20559+3922
- Unique Name: 20559+3922MLB 957
- RA: 20 55 54.05
- Dec: +39 21 59.1
- Discoverer: MLB
- Discoverer Number: 957
- Components:
- First year: 1934
- Last year: 2000
- Observations: 2
- First position angle: 128
- Last position angle: 134
- First separation: 2.3
- Last separation: 2.8
- Mag first component: 11.5
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: 5
- Primary proper motion DEC: -19
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: