20123+4505
- Unique Name: 20123+4505ES 1268
- RA: 20 12 16.26
- Dec: +45 05 18.8
- Discoverer: ES
- Discoverer Number: 1268
- Components:
- First year: 1892
- Last year: 2003
- Observations: 5
- First position angle: 156
- Last position angle: 151
- First separation: 8.1
- Last separation: 8.2
- Mag first component: 9.47
- Mag second component: 11.7
- Spectral type: B9
- Primary proper motion RA: 2
- Primary proper motion DEC: 0
- Secondary proper motion RA: 9
- Secondary proper motion DEC: 0
- Durchmusterung: +44 3379
- Notes: