20423+2837
- Unique Name: 20423+2837HJ 1561
- RA: 20 42 20.81
- Dec: +28 38 11.8
- Discoverer: HJ
- Discoverer Number: 1561
- Components:
- First year: 1828
- Last year: 2011
- Observations: 9
- First position angle: 273
- Last position angle: 275
- First separation: 4.5
- Last separation: 9.4
- Mag first component: 10.11
- Mag second component: 11.16
- Spectral type: G5
- Primary proper motion RA: 34
- Primary proper motion DEC: -15
- Secondary proper motion RA: 33
- Secondary proper motion DEC: -15
- Durchmusterung: +28 3857
- Notes: D
