21556+2356
- Unique Name: 21556+2356POU5571
- RA: 21 55 36.08
- Dec: +23 55 58.0
- Discoverer: POU
- Discoverer Number: 5571
- Components:
- First year: 1897
- Last year: 2001
- Observations: 3
- First position angle: 320
- Last position angle: 315
- First separation: 16.2
- Last separation: 17.2
- Mag first component: 11.9
- Mag second component: 13.1
- Spectral type:
- Primary proper motion RA: 5
- Primary proper motion DEC: -7
- Secondary proper motion RA: -14
- Secondary proper motion DEC: 8
- Durchmusterung:
- Notes: