20166+0405
- Unique Name: 20166+0405J 1641
- RA: 20 16 33.12
- Dec: +04 06 04.1
- Discoverer: J
- Discoverer Number: 1641
- Components:
- First year: 1910
- Last year: 2002
- Observations: 7
- First position angle: 214
- Last position angle: 216
- First separation: 7.3
- Last separation: 7.2
- Mag first component: 10.15
- Mag second component: 10.7
- Spectral type:
- Primary proper motion RA: -20
- Primary proper motion DEC: -19
- Secondary proper motion RA: -20
- Secondary proper motion DEC: -19
- Durchmusterung: +03 4305
- Notes: N
