21252+1828
- Unique Name: 21252+1828COU 430AB
- RA: 21 25 09.48
- Dec: +18 27 45.4
- Discoverer: COU
- Discoverer Number: 430
- Components: AB
- First year: 1969
- Last year: 2007
- Observations: 19
- First position angle: 239
- Last position angle: 234
- First separation: 0.5
- Last separation: 0.6
- Mag first component: 7.95
- Mag second component: 9.41
- Spectral type: A0
- Primary proper motion RA: 9
- Primary proper motion DEC: -5
- Secondary proper motion RA: 9
- Secondary proper motion DEC: -5
- Durchmusterung: +17 4577
- Notes: