05121+5220
- Unique Name: 05121+5220ES 709AB
- RA: 05 12 10.22
- Dec: +52 22 00.0
- Discoverer: ES
- Discoverer Number: 709
- Components: AB
- First year: 1909
- Last year: 1991
- Observations: 5
- First position angle: 228
- Last position angle: 230
- First separation: 1.9
- Last separation: 1.9
- Mag first component: 10.2
- Mag second component: 10.51
- Spectral type:
- Primary proper motion RA: 1
- Primary proper motion DEC: -22
- Secondary proper motion RA: 1
- Secondary proper motion DEC: -22
- Durchmusterung: +52 933
- Notes: