21102+3844
- Unique Name: 21102+3844SEI1426
- RA: 21 10 14.39
- Dec: +38 44 10.5
- Discoverer: SEI
- Discoverer Number: 1426
- Components:
- First year: 1895
- Last year: 2002
- Observations: 6
- First position angle: 15
- Last position angle: 20
- First separation: 17.0
- Last separation: 17.6
- Mag first component: 10.23
- Mag second component: 11.96
- Spectral type:
- Primary proper motion RA: -11
- Primary proper motion DEC: -8
- Secondary proper motion RA: -1
- Secondary proper motion DEC: -9
- Durchmusterung: +38 4368
- Notes: