12209-2152
- Unique Name: 12209-2152DON 523
- RA: 12 20 55.83
- Dec: -21 52 20.9
- Discoverer: DON
- Discoverer Number: 523
- Components:
- First year: 1930
- Last year: 1940
- Observations: 2
- First position angle: 106
- Last position angle: 109
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 10.3
- Mag second component: 12.3
- Spectral type: G8III/IV
- Primary proper motion RA: -4
- Primary proper motion DEC: 0
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -21 3519
- Notes: