21156+3512
- Unique Name: 21156+3512TDT2863
- RA: 21 15 33.82
- Dec: +35 11 54.0
- Discoverer: TDT
- Discoverer Number: 2863
- Components:
- First year: 1991
- Last year: 1991
- Observations: 1
- First position angle: 205
- Last position angle: 205
- First separation: 2.5
- Last separation: 2.5
- Mag first component: 11.69
- Mag second component: 12.76
- Spectral type:
- Primary proper motion RA: -1
- Primary proper motion DEC: 6
- Secondary proper motion RA: -1
- Secondary proper motion DEC: 6
- Durchmusterung:
- Notes: