21104+3215
- Unique Name: 21104+3215TOB 212AC
- RA: 21 10 27.03
- Dec: +32 15 28.2
- Discoverer: TOB
- Discoverer Number: 212
- Components: AC
- First year: 1983
- Last year: 2012
- Observations: 4
- First position angle: 83
- Last position angle: 79
- First separation: 23.1
- Last separation: 24.1
- Mag first component: 9.34
- Mag second component: 12.3
- Spectral type: G5
- Primary proper motion RA: 3
- Primary proper motion DEC: -3
- Secondary proper motion RA: 36
- Secondary proper motion DEC: 39
- Durchmusterung:
- Notes: