21111+3618
- Unique Name: 21111+3618HO 283Aa,Ab
- RA: 21 11 03.77
- Dec: +36 17 58.5
- Discoverer: HO
- Discoverer Number: 283
- Components: Aa,Ab
- First year: 1884
- Last year: 1884
- Observations: 1
- First position angle: 178
- Last position angle: 178
- First separation: 0.8
- Last separation: 0.8
- Mag first component: 6.54
- Mag second component: 12.0
- Spectral type: B1Vp
- Primary proper motion RA: 1
- Primary proper motion DEC: 2
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung: +35 4426
- Notes: N
