18509+4259
- Unique Name: 18509+4259BRT1922
- RA: 18 50 57.08
- Dec: +42 58 54.3
- Discoverer: BRT
- Discoverer Number: 1922
- Components:
- First year: 1936
- Last year: 2006
- Observations: 7
- First position angle: 297
- Last position angle: 294
- First separation: 3.0
- Last separation: 3.4
- Mag first component: 11.29
- Mag second component: 11.85
- Spectral type:
- Primary proper motion RA: 10
- Primary proper motion DEC: -13
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: