20173+3420
- Unique Name: 20173+3420SEI1064
- RA: 20 17 16.15
- Dec: +34 20 08.0
- Discoverer: SEI
- Discoverer Number: 1064
- Components:
- First year: 1893
- Last year: 2011
- Observations: 11
- First position angle: 253
- Last position angle: 254
- First separation: 23.8
- Last separation: 23.8
- Mag first component: 10.16
- Mag second component: 10.67
- Spectral type: A0
- Primary proper motion RA: -1
- Primary proper motion DEC: -6
- Secondary proper motion RA: -2
- Secondary proper motion DEC: -4
- Durchmusterung: +33 3840
- Notes: N
