21549-7720
- Unique Name: 21549-7720HDS3117AB
- RA: 21 54 51.31
- Dec: -77 20 16.8
- Discoverer: HDS
- Discoverer Number: 3117
- Components: AB
- First year: 1991
- Last year: 1991
- Observations: 2
- First position angle: 118
- Last position angle: 119
- First separation: 2.1
- Last separation: 2.1
- Mag first component: 8.4
- Mag second component: 12.5
- Spectral type: K3IV
- Primary proper motion RA: 229
- Primary proper motion DEC: -189
- Secondary proper motion RA: 224
- Secondary proper motion DEC: -186
- Durchmusterung: -77 1522
- Notes: