20423+4549
- Unique Name: 20423+4549CTT 15BD
- RA: 20 42 19.66
- Dec: +45 49 53.1
- Discoverer: CTT
- Discoverer Number: 15
- Components: BD
- First year: 1892
- Last year: 2008
- Observations: 8
- First position angle: 179
- Last position angle: 178
- First separation: 88.5
- Last separation: 86.7
- Mag first component: 10.58
- Mag second component: 10.6
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: -9
- Secondary proper motion RA: 4
- Secondary proper motion DEC: 7
- Durchmusterung:
- Notes: N
