15121+1859
- Unique Name: 15121+1859COU 189
- RA: 15 12 04.27
- Dec: +18 58 33.7
- Discoverer: COU
- Discoverer Number: 189
- Components:
- First year: 1967
- Last year: 2008
- Observations: 71
- First position angle: 141
- Last position angle: 140
- First separation: 0.4
- Last separation: 0.4
- Mag first component: 6.16
- Mag second component: 8.94
- Spectral type: M4IIIab
- Primary proper motion RA: -14
- Primary proper motion DEC: 10
- Secondary proper motion RA: -14
- Secondary proper motion DEC: 10
- Durchmusterung: +19 2935
- Notes: N
