21221-5121
- Unique Name: 21221-5121LDS 739
- RA: 21 22 08.48
- Dec: -51 21 17.9
- Discoverer: LDS
- Discoverer Number: 739
- Components:
- First year: 1920
- Last year: 2010
- Observations: 6
- First position angle: 315
- Last position angle: 286
- First separation: 45.0
- Last separation: 44.1
- Mag first component: 9.89
- Mag second component: 14.47
- Spectral type: K0
- Primary proper motion RA: 207
- Primary proper motion DEC: -104
- Secondary proper motion RA: 215
- Secondary proper motion DEC: -107
- Durchmusterung: -5112912
- Notes: V