21105+4742
- Unique Name: 21105+4742LV 23AE
- RA: 21 10 30.96
- Dec: +47 41 32.0
- Discoverer: LV
- Discoverer Number: 23
- Components: AE
- First year: 2003
- Last year: 2003
- Observations: 1
- First position angle: 338
- Last position angle: 338
- First separation: 47.2
- Last separation: 47.2
- Mag first component: 6.55
- Mag second component: 13.5
- Spectral type: B6IV
- Primary proper motion RA: -4
- Primary proper motion DEC: -4
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: N
