21403+5338
- Unique Name: 21403+5338TDT3099
- RA: 21 40 20.44
- Dec: +53 37 34.1
- Discoverer: TDT
- Discoverer Number: 3099
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 259
- Last position angle: 259
- First separation: 2.1
- Last separation: 2.1
- Mag first component: 11.43
- Mag second component: 12.27
- Spectral type:
- Primary proper motion RA: -2
- Primary proper motion DEC: -4
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -4
- Durchmusterung:
- Notes: