21140+3809
- Unique Name: 21140+3809SEI1456
- RA: 21 13 55.21
- Dec: +38 08 37.0
- Discoverer: SEI
- Discoverer Number: 1456
- Components:
- First year: 1895
- Last year: 2002
- Observations: 6
- First position angle: 356
- Last position angle: 357
- First separation: 21.2
- Last separation: 20.9
- Mag first component: 12.08
- Mag second component: 12.18
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -6
- Secondary proper motion RA: -1
- Secondary proper motion DEC: 0
- Durchmusterung:
- Notes: