21156+3315
- Unique Name: 21156+3315TOB 216
- RA: 21 15 35.07
- Dec: +33 15 23.0
- Discoverer: TOB
- Discoverer Number: 216
- Components:
- First year: 1983
- Last year: 2002
- Observations: 3
- First position angle: 136
- Last position angle: 136
- First separation: 14.2
- Last separation: 14.1
- Mag first component: 10.5
- Mag second component: 13.2
- Spectral type:
- Primary proper motion RA: -7
- Primary proper motion DEC: -11
- Secondary proper motion RA: 109
- Secondary proper motion DEC: -83
- Durchmusterung:
- Notes: