21558+5052
- Unique Name: 21558+5052COU2656
- RA: 21 55 48.33
- Dec: +50 52 26.6
- Discoverer: COU
- Discoverer Number: 2656
- Components:
- First year: 1989
- Last year: 1996
- Observations: 3
- First position angle: 67
- Last position angle: 70
- First separation: 1.1
- Last separation: 1.0
- Mag first component: 10.89
- Mag second component: 11.03
- Spectral type:
- Primary proper motion RA: -5
- Primary proper motion DEC: -8
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -8
- Durchmusterung: +50 3489
- Notes: