21189+4351
- Unique Name: 21189+4351COU2438
- RA: 21 18 52.31
- Dec: +43 49 41.5
- Discoverer: COU
- Discoverer Number: 2438
- Components:
- First year: 1986
- Last year: 2009
- Observations: 4
- First position angle: 256
- Last position angle: 254
- First separation: 1.3
- Last separation: 1.4
- Mag first component: 10.3
- Mag second component: 11.0
- Spectral type:
- Primary proper motion RA: 16
- Primary proper motion DEC: -5
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +43 3881
- Notes: