19431+2318
- Unique Name: 19431+2318J 490AB
- RA: 19 43 08.87
- Dec: +23 18 08.2
- Discoverer: J
- Discoverer Number: 490
- Components: AB
- First year: 1911
- Last year: 2008
- Observations: 4
- First position angle: 107
- Last position angle: 119
- First separation: 3.0
- Last separation: 5.4
- Mag first component: 8.79
- Mag second component: 12.2
- Spectral type: O7
- Primary proper motion RA: -7
- Primary proper motion DEC: -6
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +22 3782
- Notes:
