12166+4058
- Unique Name: 12166+4058FMR 103
- RA: 12 16 36.93
- Dec: +40 57 36.2
- Discoverer: FMR
- Discoverer Number: 103
- Components:
- First year: 1998
- Last year: 2003
- Observations: 2
- First position angle: 164
- Last position angle: 165
- First separation: 29.6
- Last separation: 29.5
- Mag first component: 18.6
- Mag second component: 18.7
- Spectral type: K8VI+M4V
- Primary proper motion RA: -185
- Primary proper motion DEC: -84
- Secondary proper motion RA: -185
- Secondary proper motion DEC: -84
- Durchmusterung:
- Notes: V