20124+3804
- Unique Name: 20124+3804SEI1000
- RA: 20 12 23.20
- Dec: +38 03 50.3
- Discoverer: SEI
- Discoverer Number: 1000
- Components:
- First year: 1896
- Last year: 2010
- Observations: 8
- First position angle: 150
- Last position angle: 145
- First separation: 19.3
- Last separation: 19.1
- Mag first component: 9.72
- Mag second component: 11.4
- Spectral type: B2III:
- Primary proper motion RA: -4
- Primary proper motion DEC: -6
- Secondary proper motion RA: 3
- Secondary proper motion DEC: 1
- Durchmusterung: +37 3825
- Notes: