18309+3840
- Unique Name: 18309+3840STF2338AC
- RA: 18 30 54.75
- Dec: +38 39 33.8
- Discoverer: STF
- Discoverer Number: 2338
- Components: AC
- First year: 1863
- Last year: 2013
- Observations: 19
- First position angle: 209
- Last position angle: 206
- First separation: 77.4
- Last separation: 76.4
- Mag first component: 9.3
- Mag second component: 9.62
- Spectral type: K2
- Primary proper motion RA: -11
- Primary proper motion DEC: -7
- Secondary proper motion RA: 2
- Secondary proper motion DEC: -7
- Durchmusterung:
- Notes: N
