21140+3755
- Unique Name: 21140+3755SEI1457
- RA: 21 13 59.80
- Dec: +37 54 34.5
- Discoverer: SEI
- Discoverer Number: 1457
- Components:
- First year: 1895
- Last year: 2012
- Observations: 9
- First position angle: 27
- Last position angle: 28
- First separation: 10.4
- Last separation: 10.6
- Mag first component: 11.35
- Mag second component: 11.36
- Spectral type:
- Primary proper motion RA: -9
- Primary proper motion DEC: -8
- Secondary proper motion RA: -5
- Secondary proper motion DEC: -8
- Durchmusterung:
- Notes: N
