20579+2940
- Unique Name: 20579+2940MLB 573AB
- RA: 20 57 55.29
- Dec: +29 40 27.6
- Discoverer: MLB
- Discoverer Number: 573
- Components: AB
- First year: 1894
- Last year: 2007
- Observations: 9
- First position angle: 234
- Last position angle: 236
- First separation: 5.1
- Last separation: 5.7
- Mag first component: 10.2
- Mag second component: 10.3
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -1
- Secondary proper motion RA: 0
- Secondary proper motion DEC: -6
- Durchmusterung:
- Notes: