21107-1729
- Unique Name: 21107-1729HDS3017
- RA: 21 10 43.78
- Dec: -17 28 32.6
- Discoverer: HDS
- Discoverer Number: 3017
- Components:
- First year: 1916
- Last year: 1999
- Observations: 6
- First position angle: 284
- Last position angle: 295
- First separation: 22.6
- Last separation: 21.2
- Mag first component: 8.95
- Mag second component: 12.51
- Spectral type: F3V
- Primary proper motion RA: -28
- Primary proper motion DEC: -49
- Secondary proper motion RA: -32
- Secondary proper motion DEC: -52
- Durchmusterung: -18 5878
- Notes: