21434+2147
- Unique Name: 21434+2147COU 536
- RA: 21 43 25.08
- Dec: +21 46 34.9
- Discoverer: COU
- Discoverer Number: 536
- Components:
- First year: 1970
- Last year: 1994
- Observations: 3
- First position angle: 226
- Last position angle: 223
- First separation: 0.9
- Last separation: 0.7
- Mag first component: 11.48
- Mag second component: 11.85
- Spectral type: A5
- Primary proper motion RA: 14
- Primary proper motion DEC: -3
- Secondary proper motion RA: 14
- Secondary proper motion DEC: -3
- Durchmusterung: +21 4606
- Notes: