21107-3959
- Unique Name: 21107-3959HDS3018
- RA: 21 10 44.77
- Dec: -39 58 30.5
- Discoverer: HDS
- Discoverer Number: 3018
- Components:
- First year: 1991
- Last year: 1991
- Observations: 2
- First position angle: 188
- Last position angle: 189
- First separation: 0.8
- Last separation: 0.8
- Mag first component: 7.89
- Mag second component: 11.59
- Spectral type: G8III
- Primary proper motion RA: 12
- Primary proper motion DEC: -38
- Secondary proper motion RA: 12
- Secondary proper motion DEC: -39
- Durchmusterung: -4014203
- Notes: