20423+4549
- Unique Name: 20423+4549BKO 158EF
- RA: 20 42 24.92
- Dec: +45 48 44.2
- Discoverer: BKO
- Discoverer Number: 158
- Components: EF
- First year: 1998
- Last year: 2012
- Observations: 5
- First position angle: 281
- Last position angle: 281
- First separation: 24.8
- Last separation: 25.0
- Mag first component: 10.55
- Mag second component: 12.2
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -2
- Secondary proper motion RA: -9
- Secondary proper motion DEC: 2
- Durchmusterung:
- Notes: N
