21128+0729
- Unique Name: 21128+0729UC 4405
- RA: 21 12 50.11
- Dec: +07 29 13.1
- Discoverer: UC
- Discoverer Number: 4405
- Components:
- First year: 2000
- Last year: 2000
- Observations: 2
- First position angle: 273
- Last position angle: 273
- First separation: 35.7
- Last separation: 35.8
- Mag first component: 16.46
- Mag second component: 16.04
- Spectral type:
- Primary proper motion RA: -34
- Primary proper motion DEC: 48
- Secondary proper motion RA: -30
- Secondary proper motion DEC: 73
- Durchmusterung:
- Notes: V
