20424+3405
- Unique Name: 20424+3405ES 2309
- RA: 20 42 21.81
- Dec: +34 05 05.2
- Discoverer: ES
- Discoverer Number: 2309
- Components:
- First year: 1927
- Last year: 1927
- Observations: 1
- First position angle: 162
- Last position angle: 162
- First separation: 4.6
- Last separation: 4.6
- Mag first component: 10.28
- Mag second component: 12.1
- Spectral type: F2
- Primary proper motion RA: 20
- Primary proper motion DEC: -8
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +33 3995
- Notes: