20423+5723
- Unique Name: 20423+5723BU 152
- RA: 20 42 16.81
- Dec: +57 23 07.4
- Discoverer: BU
- Discoverer Number: 152
- Components:
- First year: 1873
- Last year: 2011
- Observations: 68
- First position angle: 130
- Last position angle: 83
- First separation: 0.4
- Last separation: 1.1
- Mag first component: 7.21
- Mag second component: 8.8
- Spectral type: A4IV
- Primary proper motion RA: -6
- Primary proper motion DEC: 5
- Secondary proper motion RA: -6
- Secondary proper motion DEC: 5
- Durchmusterung: +56 2474
- Notes: D
