17121+2114
- Unique Name: 17121+2114STF2135AB
- RA: 17 12 06.06
- Dec: +21 13 44.4
- Discoverer: STF
- Discoverer Number: 2135
- Components: AB
- First year: 1829
- Last year: 2012
- Observations: 155
- First position angle: 166
- Last position angle: 194
- First separation: 6.7
- Last separation: 8.5
- Mag first component: 7.59
- Mag second component: 8.88
- Spectral type: K0
- Primary proper motion RA: 22
- Primary proper motion DEC: 2
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -11
- Durchmusterung: +21 3063
- Notes: LD
