- Notes: