21215+5434
- Unique Name: 21215+5434ROE 91AD
- RA: 21 21 29.91
- Dec: +54 33 27.8
- Discoverer: ROE
- Discoverer Number: 91
- Components: AD
- First year: 1915
- Last year: 2003
- Observations: 3
- First position angle: 275
- Last position angle: 275
- First separation: 72.7
- Last separation: 74.7
- Mag first component: 11.9
- Mag second component: 12.3
- Spectral type:
- Primary proper motion RA: -4
- Primary proper motion DEC: -20
- Secondary proper motion RA: 1
- Secondary proper motion DEC: 7
- Durchmusterung:
- Notes: