21403+3843
- Unique Name: 21403+3843ALI 979
- RA: 21 40 18.20
- Dec: +38 43 35.7
- Discoverer: ALI
- Discoverer Number: 979
- Components:
- First year: 1929
- Last year: 2002
- Observations: 3
- First position angle: 11
- Last position angle: 6
- First separation: 9.7
- Last separation: 9.8
- Mag first component: 10.32
- Mag second component: 13.2
- Spectral type:
- Primary proper motion RA: 5
- Primary proper motion DEC: -10
- Secondary proper motion RA: 3
- Secondary proper motion DEC: -15
- Durchmusterung:
- Notes: