21151+4227
- Unique Name: 21151+4227COU2228
- RA: 21 15 08.30
- Dec: +42 27 03.2
- Discoverer: COU
- Discoverer Number: 2228
- Components:
- First year: 1984
- Last year: 1984
- Observations: 1
- First position angle: 29
- Last position angle: 29
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 11.0
- Mag second component: 12.6
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -4
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +41 4054
- Notes: