21105+4300
- Unique Name: 21105+4300VKI 39
- RA: 21 10 29.49
- Dec: +43 00 28.3
- Discoverer: VKI
- Discoverer Number: 39
- Components:
- First year: 1977
- Last year: 2007
- Observations: 2
- First position angle: 224
- Last position angle: 234
- First separation: 0.7
- Last separation: 1.3
- Mag first component: 12.2
- Mag second component: 12.2
- Spectral type:
- Primary proper motion RA: 15
- Primary proper motion DEC: -19
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: