21197+4228
- Unique Name: 21197+4228ABH 144AI
- RA: 21 19 41.17
- Dec: +42 28 37.2
- Discoverer: ABH
- Discoverer Number: 144
- Components: AI
- First year: 1987
- Last year: 2002
- Observations: 3
- First position angle: 117
- Last position angle: 117
- First separation: 69.9
- Last separation: 69.2
- Mag first component: 11.1
- Mag second component: 15.5
- Spectral type: A2Vb
- Primary proper motion RA: 2
- Primary proper motion DEC: 1
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: U
