20556+3901
- Unique Name: 20556+3901HJ 1596
- RA: 20 55 37.40
- Dec: +39 01 16.4
- Discoverer: HJ
- Discoverer Number: 1596
- Components:
- First year: 1895
- Last year: 2008
- Observations: 12
- First position angle: 295
- Last position angle: 295
- First separation: 16.7
- Last separation: 18.2
- Mag first component: 9.28
- Mag second component: 10.97
- Spectral type: F5
- Primary proper motion RA: 11
- Primary proper motion DEC: -13
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -3
- Durchmusterung: +38 4283
- Notes: