21197+4228
- Unique Name: 21197+4228ABH 144AD
- RA: 21 19 41.17
- Dec: +42 28 37.2
- Discoverer: ABH
- Discoverer Number: 144
- Components: AD
- First year: 1987
- Last year: 2002
- Observations: 3
- First position angle: 113
- Last position angle: 112
- First separation: 64.7
- Last separation: 64.4
- Mag first component: 11.14
- Mag second component: 11.49
- Spectral type: A2Vb
- Primary proper motion RA: 2
- Primary proper motion DEC: 1
- Secondary proper motion RA: -10
- Secondary proper motion DEC: -5
- Durchmusterung:
- Notes: U
