05139-2259
- Unique Name: 05139-2259BU 317AB
- RA: 05 13 55.82
- Dec: -22 59 18.6
- Discoverer: BU
- Discoverer Number: 317
- Components: AB
- First year: 1874
- Last year: 2000
- Observations: 18
- First position angle: 15
- Last position angle: 13
- First separation: 5.0
- Last separation: 8.6
- Mag first component: 7.54
- Mag second component: 10.27
- Spectral type: K0III
- Primary proper motion RA: 11
- Primary proper motion DEC: 23
- Secondary proper motion RA: 11
- Secondary proper motion DEC: 23
- Durchmusterung: -23 2539
- Notes: