20542-2730
- Unique Name: 20542-2730B 509AB
- RA: 20 54 09.69
- Dec: -27 29 53.4
- Discoverer: B
- Discoverer Number: 509
- Components: AB
- First year: 1927
- Last year: 1999
- Observations: 4
- First position angle: 108
- Last position angle: 126
- First separation: 3.9
- Last separation: 7.9
- Mag first component: 10.72
- Mag second component: 15.2
- Spectral type: F7V
- Primary proper motion RA: -29
- Primary proper motion DEC: -9
- Secondary proper motion RA: 37
- Secondary proper motion DEC: -31
- Durchmusterung: -2715110
- Notes: N
