20542-2730
- Unique Name: 20542-2730B 509AC
- RA: 20 54 09.69
- Dec: -27 29 53.4
- Discoverer: B
- Discoverer Number: 509
- Components: AC
- First year: 1913
- Last year: 1999
- Observations: 5
- First position angle: 356
- Last position angle: 69
- First separation: 6.0
- Last separation: 2.5
- Mag first component: 10.72
- Mag second component: 11.21
- Spectral type: F7V
- Primary proper motion RA: -29
- Primary proper motion DEC: -9
- Secondary proper motion RA: 45
- Secondary proper motion DEC: 10
- Durchmusterung:
- Notes: N
