21086+3942
- Unique Name: 21086+3942ALI1154
- RA: 21 08 31.92
- Dec: +39 42 18.8
- Discoverer: ALI
- Discoverer Number: 1154
- Components:
- First year: 1892
- Last year: 2002
- Observations: 5
- First position angle: 252
- Last position angle: 252
- First separation: 13.3
- Last separation: 12.5
- Mag first component: 11.56
- Mag second component: 11.89
- Spectral type:
- Primary proper motion RA: 0
- Primary proper motion DEC: 0
- Secondary proper motion RA: 8
- Secondary proper motion DEC: 2
- Durchmusterung:
- Notes: