21006+5432
- Unique Name: 21006+5432HJ 1606AB
- RA: 21 00 35.35
- Dec: +54 31 45.8
- Discoverer: HJ
- Discoverer Number: 1606
- Components: AB
- First year: 1828
- Last year: 2003
- Observations: 11
- First position angle: 185
- Last position angle: 185
- First separation: 12.0
- Last separation: 18.6
- Mag first component: 9.62
- Mag second component: 11.7
- Spectral type: K7
- Primary proper motion RA: 0
- Primary proper motion DEC: -6
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -10
- Durchmusterung: +53 2533
- Notes: N
