20423+4549
- Unique Name: 20423+4549BKO 158AF
- RA: 20 42 20.31
- Dec: +45 49 24.5
- Discoverer: BKO
- Discoverer Number: 158
- Components: AF
- First year: 1998
- Last year: 2012
- Observations: 5
- First position angle: 146
- Last position angle: 144
- First separation: 42.9
- Last separation: 41.0
- Mag first component: 7.66
- Mag second component: 12.2
- Spectral type:
- Primary proper motion RA: -56
- Primary proper motion DEC: -189
- Secondary proper motion RA: -9
- Secondary proper motion DEC: 2
- Durchmusterung:
- Notes: N
