21191+3954
- Unique Name: 21191+3954SEI1502
- RA: 21 19 08.42
- Dec: +39 54 46.5
- Discoverer: SEI
- Discoverer Number: 1502
- Components:
- First year: 1895
- Last year: 2002
- Observations: 4
- First position angle: 283
- Last position angle: 275
- First separation: 12.8
- Last separation: 13.0
- Mag first component: 11.8
- Mag second component: 12.0
- Spectral type:
- Primary proper motion RA: -6
- Primary proper motion DEC: -2
- Secondary proper motion RA: -8
- Secondary proper motion DEC: -18
- Durchmusterung:
- Notes: N
