20139+2942
- Unique Name: 20139+2942TOB 180
- RA: 20 13 51.07
- Dec: +29 42 17.7
- Discoverer: TOB
- Discoverer Number: 180
- Components:
- First year: 1894
- Last year: 2002
- Observations: 5
- First position angle: 300
- Last position angle: 300
- First separation: 23.2
- Last separation: 23.4
- Mag first component: 9.8
- Mag second component: 12.4
- Spectral type: B5
- Primary proper motion RA: 1
- Primary proper motion DEC: -1
- Secondary proper motion RA: -3
- Secondary proper motion DEC: -1
- Durchmusterung:
- Notes: