20305+3454
- Unique Name: 20305+3454ES 2304
- RA: 20 30 27.80
- Dec: +34 54 16.9
- Discoverer: ES
- Discoverer Number: 2304
- Components:
- First year: 1927
- Last year: 2011
- Observations: 2
- First position angle: 46
- Last position angle: 47
- First separation: 3.2
- Last separation: 3.7
- Mag first component: 10.11
- Mag second component: 13.9
- Spectral type: A5
- Primary proper motion RA: -2
- Primary proper motion DEC: -2
- Secondary proper motion RA: 159
- Secondary proper motion DEC: 200
- Durchmusterung: +34 4052
- Notes: U
