21108+4249
- Unique Name: 21108+4249VKI 40
- RA: 21 10 45.49
- Dec: +42 48 54.5
- Discoverer: VKI
- Discoverer Number: 40
- Components:
- First year: 1977
- Last year: 2002
- Observations: 4
- First position angle: 258
- Last position angle: 256
- First separation: 3.7
- Last separation: 3.7
- Mag first component: 12.36
- Mag second component: 13.1
- Spectral type:
- Primary proper motion RA: 6
- Primary proper motion DEC: -4
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: