21428-4247
- Unique Name: 21428-4247DON1015
- RA: 21 42 50.60
- Dec: -42 46 47.9
- Discoverer: DON
- Discoverer Number: 1015
- Components:
- First year: 1931
- Last year: 1946
- Observations: 3
- First position angle: 339
- Last position angle: 340
- First separation: 1.6
- Last separation: 1.6
- Mag first component: 10.1
- Mag second component: 14.5
- Spectral type: G8III
- Primary proper motion RA: 1
- Primary proper motion DEC: -2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: -4314667
- Notes: