21235+1728
- Unique Name: 21235+1728COU 428
- RA: 21 23 30.77
- Dec: +17 28 22.8
- Discoverer: COU
- Discoverer Number: 428
- Components:
- First year: 1969
- Last year: 2006
- Observations: 7
- First position angle: 138
- Last position angle: 134
- First separation: 0.7
- Last separation: 0.9
- Mag first component: 10.4
- Mag second component: 11.4
- Spectral type: F8
- Primary proper motion RA: 73
- Primary proper motion DEC: 36
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +16 4522
- Notes: