20423+4549
- Unique Name: 20423+4549STT 411AB
- RA: 20 42 20.31
- Dec: +45 49 24.5
- Discoverer: STT
- Discoverer Number: 411
- Components: AB
- First year: 1845
- Last year: 2012
- Observations: 37
- First position angle: 273
- Last position angle: 349
- First separation: 15.2
- Last separation: 31.5
- Mag first component: 7.66
- Mag second component: 10.58
- Spectral type: G2V
- Primary proper motion RA: -56
- Primary proper motion DEC: -189
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -9
- Durchmusterung: +45 3245
- Notes: NL
