21155+3719
- Unique Name: 21155+3719SEI1478AC
- RA: 21 15 30.24
- Dec: +37 19 19.7
- Discoverer: SEI
- Discoverer Number: 1478
- Components: AC
- First year: 1896
- Last year: 2002
- Observations: 3
- First position angle: 222
- Last position angle: 217
- First separation: 11.9
- Last separation: 9.9
- Mag first component: 10.74
- Mag second component: 12.4
- Spectral type:
- Primary proper motion RA: -22
- Primary proper motion DEC: -14
- Secondary proper motion RA: 0
- Secondary proper motion DEC: 1
- Durchmusterung:
- Notes:
