21309-4234
- Unique Name: 21309-4234DON1009
- RA: 21 30 53.54
- Dec: -42 33 11.0
- Discoverer: DON
- Discoverer Number: 1009
- Components:
- First year: 1931
- Last year: 1946
- Observations: 3
- First position angle: 241
- Last position angle: 244
- First separation: 0.5
- Last separation: 0.5
- Mag first component: 10.6
- Mag second component: 12.4
- Spectral type: F3V
- Primary proper motion RA: -5
- Primary proper motion DEC: -9
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -4314573
- Notes:
