18521+5120
- Unique Name: 18521+5120STF2416AB
- RA: 18 52 08.85
- Dec: +51 19 42.8
- Discoverer: STF
- Discoverer Number: 2416
- Components: AB
- First year: 1830
- Last year: 2010
- Observations: 19
- First position angle: 157
- Last position angle: 158
- First separation: 15.6
- Last separation: 19.9
- Mag first component: 8.67
- Mag second component: 11.17
- Spectral type: G0
- Primary proper motion RA: -1
- Primary proper motion DEC: 10
- Secondary proper motion RA: 3
- Secondary proper motion DEC: -12
- Durchmusterung: +51 2444
- Notes: L
